Generate -+5V from 12V

"Jon Kirwan" <jonk@infinitefactors.org> wrote in message
news:4rto259suuhdlli829hiea54d72o8im8lu@4ax.com...
On Sun, 7 Jun 2009 19:14:46 -0700, "BobW"
nimby_GIMME_SOME_SPAM@roadrunner.com> wrote:

snip of ltspice asc and pdf

Thanks, Bob. I got both postings just fine. Apparently, Verizon lets
through binaries on non-alt.* groups they support. Perhaps giganews
blocks binaries on groups marked as text? If so, that's yet another
consideration when I'm out looking for a service to pay for.

Things sure have evolved on internet.

Jon
Click to expand...
Hmmm...you must be right because I can't see my own binary post.

By the way, the internet didn't evolve - it was created by god.
(Forgive me. I couldn't resist. My apologies to RogerN).

Bob
--
== All google group posts are automatically deleted due to spam ==
 
On Mon, 08 Jun 2009 02:32:32 GMT, Jon Kirwan
<jonk@infinitefactors.org> wrote:

On Sun, 7 Jun 2009 19:14:46 -0700, "BobW"
nimby_GIMME_SOME_SPAM@roadrunner.com> wrote:

snip of ltspice asc and pdf

Thanks, Bob. I got both postings just fine. Apparently, Verizon lets
through binaries on non-alt.* groups they support. Perhaps giganews
blocks binaries on groups marked as text? If so, that's yet another
consideration when I'm out looking for a service to pay for.

Things sure have evolved on internet.

Jon
Click to expand...
Okay. I just ran a .op and a .trans on it, using venerable 2n2222 and
2n2907 to set the 6V mid-point. I'm not sure how they stack up with
the 1N914's and I'm uncomfortable with the choice. The -rail isn't
correct either on the .op or the .trans.

I'm thinking about that pair of diodes and replacing them with an
adjustable BJT diode-thingy. Something like:

|
,---+
| |
\ |
/ |
\ |
/ |
| |
| /c
+-|
| >e
| |
\ |
/ |
\ |
/ |
| |
'---+
|

Do R8 and R7 need to be sized so that they greatly exceed the 26mV of
the BJT emitter resistor by 20X or 30X to yield better sharing?

Jon
 
"Jon Kirwan" <jonk@infinitefactors.org> wrote in message
news:f8uo251f7cbpl2a81gui1odj45n5glqjr5@4ax.com...
On Mon, 08 Jun 2009 02:32:32 GMT, Jon Kirwan
jonk@infinitefactors.org> wrote:

On Sun, 7 Jun 2009 19:14:46 -0700, "BobW"
nimby_GIMME_SOME_SPAM@roadrunner.com> wrote:

snip of ltspice asc and pdf

Thanks, Bob. I got both postings just fine. Apparently, Verizon lets
through binaries on non-alt.* groups they support. Perhaps giganews
blocks binaries on groups marked as text? If so, that's yet another
consideration when I'm out looking for a service to pay for.

Things sure have evolved on internet.

Jon

Okay. I just ran a .op and a .trans on it, using venerable 2n2222 and
2n2907 to set the 6V mid-point. I'm not sure how they stack up with
the 1N914's and I'm uncomfortable with the choice. The -rail isn't
correct either on the .op or the .trans.

I'm thinking about that pair of diodes and replacing them with an
adjustable BJT diode-thingy. Something like:

|
,---+
| |
\ |
/ |
\ |
/ |
| |
| /c
+-|
| >e
| |
\ |
/ |
\ |
/ |
| |
'---+
|

Do R8 and R7 need to be sized so that they greatly exceed the 26mV of
the BJT emitter resistor by 20X or 30X to yield better sharing?

Jon
Click to expand...
I didn't set up or run transient response. I was just interested in the
operating points.

I'm not sure what you mean by "The -rail isn't correct either on the .op or
the .trans..." Is it not working a modification to the original circuit, or
is the original not working (it was, for sure)?

R7 and R8 aren't there to perform any type of current sharing. They're there
to keep the two transistors from drawing too much current by themselves.
They might need to be a little larger under worst case (temperature)
conditions. Ideally, the two transistors should be run Class B, and just on
the edge of AB.


Bob
--
== All google group posts are automatically deleted due to spam ==
 
Jon Kirwan wrote:
On Sun, 7 Jun 2009 17:10:26 -0700, "BobW"
nimby_GIMME_SOME_SPAM@roadrunner.com> wrote:


"vic" <news@bidouille.org> wrote in message
news:4a291f7d$0$696$426a74cc@news.free.fr...
Hi,

I need to generate a symmetric +/-5V supply from a single +12V supply. I
need about 150mA from the +5V side, and less than 50mA from the -5V side.

I've thought about using two 7805 in the following configuration :


Supply + ----+--------[7805]---- +5 V
| |
`-[7805]----+------ 0v
|
Supply - ---------+------------- -5V


does it make sense ? Would it be OK for the 7805 to sink current instead
of sourcing current, in the case of the 7805 in charge of the 0V supply ?

If this idea is garbage, what would be the recommended solution to this
problem ?

Thanks.

See alt.binaries.schematics.electronic for a (linear) circuit that will work
up to about 200mA on each supply with a minimum input voltage of 10.6V.

Sadly, Verizon (and other major service providers) have completely
eliminated all alt.* groups from their servers. This affects me, as
well. It may yet force me to get an extra-cost service added.
Click to expand...

I know I've posted this link at least a dozen times. It is a read
only portal for selected binaries newsgroups.

http://www.usenet-replayer.com/


--
You can't have a sense of humor, if you have no sense!
 
BobW wrote:

"vic" <news@bidouille.org> wrote in message
news:4a291f7d$0$696$426a74cc@news.free.fr...
Hi,

I need to generate a symmetric +/-5V supply from a single +12V
supply. I need about 150mA from the +5V side, and less than 50mA from
the -5V side.

I've thought about using two 7805 in the following configuration :


Supply + ----+--------[7805]---- +5 V
| |
`-[7805]----+------ 0v
|
Supply - ---------+------------- -5V


does it make sense ? Would it be OK for the 7805 to sink current
instead of sourcing current, in the case of the 7805 in charge of the
0V supply ?

If this idea is garbage, what would be the recommended solution to
this problem ?

Thanks.

See alt.binaries.schematics.electronic for a (linear) circuit that
will work up to about 200mA on each supply with a minimum input
voltage of 10.6V.

Bob
Click to expand...
Unfortunately most if not all "Free" news servers don't carry binary
groups. Also I wont pay to suffer all the spam and other rubbish that
comes along with with it !

--
Best Regards:
Baron.
 
BobW wrote:

"Jon Kirwan" <jonk@infinitefactors.org> wrote in message
news:trro25hqg7j3brjra016rfpi8f2kli1g1v@4ax.com...
On Sun, 7 Jun 2009 17:10:26 -0700, "BobW"
nimby_GIMME_SOME_SPAM@roadrunner.com> wrote:


"vic" <news@bidouille.org> wrote in message
news:4a291f7d$0$696$426a74cc@news.free.fr...
Hi,

I need to generate a symmetric +/-5V supply from a single +12V
supply. I need about 150mA from the +5V side, and less than 50mA
from the -5V side.

I've thought about using two 7805 in the following configuration :


Supply + ----+--------[7805]---- +5 V
| |
`-[7805]----+------ 0v
|
Supply - ---------+------------- -5V


does it make sense ? Would it be OK for the 7805 to sink current
instead of sourcing current, in the case of the 7805 in charge of
the 0V supply ?

If this idea is garbage, what would be the recommended solution to
this problem ?

Thanks.

See alt.binaries.schematics.electronic for a (linear) circuit that
will work
up to about 200mA on each supply with a minimum input voltage of
10.6V.

Sadly, Verizon (and other major service providers) have completely
eliminated all alt.* groups from their servers. This affects me, as
well. It may yet force me to get an extra-cost service added.

