Driver to drive?

[Ken S. Tucker]

On Oct 3, 8:59 am, krw <k...@att.bizzzzzzzzzzz> wrote:

On Sat, 3 Oct 2009 08:42:03 -0700 (PDT), "Ken S. Tucker"



dynam...@vianet.on.ca> wrote:
On Oct 2, 4:46 pm, krw <k...@att.bizzzzzzzzzzz> wrote:
On Thu, 1 Oct 2009 08:49:30 -0700 (PDT), "Ken S. Tucker"

dynam...@vianet.on.ca> wrote:
On Sep 25, 4:58 pm, Too_Many_Tools <too_many_to...@yahoo.com> wrote:
If you were going to equipt a home test bench today for both analog
and digital work, what test equipment would you choose and why?
TMT

Two 4'x8' sheets of descent plywood with a chair on rollers, 16'
operational length, then a comfy chesterfield and a coffee table
for rest and drinks for consultants and friends, indoor-out carpet.
Me, I go 8' for digital and 8' right for analog, and 8' for the dump,
for flexability. I currently have 24' set in a U shape, 8x8x8, but
not all 4' wide, and includes my office and notes.

I find anything over about 30" deep is a waste of space. I'd rather
have the floor space (for perhaps a scope cart). Other than that, I
too prefer the 'L' or 'U' layout.

Yeah, somethings like scopes and CRT's (TV's) can easily be 24"
deep, I also used the back part of the bench for boxed stuff I didn't
use much.

Dump the old power hogs. ;-) Test equipment is cheap. Floor space
isn't. You can't reach back 4' so that space is wasted. The stuff
would be better on the floor under or on shelves over.

Plywood is too thin for benches. Solid core doors are pretty cheap
and make very solid bench tops. If you're a little richer, Ikea sells
Birch, Oak, and Beech solid butcher block slabs pretty cheap, too. I
just bought a small one to replace the extension table on my cabinet
saw. I'll replace all my door table tops over the next year or so.

I'm ok with 3/4" good one side fir bench top, it varathanes nicely.
I lucked out when a restaurant replaced it's table tops that where
a nice arbrite for the cost of transportation.

Good grief. If your test equipment is that old (read: heavy), it'll
end up on the floor on such a rickety bench. 3/4" ply is strong on
edge, for cabinets but isn't strong at all in the 'Z' axis. You'll
need too much support under it to bother. Solid core (not the cheap
luan