Jon

I just tried posting the attachments here, too, but it doesn't look
like they made it through.

Giganews' cheapest rate is a couple of bucks a month. I haven't had a
problem with them.

Here are the LTSpice .asc file guts if you're interested. In fact,
even if you're not interested, here they are -


Version 4
SHEET 1 920 680
WIRE -320 -192 -512 -192
WIRE -144 -192 -320 -192
WIRE 48 -192 -144 -192
WIRE 80 -192 48 -192
WIRE -512 -160 -512 -192
WIRE -320 -128 -320 -192
WIRE 480 -96 464 -96
WIRE 512 -96 480 -96
WIRE 672 -96 512 -96
WIRE 80 -80 80 -192
WIRE 144 -80 80 -80
WIRE 176 -80 144 -80
WIRE 48 -64 48 -192
WIRE -144 -48 -144 -192
WIRE 512 -48 512 -96
WIRE 480 -32 480 -96
WIRE 480 -32 464 -32
WIRE 672 -32 672 -96
WIRE 736 -32 672 -32
WIRE 832 -32 736 -32
WIRE 736 -16 736 -32
WIRE -320 0 -320 -48
WIRE -224 0 -320 0
WIRE -208 0 -224 0
WIRE 672 0 672 -32
WIRE 144 16 144 -80
WIRE 176 16 144 16
WIRE -320 32 -320 0
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WIRE 512 32 464 32
WIRE -80 48 -144 48
WIRE 48 48 48 0
WIRE 48 48 0 48
WIRE -320 96 -400 96
WIRE 48 96 48 48
WIRE 320 96 320 80
WIRE 320 96 48 96
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WIRE 832 96 752 96
WIRE 48 112 48 96
WIRE 672 112 672 96
WIRE 672 112 48 112
WIRE -320 128 -320 96
WIRE 48 128 48 112
WIRE 96 128 48 128
WIRE 672 128 672 112
WIRE 752 144 752 96
WIRE -80 176 -144 176
WIRE 48 176 48 128
WIRE 48 176 0 176
WIRE -320 224 -320 192
WIRE -224 224 -320 224
WIRE -208 224 -224 224
WIRE 176 240 144 240
WIRE 512 240 464 240
WIRE 672 240 672 208
WIRE 672 240 512 240
WIRE 752 240 752 208
WIRE 752 240 672 240
WIRE 832 240 752 240
WIRE 48 256 48 176
WIRE 512 256 512 240
WIRE -320 272 -320 224
WIRE 144 336 144 240
WIRE 176 336 144 336
WIRE 512 336 512 320
WIRE 512 336 464 336
WIRE 96 432 96 128
WIRE 320 432 320 400
WIRE 320 432 96 432
WIRE -512 448 -512 -80
WIRE -320 448 -320 352
WIRE -320 448 -512 448
WIRE -144 448 -144 272
WIRE -144 448 -320 448
WIRE 48 448 48 320
WIRE 48 448 -144 448
WIRE 144 448 144 336
WIRE 144 448 48 448
WIRE -512 464 -512 448
FLAG -512 464 0
FLAG 832 -32 +Vout
FLAG 832 240 -Vout
FLAG 832 96 0Vout
FLAG -224 0 VD+
FLAG -224 224 VD-
FLAG -400 96 VDM
SYMBOL res 688 96 R180
WINDOW 0 36 76 Left 0
WINDOW 3 36 40 Left 0
SYMATTR InstName R3
SYMATTR Value 30
SYMBOL res 688 224 R180
WINDOW 0 36 76 Left 0
WINDOW 3 36 40 Left 0
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SYMATTR Value 100
SYMBOL voltage -512 -176 R0
WINDOW 123 0 0 Left 0
WINDOW 39 3 132 Left 0
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL diode -336 32 R0
WINDOW 3 45 31 Left 0
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SYMATTR Value 1N914
SYMBOL diode -336 128 R0
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SYMATTR Value 1N914
SYMBOL pnp -208 272 M180
WINDOW 0 61 55 Left 0
WINDOW 3 62 23 Left 0
SYMATTR InstName Q3
SYMBOL npn -208 -48 R0
SYMATTR InstName Q4
SYMBOL res -336 -144 R0
SYMATTR InstName R5
SYMATTR Value 47
SYMATTR SpiceLine pwr=1
SYMBOL res -336 256 R0
SYMATTR InstName R6
SYMATTR Value 47
SYMATTR SpiceLine pwr=1
SYMBOL res 16 32 R90
WINDOW 0 59 58 VBottom 0
WINDOW 3 57 55 VTop 0
SYMATTR InstName R7
SYMATTR Value 0.1
SYMBOL res 16 160 R90
WINDOW 0 63 53 VBottom 0
WINDOW 3 56 51 VTop 0
SYMATTR InstName R8
SYMATTR Value 0.1
SYMBOL PowerProducts\\LT1964-5 320 288 R0
SYMATTR InstName U1
SYMBOL cap 496 256 R0
SYMATTR InstName C1
SYMATTR Value 0.1ľ
SYMBOL PowerProducts\\LT1962-5 320 -32 R0
SYMATTR InstName U2
SYMBOL cap 496 -48 R0
SYMATTR InstName C2
SYMATTR Value 0.1ľ
SYMBOL cap 32 256 R0
WINDOW 0 -38 9 Left 0
WINDOW 3 -47 59 Left 0
SYMATTR InstName C3
SYMATTR Value 100ľ
SYMBOL cap 32 -64 R0
WINDOW 0 -41 4 Left 0
WINDOW 3 -53 58 Left 0
SYMATTR InstName C4
SYMATTR Value 100ľ
SYMBOL cap 720 -16 R0
SYMATTR InstName C5
SYMATTR Value 100ľ
SYMBOL cap 736 144 R0
SYMATTR InstName C6
SYMATTR Value 100ľ
TEXT 144 -208 Left 0 !.op

Bob
Click to expand...
Thankyou Bob. Thats very useful !

--
Best Regards:
Baron.
 
On Mon, 08 Jun 2009 00:11:45 -0400, "Michael A. Terrell"
<mike.terrell@earthlink.net> wrote:

Jon Kirwan wrote:

On Sun, 7 Jun 2009 17:10:26 -0700, "BobW"
nimby_GIMME_SOME_SPAM@roadrunner.com> wrote:


"vic" <news@bidouille.org> wrote in message
news:4a291f7d$0$696$426a74cc@news.free.fr...
Hi,

I need to generate a symmetric +/-5V supply from a single +12V supply. I
need about 150mA from the +5V side, and less than 50mA from the -5V side.

I've thought about using two 7805 in the following configuration :


Supply + ----+--------[7805]---- +5 V
| |
`-[7805]----+------ 0v
|
Supply - ---------+------------- -5V


does it make sense ? Would it be OK for the 7805 to sink current instead
of sourcing current, in the case of the 7805 in charge of the 0V supply ?

If this idea is garbage, what would be the recommended solution to this
problem ?

Thanks.

See alt.binaries.schematics.electronic for a (linear) circuit that will work
up to about 200mA on each supply with a minimum input voltage of 10.6V.

Sadly, Verizon (and other major service providers) have completely
eliminated all alt.* groups from their servers. This affects me, as
well. It may yet force me to get an extra-cost service added.

I know I've posted this link at least a dozen times. It is a read
only portal for selected binaries newsgroups.

http://www.usenet-replayer.com/
Click to expand...
First time it got my attention. I'll give it a shot.

Thanks,
Jon
 
On Mon, 08 Jun 2009 01:37:52 -0700, Jon Kirwan
<jonk@infinitefactors.org> wrote:

On Mon, 08 Jun 2009 00:11:45 -0400, "Michael A. Terrell"
mike.terrell@earthlink.net> wrote:

Jon Kirwan wrote:

On Sun, 7 Jun 2009 17:10:26 -0700, "BobW"
nimby_GIMME_SOME_SPAM@roadrunner.com> wrote:


"vic" <news@bidouille.org> wrote in message
news:4a291f7d$0$696$426a74cc@news.free.fr...
Hi,

I need to generate a symmetric +/-5V supply from a single +12V supply. I
need about 150mA from the +5V side, and less than 50mA from the -5V side.

I've thought about using two 7805 in the following configuration :


Supply + ----+--------[7805]---- +5 V
| |
`-[7805]----+------ 0v
|
Supply - ---------+------------- -5V


does it make sense ? Would it be OK for the 7805 to sink current instead
of sourcing current, in the case of the 7805 in charge of the 0V supply ?

If this idea is garbage, what would be the recommended solution to this
problem ?

Thanks.

See alt.binaries.schematics.electronic for a (linear) circuit that will work
up to about 200mA on each supply with a minimum input voltage of 10.6V.

Sadly, Verizon (and other major service providers) have completely
eliminated all alt.* groups from their servers. This affects me, as
well. It may yet force me to get an extra-cost service added.

I know I've posted this link at least a dozen times. It is a read
only portal for selected binaries newsgroups.

http://www.usenet-replayer.com/

First time it got my attention. I'll give it a shot.

Thanks,
Jon
Click to expand...
Okay. It got my attention long enough to register and check for the
group, alt.binaries.schematics.electronic. It doesn't appear on their
list. Besides, they don't support NNTP and would be quite difficult
to make use of, if I understand what this means.

In short, it doesn't look usable for this purpose because it doesn't
include the group. And it doesn't look usable, more generally,
because the mechanism (emailing every message, or every message of a
thread) isn't a means I would willingly choose.

Jon
 
Jon Kirwan wrote:
On Mon, 08 Jun 2009 01:37:52 -0700, Jon Kirwan
jonk@infinitefactors.org> wrote:

On Mon, 08 Jun 2009 00:11:45 -0400, "Michael A. Terrell"
mike.terrell@earthlink.net> wrote:

Jon Kirwan wrote:

On Sun, 7 Jun 2009 17:10:26 -0700, "BobW"
nimby_GIMME_SOME_SPAM@roadrunner.com> wrote:


"vic" <news@bidouille.org> wrote in message
news:4a291f7d$0$696$426a74cc@news.free.fr...
Hi,

I need to generate a symmetric +/-5V supply from a single +12V supply. I
need about 150mA from the +5V side, and less than 50mA from the -5V side.

I've thought about using two 7805 in the following configuration :


Supply + ----+--------[7805]---- +5 V
| |
`-[7805]----+------ 0v
|
Supply - ---------+------------- -5V


does it make sense ? Would it be OK for the 7805 to sink current instead
of sourcing current, in the case of the 7805 in charge of the 0V supply ?

If this idea is garbage, what would be the recommended solution to this
problem ?

Thanks.

See alt.binaries.schematics.electronic for a (linear) circuit that will work
up to about 200mA on each supply with a minimum input voltage of 10.6V.

Sadly, Verizon (and other major service providers) have completely
eliminated all alt.* groups from their servers. This affects me, as
well. It may yet force me to get an extra-cost service added.

I know I've posted this link at least a dozen times. It is a read
only portal for selected binaries newsgroups.

http://www.usenet-replayer.com/

First time it got my attention. I'll give it a shot.

Thanks,
Jon

Okay. It got my attention long enough to register and check for the
group, alt.binaries.schematics.electronic. It doesn't appear on their
list. Besides, they don't support NNTP and would be quite difficult
to make use of, if I understand what this means.

In short, it doesn't look usable for this purpose because it doesn't
include the group. And it doesn't look usable, more generally,
because the mechanism (emailing every message, or every message of a
thread) isn't a means I would willingly choose.
Click to expand...

that's strange, because I've used it when the Earthlink news farm was
dying. It is like Google groups, except it is a read only portal. I
used it when someone mentioned a binary file on the group. The
propogation is slow, but most binaries from the group do end up there.

http://www.usenet-replayer.com/groups/alt.binaries.schematics.electronic.html


--
You can't have a sense of humor, if you have no sense!
 
On Mon, 08 Jun 2009 05:15:35 -0400, "Michael A. Terrell"
<mike.terrell@earthlink.net> wrote:

Jon Kirwan wrote:

On Mon, 08 Jun 2009 01:37:52 -0700, Jon Kirwan
jonk@infinitefactors.org> wrote:

On Mon, 08 Jun 2009 00:11:45 -0400, "Michael A. Terrell"
mike.terrell@earthlink.net> wrote:

Jon Kirwan wrote:

On Sun, 7 Jun 2009 17:10:26 -0700, "BobW"
nimby_GIMME_SOME_SPAM@roadrunner.com> wrote:


"vic" <news@bidouille.org> wrote in message
news:4a291f7d$0$696$426a74cc@news.free.fr...
Hi,

I need to generate a symmetric +/-5V supply from a single +12V supply. I
need about 150mA from the +5V side, and less than 50mA from the -5V side.

I've thought about using two 7805 in the following configuration :


Supply + ----+--------[7805]---- +5 V
| |
`-[7805]----+------ 0v
|
Supply - ---------+------------- -5V


does it make sense ? Would it be OK for the 7805 to sink current instead
of sourcing current, in the case of the 7805 in charge of the 0V supply ?

If this idea is garbage, what would be the recommended solution to this
problem ?

Thanks.

See alt.binaries.schematics.electronic for a (linear) circuit that will work
up to about 200mA on each supply with a minimum input voltage of 10.6V.

Sadly, Verizon (and other major service providers) have completely
eliminated all alt.* groups from their servers. This affects me, as
well. It may yet force me to get an extra-cost service added.

I know I've posted this link at least a dozen times. It is a read
only portal for selected binaries newsgroups.

http://www.usenet-replayer.com/

First time it got my attention. I'll give it a shot.

Thanks,
Jon

Okay. It got my attention long enough to register and check for the
group, alt.binaries.schematics.electronic. It doesn't appear on their
list. Besides, they don't support NNTP and would be quite difficult
to make use of, if I understand what this means.

In short, it doesn't look usable for this purpose because it doesn't
include the group. And it doesn't look usable, more generally,
because the mechanism (emailing every message, or every message of a
thread) isn't a means I would willingly choose.

that's strange, because I've used it when the Earthlink news farm was
dying. It is like Google groups, except it is a read only portal. I
used it when someone mentioned a binary file on the group. The
propogation is slow, but most binaries from the group do end up there.

http://www.usenet-replayer.com/groups/alt.binaries.schematics.electronic.html
Click to expand...
Thanks. What I did before was to go to the main page at which you
referred me and then clicked on "get the USENET messages" link. That
took me to:

http://www.usenet-replayer.com/sign_up_feed.html

I then went through the process of signing up. They sent me an email,
which I saved and edited into an HTML page. Loaded that, then clicked
on the "Feed On" button. (I gather they allow me to sign up for 10
different groups.) When I clicked that JAVA link, it set me up on a
page where I could ask it to display the ALT groups I might want to
include in my 10. alt.binaries.schematics.electronic wasn't in the
list.

What you've shown me is something different. It appears to be a bit
strange. I'm struggling with the format, which appears to only be the
pictures and no text bodies when messages don't include pictures. If
so, that means I may be able to access pictures this way but not
comments sent to the group about them. Threading seems... well, I'm
not seeing how, yet. It looks as though I may be able to pick up on
some pictures this way, though. If I'm quick about it... otherwise I
may have to weed through pages and hope that my eye can pick out what
I'm looking for in the thumbnails.

Perhaps they don't include alt.binaries.schematics.electronic in their
emailing service, but do offer a web page with pictures-only component
from the group?

Jon
 
"Jon Kirwan" <jonk@infinitefactors.org> wrote in message
news:9goq251ual7soq52aiestb3d8kqsr25mo7@4ax.com...
On Mon, 08 Jun 2009 05:15:35 -0400, "Michael A. Terrell"
mike.terrell@earthlink.net> wrote:

Jon Kirwan wrote:

On Mon, 08 Jun 2009 01:37:52 -0700, Jon Kirwan
jonk@infinitefactors.org> wrote:

On Mon, 08 Jun 2009 00:11:45 -0400, "Michael A. Terrell"
mike.terrell@earthlink.net> wrote:

Jon Kirwan wrote:

On Sun, 7 Jun 2009 17:10:26 -0700, "BobW"
nimby_GIMME_SOME_SPAM@roadrunner.com> wrote:


"vic" <news@bidouille.org> wrote in message
news:4a291f7d$0$696$426a74cc@news.free.fr...
Hi,

I need to generate a symmetric +/-5V supply from a single +12V
supply. I
need about 150mA from the +5V side, and less than 50mA from
the -5V side.

I've thought about using two 7805 in the following configuration
:


Supply + ----+--------[7805]---- +5 V
| |
`-[7805]----+------ 0v
|
Supply - ---------+------------- -5V


does it make sense ? Would it be OK for the 7805 to sink current
instead
of sourcing current, in the case of the 7805 in charge of the 0V
supply ?

If this idea is garbage, what would be the recommended solution
to this
problem ?

Thanks.

See alt.binaries.schematics.electronic for a (linear) circuit that
will work
up to about 200mA on each supply with a minimum input voltage of
10.6V.

Sadly, Verizon (and other major service providers) have completely
eliminated all alt.* groups from their servers. This affects me, as
well. It may yet force me to get an extra-cost service added.

I know I've posted this link at least a dozen times. It is a read
only portal for selected binaries newsgroups.

http://www.usenet-replayer.com/

First time it got my attention. I'll give it a shot.

Thanks,
Jon

Okay. It got my attention long enough to register and check for the
group, alt.binaries.schematics.electronic. It doesn't appear on their
list. Besides, they don't support NNTP and would be quite difficult
to make use of, if I understand what this means.

In short, it doesn't look usable for this purpose because it doesn't
include the group. And it doesn't look usable, more generally,
because the mechanism (emailing every message, or every message of a
thread) isn't a means I would willingly choose.

that's strange, because I've used it when the Earthlink news farm was
dying. It is like Google groups, except it is a read only portal. I
used it when someone mentioned a binary file on the group. The
propogation is slow, but most binaries from the group do end up there.

http://www.usenet-replayer.com/groups/alt.binaries.schematics.electronic.html

Thanks. What I did before was to go to the main page at which you
referred me and then clicked on "get the USENET messages" link. That
took me to:

http://www.usenet-replayer.com/sign_up_feed.html

I then went through the process of signing up. They sent me an email,
which I saved and edited into an HTML page. Loaded that, then clicked
on the "Feed On" button. (I gather they allow me to sign up for 10
different groups.) When I clicked that JAVA link, it set me up on a
page where I could ask it to display the ALT groups I might want to
include in my 10. alt.binaries.schematics.electronic wasn't in the
list.

What you've shown me is something different. It appears to be a bit
strange. I'm struggling with the format, which appears to only be the
pictures and no text bodies when messages don't include pictures. If
so, that means I may be able to access pictures this way but not
comments sent to the group about them. Threading seems... well, I'm
not seeing how, yet. It looks as though I may be able to pick up on
some pictures this way, though. If I'm quick about it... otherwise I
may have to weed through pages and hope that my eye can pick out what
I'm looking for in the thumbnails.

Perhaps they don't include alt.binaries.schematics.electronic in their
emailing service, but do offer a web page with pictures-only component
from the group?

Jon
Click to expand...
Google for binary news server - there's some freebies listed.
 
On Mon, 8 Jun 2009 21:08:45 +0100, "ian field"
<gangprobing.alien@ntlworld.com> wrote:

"Jon Kirwan" <jonk@infinitefactors.org> wrote in message
news:9goq251ual7soq52aiestb3d8kqsr25mo7@4ax.com...
On Mon, 08 Jun 2009 05:15:35 -0400, "Michael A. Terrell"
mike.terrell@earthlink.net> wrote:

Jon Kirwan wrote:

On Mon, 08 Jun 2009 01:37:52 -0700, Jon Kirwan
jonk@infinitefactors.org> wrote:

On Mon, 08 Jun 2009 00:11:45 -0400, "Michael A. Terrell"
mike.terrell@earthlink.net> wrote:

Jon Kirwan wrote:

On Sun, 7 Jun 2009 17:10:26 -0700, "BobW"
nimby_GIMME_SOME_SPAM@roadrunner.com> wrote:


"vic" <news@bidouille.org> wrote in message
news:4a291f7d$0$696$426a74cc@news.free.fr...
Hi,

I need to generate a symmetric +/-5V supply from a single +12V
supply. I
need about 150mA from the +5V side, and less than 50mA from
the -5V side.

I've thought about using two 7805 in the following configuration
:


Supply + ----+--------[7805]---- +5 V
| |
`-[7805]----+------ 0v
|
Supply - ---------+------------- -5V


does it make sense ? Would it be OK for the 7805 to sink current
instead
of sourcing current, in the case of the 7805 in charge of the 0V
supply ?

If this idea is garbage, what would be the recommended solution
to this
problem ?

Thanks.

See alt.binaries.schematics.electronic for a (linear) circuit that
will work
up to about 200mA on each supply with a minimum input voltage of
10.6V.

Sadly, Verizon (and other major service providers) have completely
eliminated all alt.* groups from their servers. This affects me, as
well. It may yet force me to get an extra-cost service added.

I know I've posted this link at least a dozen times. It is a read
only portal for selected binaries newsgroups.

http://www.usenet-replayer.com/

First time it got my attention. I'll give it a shot.

Thanks,
Jon

Okay. It got my attention long enough to register and check for the
group, alt.binaries.schematics.electronic. It doesn't appear on their
list. Besides, they don't support NNTP and would be quite difficult
to make use of, if I understand what this means.

In short, it doesn't look usable for this purpose because it doesn't
include the group. And it doesn't look usable, more generally,
because the mechanism (emailing every message, or every message of a
thread) isn't a means I would willingly choose.

that's strange, because I've used it when the Earthlink news farm was
dying. It is like Google groups, except it is a read only portal. I
used it when someone mentioned a binary file on the group. The
propogation is slow, but most binaries from the group do end up there.

http://www.usenet-replayer.com/groups/alt.binaries.schematics.electronic.html

Thanks. What I did before was to go to the main page at which you
referred me and then clicked on "get the USENET messages" link. That
took me to:

http://www.usenet-replayer.com/sign_up_feed.html

I then went through the process of signing up. They sent me an email,
which I saved and edited into an HTML page. Loaded that, then clicked
on the "Feed On" button. (I gather they allow me to sign up for 10
different groups.) When I clicked that JAVA link, it set me up on a
page where I could ask it to display the ALT groups I might want to
include in my 10. alt.binaries.schematics.electronic wasn't in the
list.

What you've shown me is something different. It appears to be a bit
strange. I'm struggling with the format, which appears to only be the
pictures and no text bodies when messages don't include pictures. If
so, that means I may be able to access pictures this way but not
comments sent to the group about them. Threading seems... well, I'm
not seeing how, yet. It looks as though I may be able to pick up on
some pictures this way, though. If I'm quick about it... otherwise I
may have to weed through pages and hope that my eye can pick out what
I'm looking for in the thumbnails.

Perhaps they don't include alt.binaries.schematics.electronic in their
emailing service, but do offer a web page with pictures-only component
from the group?

Jon

Google for binary news server - there's some freebies listed.
Click to expand...
I did, some time ago. Finding a good NNTP server that includes a
binary newsgroup like alt.binaries.schematics.electronic was a "no
show." I spent the spare time of a few days on it. Not looking
forward to that, again. Especially, if someone has a specific idea on
hand that does NNTP for that group in particular.

Of course, when I get a strong enough interest to push the time
envelop out some more in the future, I'll take another shot at it.

But for now, yeah. Been there, done that, came up zero.

Jon
 
"Jon Kirwan" <jonk@infinitefactors.org> wrote in message
news:80sq25hvh6cns0v3vin15mtn3absg1aq25@4ax.com...
On Mon, 8 Jun 2009 21:08:45 +0100, "ian field"
gangprobing.alien@ntlworld.com> wrote:


"Jon Kirwan" <jonk@infinitefactors.org> wrote in message
news:9goq251ual7soq52aiestb3d8kqsr25mo7@4ax.com...
On Mon, 08 Jun 2009 05:15:35 -0400, "Michael A. Terrell"
mike.terrell@earthlink.net> wrote:

Jon Kirwan wrote:

On Mon, 08 Jun 2009 01:37:52 -0700, Jon Kirwan
jonk@infinitefactors.org> wrote:

On Mon, 08 Jun 2009 00:11:45 -0400, "Michael A. Terrell"
mike.terrell@earthlink.net> wrote:

Jon Kirwan wrote:

On Sun, 7 Jun 2009 17:10:26 -0700, "BobW"
nimby_GIMME_SOME_SPAM@roadrunner.com> wrote:


"vic" <news@bidouille.org> wrote in message
news:4a291f7d$0$696$426a74cc@news.free.fr...
Hi,

I need to generate a symmetric +/-5V supply from a single +12V
supply. I
need about 150mA from the +5V side, and less than 50mA from
the -5V side.

I've thought about using two 7805 in the following
configuration
:


Supply + ----+--------[7805]---- +5 V
| |
`-[7805]----+------ 0v
|
Supply - ---------+------------- -5V


does it make sense ? Would it be OK for the 7805 to sink
current
instead
of sourcing current, in the case of the 7805 in charge of the
0V
supply ?

If this idea is garbage, what would be the recommended solution
to this
problem ?

Thanks.

See alt.binaries.schematics.electronic for a (linear) circuit
that
will work
up to about 200mA on each supply with a minimum input voltage of
10.6V.

Sadly, Verizon (and other major service providers) have completely
eliminated all alt.* groups from their servers. This affects me,
as
well. It may yet force me to get an extra-cost service added.

I know I've posted this link at least a dozen times. It is a
read
only portal for selected binaries newsgroups.

http://www.usenet-replayer.com/

First time it got my attention. I'll give it a shot.

Thanks,
Jon

Okay. It got my attention long enough to register and check for the
group, alt.binaries.schematics.electronic. It doesn't appear on their
list. Besides, they don't support NNTP and would be quite difficult
to make use of, if I understand what this means.

In short, it doesn't look usable for this purpose because it doesn't
include the group. And it doesn't look usable, more generally,
because the mechanism (emailing every message, or every message of a
thread) isn't a means I would willingly choose.

that's strange, because I've used it when the Earthlink news farm was
dying. It is like Google groups, except it is a read only portal. I
used it when someone mentioned a binary file on the group. The
propogation is slow, but most binaries from the group do end up there.

http://www.usenet-replayer.com/groups/alt.binaries.schematics.electronic.html

Thanks. What I did before was to go to the main page at which you
referred me and then clicked on "get the USENET messages" link. That
took me to:

http://www.usenet-replayer.com/sign_up_feed.html

I then went through the process of signing up. They sent me an email,
which I saved and edited into an HTML page. Loaded that, then clicked
on the "Feed On" button. (I gather they allow me to sign up for 10
different groups.) When I clicked that JAVA link, it set me up on a
page where I could ask it to display the ALT groups I might want to
include in my 10. alt.binaries.schematics.electronic wasn't in the
list.

What you've shown me is something different. It appears to be a bit
strange. I'm struggling with the format, which appears to only be the
pictures and no text bodies when messages don't include pictures. If
so, that means I may be able to access pictures this way but not
comments sent to the group about them. Threading seems... well, I'm
not seeing how, yet. It looks as though I may be able to pick up on
some pictures this way, though. If I'm quick about it... otherwise I
may have to weed through pages and hope that my eye can pick out what
I'm looking for in the thumbnails.

Perhaps they don't include alt.binaries.schematics.electronic in their
emailing service, but do offer a web page with pictures-only component
from the group?

Jon

Google for binary news server - there's some freebies listed.

I did, some time ago. Finding a good NNTP server that includes a
binary newsgroup like alt.binaries.schematics.electronic was a "no
show." I spent the spare time of a few days on it. Not looking
forward to that, again. Especially, if someone has a specific idea on
hand that does NNTP for that group in particular.

Of course, when I get a strong enough interest to push the time
envelop out some more in the future, I'll take another shot at it.

But for now, yeah. Been there, done that, came up zero.

Jon
Click to expand...
One I clicked on installed as server name: 202.177.16.1321 it seems to work
and carries alt.binaries,schematics.electronic
 
ian field wrote:

"Jon Kirwan" <jonk@infinitefactors.org> wrote in message
news:80sq25hvh6cns0v3vin15mtn3absg1aq25@4ax.com...
On Mon, 8 Jun 2009 21:08:45 +0100, "ian field"
gangprobing.alien@ntlworld.com> wrote:


"Jon Kirwan" <jonk@infinitefactors.org> wrote in message
news:9goq251ual7soq52aiestb3d8kqsr25mo7@4ax.com...
On Mon, 08 Jun 2009 05:15:35 -0400, "Michael A. Terrell"
mike.terrell@earthlink.net> wrote:

Jon Kirwan wrote:

On Mon, 08 Jun 2009 01:37:52 -0700, Jon Kirwan
jonk@infinitefactors.org> wrote:

On Mon, 08 Jun 2009 00:11:45 -0400, "Michael A. Terrell"
mike.terrell@earthlink.net> wrote:

Jon Kirwan wrote:

On Sun, 7 Jun 2009 17:10:26 -0700, "BobW"
nimby_GIMME_SOME_SPAM@roadrunner.com> wrote:


"vic" <news@bidouille.org> wrote in message
news:4a291f7d$0$696$426a74cc@news.free.fr...
Hi,

I need to generate a symmetric +/-5V supply from a single
+12V supply. I
need about 150mA from the +5V side, and less than 50mA
from the -5V side.

I've thought about using two 7805 in the following
configuration
:


Supply + ----+--------[7805]---- +5 V
| |
`-[7805]----+------ 0v
|
Supply - ---------+------------- -5V


does it make sense ? Would it be OK for the 7805 to sink
current
instead
of sourcing current, in the case of the 7805 in charge of
the 0V
supply ?

If this idea is garbage, what would be the recommended
solution to this
problem ?

Thanks.

See alt.binaries.schematics.electronic for a (linear)
circuit that
will work
up to about 200mA on each supply with a minimum input
voltage of 10.6V.

Sadly, Verizon (and other major service providers) have
completely
eliminated all alt.* groups from their servers. This affects
me, as
well. It may yet force me to get an extra-cost service
added.

I know I've posted this link at least a dozen times. It is
a
read
only portal for selected binaries newsgroups.

http://www.usenet-replayer.com/

First time it got my attention. I'll give it a shot.

Thanks,
Jon

Okay. It got my attention long enough to register and check for
the
group, alt.binaries.schematics.electronic. It doesn't appear on
their
list. Besides, they don't support NNTP and would be quite
difficult to make use of, if I understand what this means.

In short, it doesn't look usable for this purpose because it
doesn't
include the group. And it doesn't look usable, more generally,
because the mechanism (emailing every message, or every message
of a thread) isn't a means I would willingly choose.

that's strange, because I've used it when the Earthlink news
farm was
dying. It is like Google groups, except it is a read only portal.
I
used it when someone mentioned a binary file on the group. The
propogation is slow, but most binaries from the group do end up
there.

http://www.usenet-replayer.com/groups/alt.binaries.schematics.electronic.html

Thanks. What I did before was to go to the main page at which you
referred me and then clicked on "get the USENET messages" link.
That took me to:

http://www.usenet-replayer.com/sign_up_feed.html

I then went through the process of signing up. They sent me an
email,
which I saved and edited into an HTML page. Loaded that, then
clicked
on the "Feed On" button. (I gather they allow me to sign up for 10
different groups.) When I clicked that JAVA link, it set me up on
a page where I could ask it to display the ALT groups I might want
to
include in my 10. alt.binaries.schematics.electronic wasn't in the
list.

What you've shown me is something different. It appears to be a
bit
strange. I'm struggling with the format, which appears to only be
the
pictures and no text bodies when messages don't include pictures.
If so, that means I may be able to access pictures this way but not
comments sent to the group about them. Threading seems... well,
I'm
not seeing how, yet. It looks as though I may be able to pick up
on
some pictures this way, though. If I'm quick about it... otherwise
I may have to weed through pages and hope that my eye can pick out
what I'm looking for in the thumbnails.

Perhaps they don't include alt.binaries.schematics.electronic in
their emailing service, but do offer a web page with pictures-only
component from the group?

Jon

Google for binary news server - there's some freebies listed.

I did, some time ago. Finding a good NNTP server that includes a
binary newsgroup like alt.binaries.schematics.electronic was a "no
show." I spent the spare time of a few days on it. Not looking
forward to that, again. Especially, if someone has a specific idea
on hand that does NNTP for that group in particular.

Of course, when I get a strong enough interest to push the time
envelop out some more in the future, I'll take another shot at it.

But for now, yeah. Been there, done that, came up zero.

Jon

One I clicked on installed as server name: 202.177.16.1321 it seems to
work and carries alt.binaries,schematics.electronic
Click to expand...
Ian. Would you like to correct that ip 202.177.16.??? I guessing its
132. Since that responds with "Operation in Progress"

--
Best Regards:
Baron.
 
On Mon, 08 Jun 2009 21:56:55 +0100, Baron
<baron.nospam@linuxmaniac.nospam.net> wrote:

ian field wrote:


"Jon Kirwan" <jonk@infinitefactors.org> wrote in message
news:80sq25hvh6cns0v3vin15mtn3absg1aq25@4ax.com...
On Mon, 8 Jun 2009 21:08:45 +0100, "ian field"
gangprobing.alien@ntlworld.com> wrote:


"Jon Kirwan" <jonk@infinitefactors.org> wrote in message
news:9goq251ual7soq52aiestb3d8kqsr25mo7@4ax.com...
On Mon, 08 Jun 2009 05:15:35 -0400, "Michael A. Terrell"
mike.terrell@earthlink.net> wrote:

Jon Kirwan wrote:

On Mon, 08 Jun 2009 01:37:52 -0700, Jon Kirwan
jonk@infinitefactors.org> wrote:

On Mon, 08 Jun 2009 00:11:45 -0400, "Michael A. Terrell"
mike.terrell@earthlink.net> wrote:

Jon Kirwan wrote:

On Sun, 7 Jun 2009 17:10:26 -0700, "BobW"
nimby_GIMME_SOME_SPAM@roadrunner.com> wrote:


"vic" <news@bidouille.org> wrote in message
news:4a291f7d$0$696$426a74cc@news.free.fr...
Hi,

I need to generate a symmetric +/-5V supply from a single
+12V supply. I
need about 150mA from the +5V side, and less than 50mA
from the -5V side.

I've thought about using two 7805 in the following
configuration
:


Supply + ----+--------[7805]---- +5 V
| |
`-[7805]----+------ 0v
|
Supply - ---------+------------- -5V


does it make sense ? Would it be OK for the 7805 to sink
current
instead
of sourcing current, in the case of the 7805 in charge of
the 0V
supply ?

If this idea is garbage, what would be the recommended
solution to this
problem ?

Thanks.

See alt.binaries.schematics.electronic for a (linear)
circuit that
will work
up to about 200mA on each supply with a minimum input
voltage of 10.6V.

Sadly, Verizon (and other major service providers) have
completely
eliminated all alt.* groups from their servers. This affects
me, as
well. It may yet force me to get an extra-cost service
added.

I know I've posted this link at least a dozen times. It is
a
read
only portal for selected binaries newsgroups.

http://www.usenet-replayer.com/

First time it got my attention. I'll give it a shot.

Thanks,
Jon

Okay. It got my attention long enough to register and check for
the
group, alt.binaries.schematics.electronic. It doesn't appear on
their
list. Besides, they don't support NNTP and would be quite
difficult to make use of, if I understand what this means.

In short, it doesn't look usable for this purpose because it
doesn't
include the group. And it doesn't look usable, more generally,
because the mechanism (emailing every message, or every message
of a thread) isn't a means I would willingly choose.

that's strange, because I've used it when the Earthlink news
farm was
dying. It is like Google groups, except it is a read only portal.
I
used it when someone mentioned a binary file on the group. The
propogation is slow, but most binaries from the group do end up
there.

http://www.usenet-replayer.com/groups/alt.binaries.schematics.electronic.html

Thanks. What I did before was to go to the main page at which you
referred me and then clicked on "get the USENET messages" link.
That took me to:

http://www.usenet-replayer.com/sign_up_feed.html

I then went through the process of signing up. They sent me an
email,
which I saved and edited into an HTML page. Loaded that, then
clicked
on the "Feed On" button. (I gather they allow me to sign up for 10
different groups.) When I clicked that JAVA link, it set me up on
a page where I could ask it to display the ALT groups I might want
to
include in my 10. alt.binaries.schematics.electronic wasn't in the
list.

What you've shown me is something different. It appears to be a
bit
strange. I'm struggling with the format, which appears to only be
the
pictures and no text bodies when messages don't include pictures.
If so, that means I may be able to access pictures this way but not
comments sent to the group about them. Threading seems... well,
I'm
not seeing how, yet. It looks as though I may be able to pick up
on
some pictures this way, though. If I'm quick about it... otherwise
I may have to weed through pages and hope that my eye can pick out
what I'm looking for in the thumbnails.

Perhaps they don't include alt.binaries.schematics.electronic in
their emailing service, but do offer a web page with pictures-only
component from the group?

Jon

Google for binary news server - there's some freebies listed.

I did, some time ago. Finding a good NNTP server that includes a
binary newsgroup like alt.binaries.schematics.electronic was a "no
show." I spent the spare time of a few days on it. Not looking
forward to that, again. Especially, if someone has a specific idea
on hand that does NNTP for that group in particular.

Of course, when I get a strong enough interest to push the time
envelop out some more in the future, I'll take another shot at it.

But for now, yeah. Been there, done that, came up zero.

Jon

One I clicked on installed as server name: 202.177.16.1321 it seems to
work and carries alt.binaries,schematics.electronic

Ian. Would you like to correct that ip 202.177.16.??? I guessing its
132. Since that responds with "Operation in Progress"
Click to expand...
Hehe. 1321 is indeed impossible -- at least with the traditional
system which allows only up to 255.

Jon
 
"Baron" <baron.nospam@linuxmaniac.nospam.net> wrote in message
news:h0ju3f$j2u$1@news.eternal-september.org...
ian field wrote:


"Jon Kirwan" <jonk@infinitefactors.org> wrote in message
news:80sq25hvh6cns0v3vin15mtn3absg1aq25@4ax.com...
On Mon, 8 Jun 2009 21:08:45 +0100, "ian field"
gangprobing.alien@ntlworld.com> wrote:


"Jon Kirwan" <jonk@infinitefactors.org> wrote in message
news:9goq251ual7soq52aiestb3d8kqsr25mo7@4ax.com...
On Mon, 08 Jun 2009 05:15:35 -0400, "Michael A. Terrell"
mike.terrell@earthlink.net> wrote:

Jon Kirwan wrote:

On Mon, 08 Jun 2009 01:37:52 -0700, Jon Kirwan
jonk@infinitefactors.org> wrote:

On Mon, 08 Jun 2009 00:11:45 -0400, "Michael A. Terrell"
mike.terrell@earthlink.net> wrote:

Jon Kirwan wrote:

On Sun, 7 Jun 2009 17:10:26 -0700, "BobW"
nimby_GIMME_SOME_SPAM@roadrunner.com> wrote:


"vic" <news@bidouille.org> wrote in message
news:4a291f7d$0$696$426a74cc@news.free.fr...
Hi,

I need to generate a symmetric +/-5V supply from a single
+12V supply. I
need about 150mA from the +5V side, and less than 50mA
from the -5V side.

I've thought about using two 7805 in the following
configuration
:


Supply + ----+--------[7805]---- +5 V
| |
`-[7805]----+------ 0v
|
Supply - ---------+------------- -5V


does it make sense ? Would it be OK for the 7805 to sink
current
instead
of sourcing current, in the case of the 7805 in charge of
the 0V
supply ?

If this idea is garbage, what would be the recommended
solution to this
problem ?

Thanks.

See alt.binaries.schematics.electronic for a (linear)
circuit that
will work
up to about 200mA on each supply with a minimum input
voltage of 10.6V.

Sadly, Verizon (and other major service providers) have
completely
eliminated all alt.* groups from their servers. This affects
me, as
well. It may yet force me to get an extra-cost service
added.

I know I've posted this link at least a dozen times. It is
a
read
only portal for selected binaries newsgroups.

http://www.usenet-replayer.com/

First time it got my attention. I'll give it a shot.

Thanks,
Jon

Okay. It got my attention long enough to register and check for
the
group, alt.binaries.schematics.electronic. It doesn't appear on
their
list. Besides, they don't support NNTP and would be quite
difficult to make use of, if I understand what this means.

In short, it doesn't look usable for this purpose because it
doesn't
include the group. And it doesn't look usable, more generally,
because the mechanism (emailing every message, or every message
of a thread) isn't a means I would willingly choose.

that's strange, because I've used it when the Earthlink news
farm was
dying. It is like Google groups, except it is a read only portal.
I
used it when someone mentioned a binary file on the group. The
propogation is slow, but most binaries from the group do end up
there.

http://www.usenet-replayer.com/groups/alt.binaries.schematics.electronic.html

Thanks. What I did before was to go to the main page at which you
referred me and then clicked on "get the USENET messages" link.
That took me to:

http://www.usenet-replayer.com/sign_up_feed.html

I then went through the process of signing up. They sent me an
email,
which I saved and edited into an HTML page. Loaded that, then
clicked
on the "Feed On" button. (I gather they allow me to sign up for 10
different groups.) When I clicked that JAVA link, it set me up on
a page where I could ask it to display the ALT groups I might want
to
include in my 10. alt.binaries.schematics.electronic wasn't in the
list.

What you've shown me is something different. It appears to be a
bit
strange. I'm struggling with the format, which appears to only be
the
pictures and no text bodies when messages don't include pictures.
If so, that means I may be able to access pictures this way but not
comments sent to the group about them. Threading seems... well,
I'm
not seeing how, yet. It looks as though I may be able to pick up
on
some pictures this way, though. If I'm quick about it... otherwise
I may have to weed through pages and hope that my eye can pick out
what I'm looking for in the thumbnails.

Perhaps they don't include alt.binaries.schematics.electronic in
their emailing service, but do offer a web page with pictures-only
component from the group?

Jon

Google for binary news server - there's some freebies listed.

I did, some time ago. Finding a good NNTP server that includes a
binary newsgroup like alt.binaries.schematics.electronic was a "no
show." I spent the spare time of a few days on it. Not looking
forward to that, again. Especially, if someone has a specific idea
on hand that does NNTP for that group in particular.

Of course, when I get a strong enough interest to push the time
envelop out some more in the future, I'll take another shot at it.

But for now, yeah. Been there, done that, came up zero.

Jon

One I clicked on installed as server name: 202.177.16.1321 it seems to
work and carries alt.binaries,schematics.electronic

Ian. Would you like to correct that ip 202.177.16.??? I guessing its
132. Since that responds with "Operation in Progress"

--
Best Regards:
Baron.
Click to expand...
121
 
"Jon Kirwan" <jonk@infinitefactors.org> wrote in message
news:ebvq25d3k26ld9t48q8kts38ru89bv31ah@4ax.com...
On Mon, 08 Jun 2009 21:56:55 +0100, Baron
baron.nospam@linuxmaniac.nospam.net> wrote:

ian field wrote:


"Jon Kirwan" <jonk@infinitefactors.org> wrote in message
news:80sq25hvh6cns0v3vin15mtn3absg1aq25@4ax.com...
On Mon, 8 Jun 2009 21:08:45 +0100, "ian field"
gangprobing.alien@ntlworld.com> wrote:


"Jon Kirwan" <jonk@infinitefactors.org> wrote in message
news:9goq251ual7soq52aiestb3d8kqsr25mo7@4ax.com...
On Mon, 08 Jun 2009 05:15:35 -0400, "Michael A. Terrell"
mike.terrell@earthlink.net> wrote:

Jon Kirwan wrote:

On Mon, 08 Jun 2009 01:37:52 -0700, Jon Kirwan
jonk@infinitefactors.org> wrote:

On Mon, 08 Jun 2009 00:11:45 -0400, "Michael A. Terrell"
mike.terrell@earthlink.net> wrote:

Jon Kirwan wrote:

On Sun, 7 Jun 2009 17:10:26 -0700, "BobW"
nimby_GIMME_SOME_SPAM@roadrunner.com> wrote:


"vic" <news@bidouille.org> wrote in message
news:4a291f7d$0$696$426a74cc@news.free.fr...
Hi,

I need to generate a symmetric +/-5V supply from a single
+12V supply. I
need about 150mA from the +5V side, and less than 50mA
from the -5V side.

I've thought about using two 7805 in the following
configuration
:


Supply + ----+--------[7805]---- +5 V
| |
`-[7805]----+------ 0v
|
Supply - ---------+------------- -5V


does it make sense ? Would it be OK for the 7805 to sink
current
instead
of sourcing current, in the case of the 7805 in charge of
the 0V
supply ?

If this idea is garbage, what would be the recommended
solution to this
problem ?

Thanks.

See alt.binaries.schematics.electronic for a (linear)
circuit that
will work
up to about 200mA on each supply with a minimum input
voltage of 10.6V.

Sadly, Verizon (and other major service providers) have
completely
eliminated all alt.* groups from their servers. This affects
me, as
well. It may yet force me to get an extra-cost service
added.

I know I've posted this link at least a dozen times. It is
a
read
only portal for selected binaries newsgroups.

http://www.usenet-replayer.com/

First time it got my attention. I'll give it a shot.

Thanks,
Jon

Okay. It got my attention long enough to register and check for
the
group, alt.binaries.schematics.electronic. It doesn't appear on
their
list. Besides, they don't support NNTP and would be quite
difficult to make use of, if I understand what this means.

In short, it doesn't look usable for this purpose because it
doesn't
include the group. And it doesn't look usable, more generally,
because the mechanism (emailing every message, or every message
of a thread) isn't a means I would willingly choose.

that's strange, because I've used it when the Earthlink news
farm was
dying. It is like Google groups, except it is a read only portal.
I
used it when someone mentioned a binary file on the group. The
propogation is slow, but most binaries from the group do end up
there.

http://www.usenet-replayer.com/groups/alt.binaries.schematics.electronic.html

Thanks. What I did before was to go to the main page at which you
referred me and then clicked on "get the USENET messages" link.
That took me to:

http://www.usenet-replayer.com/sign_up_feed.html

I then went through the process of signing up. They sent me an
email,
which I saved and edited into an HTML page. Loaded that, then
clicked
on the "Feed On" button. (I gather they allow me to sign up for 10
different groups.) When I clicked that JAVA link, it set me up on
a page where I could ask it to display the ALT groups I might want
to
include in my 10. alt.binaries.schematics.electronic wasn't in the
list.

What you've shown me is something different. It appears to be a
bit
strange. I'm struggling with the format, which appears to only be
the
pictures and no text bodies when messages don't include pictures.
If so, that means I may be able to access pictures this way but not
comments sent to the group about them. Threading seems... well,
I'm
not seeing how, yet. It looks as though I may be able to pick up
on
some pictures this way, though. If I'm quick about it... otherwise
I may have to weed through pages and hope that my eye can pick out
what I'm looking for in the thumbnails.

Perhaps they don't include alt.binaries.schematics.electronic in
their emailing service, but do offer a web page with pictures-only
component from the group?

Jon

Google for binary news server - there's some freebies listed.

I did, some time ago. Finding a good NNTP server that includes a
binary newsgroup like alt.binaries.schematics.electronic was a "no
show." I spent the spare time of a few days on it. Not looking
forward to that, again. Especially, if someone has a specific idea
on hand that does NNTP for that group in particular.

Of course, when I get a strong enough interest to push the time
envelop out some more in the future, I'll take another shot at it.

But for now, yeah. Been there, done that, came up zero.

Jon

One I clicked on installed as server name: 202.177.16.1321 it seems to
work and carries alt.binaries,schematics.electronic

Ian. Would you like to correct that ip 202.177.16.??? I guessing its
132. Since that responds with "Operation in Progress"

Hehe. 1321 is indeed impossible -- at least with the traditional
system which allows only up to 255.

Jon
Click to expand...
Here's the right number again - 121
 
ian field wrote:
One I clicked on installed as server name: 202.177.16.1321 it seems to work
and carries alt.binaries,schematics.electronic
Click to expand...

202.177.16.132 is a Hong Kong IP address.


--
You can't have a sense of humor, if you have no sense!
 
ian field wrote:

"Jon Kirwan" <jonk@infinitefactors.org> wrote in message
news:ebvq25d3k26ld9t48q8kts38ru89bv31ah@4ax.com...
On Mon, 08 Jun 2009 21:56:55 +0100, Baron
baron.nospam@linuxmaniac.nospam.net> wrote:

ian field wrote:


"Jon Kirwan" <jonk@infinitefactors.org> wrote in message
news:80sq25hvh6cns0v3vin15mtn3absg1aq25@4ax.com...
On Mon, 8 Jun 2009 21:08:45 +0100, "ian field"
gangprobing.alien@ntlworld.com> wrote:


"Jon Kirwan" <jonk@infinitefactors.org> wrote in message
news:9goq251ual7soq52aiestb3d8kqsr25mo7@4ax.com...
On Mon, 08 Jun 2009 05:15:35 -0400, "Michael A. Terrell"
mike.terrell@earthlink.net> wrote:

Jon Kirwan wrote:

On Mon, 08 Jun 2009 01:37:52 -0700, Jon Kirwan
jonk@infinitefactors.org> wrote:

On Mon, 08 Jun 2009 00:11:45 -0400, "Michael A. Terrell"
mike.terrell@earthlink.net> wrote:

Jon Kirwan wrote:

On Sun, 7 Jun 2009 17:10:26 -0700, "BobW"
nimby_GIMME_SOME_SPAM@roadrunner.com> wrote:


"vic" <news@bidouille.org> wrote in message
news:4a291f7d$0$696$426a74cc@news.free.fr...
Hi,

I need to generate a symmetric +/-5V supply from a
single +12V supply. I
need about 150mA from the +5V side, and less than 50mA
from the -5V side.

I've thought about using two 7805 in the following
configuration
:


Supply + ----+--------[7805]---- +5 V
| |
`-[7805]----+------ 0v
|
Supply - ---------+------------- -5V


does it make sense ? Would it be OK for the 7805 to
sink current
instead
of sourcing current, in the case of the 7805 in charge
of the 0V
supply ?

If this idea is garbage, what would be the recommended
solution to this
problem ?

Thanks.

See alt.binaries.schematics.electronic for a (linear)
circuit that
will work
up to about 200mA on each supply with a minimum input
voltage of 10.6V.

Sadly, Verizon (and other major service providers) have
completely
eliminated all alt.* groups from their servers. This
affects me, as
well. It may yet force me to get an extra-cost service
added.

I know I've posted this link at least a dozen times. It
is a
read
only portal for selected binaries newsgroups.

http://www.usenet-replayer.com/

First time it got my attention. I'll give it a shot.

Thanks,
Jon

Okay. It got my attention long enough to register and check
for the
group, alt.binaries.schematics.electronic. It doesn't appear
on their
list. Besides, they don't support NNTP and would be quite
difficult to make use of, if I understand what this means.

In short, it doesn't look usable for this purpose because it
doesn't
include the group. And it doesn't look usable, more
generally, because the mechanism (emailing every message, or
every message of a thread) isn't a means I would willingly
choose.

that's strange, because I've used it when the Earthlink news
farm was
dying. It is like Google groups, except it is a read only
portal. I
used it when someone mentioned a binary file on the group. The
propogation is slow, but most binaries from the group do end up
there.

http://www.usenet-replayer.com/groups/alt.binaries.schematics.electronic.html

Thanks. What I did before was to go to the main page at which
you referred me and then clicked on "get the USENET messages"
link. That took me to:

http://www.usenet-replayer.com/sign_up_feed.html

I then went through the process of signing up. They sent me an
email,
which I saved and edited into an HTML page. Loaded that, then
clicked
on the "Feed On" button. (I gather they allow me to sign up for
10
different groups.) When I clicked that JAVA link, it set me up
on a page where I could ask it to display the ALT groups I might
want to
include in my 10. alt.binaries.schematics.electronic wasn't in
the list.

What you've shown me is something different. It appears to be a
bit
strange. I'm struggling with the format, which appears to only
be the
pictures and no text bodies when messages don't include
pictures. If so, that means I may be able to access pictures
this way but not
comments sent to the group about them. Threading seems... well,
I'm
not seeing how, yet. It looks as though I may be able to pick
up on
some pictures this way, though. If I'm quick about it...
otherwise I may have to weed through pages and hope that my eye
can pick out what I'm looking for in the thumbnails.

Perhaps they don't include alt.binaries.schematics.electronic in
their emailing service, but do offer a web page with
pictures-only component from the group?

Jon

Google for binary news server - there's some freebies listed.

I did, some time ago. Finding a good NNTP server that includes a
binary newsgroup like alt.binaries.schematics.electronic was a "no
show." I spent the spare time of a few days on it. Not looking
forward to that, again. Especially, if someone has a specific
idea on hand that does NNTP for that group in particular.

Of course, when I get a strong enough interest to push the time
envelop out some more in the future, I'll take another shot at it.

But for now, yeah. Been there, done that, came up zero.

Jon

One I clicked on installed as server name: 202.177.16.1321 it seems
to work and carries alt.binaries,schematics.electronic

Ian. Would you like to correct that ip 202.177.16.??? I guessing
its
132. Since that responds with "Operation in Progress"

Hehe. 1321 is indeed impossible -- at least with the traditional
system which allows only up to 255.

Jon

Here's the right number again - 121
Click to expand...
Thanks. That one works ! Its a bit slow but its got the
alt.binaries.schematics.electronic group. I also got the attached pdf.
Good one.

--
Best Regards:
Baron.
 
"Michael A. Terrell" <mike.terrell@earthlink.net> wrote in message
news:t5udnfAB9ZEXGbDXnZ2dnUVZ_rydnZ2d@earthlink.com...
ian field wrote:

One I clicked on installed as server name: 202.177.16.1321 it seems to
work
and carries alt.binaries,schematics.electronic


202.177.16.132 is a Hong Kong IP address.
Click to expand...
My fingers are fraying about the edges so I clipped the 3 key at the same
time as the 2

The correct number is 202.177.16.121

What do you use to identify IP addresses?
 
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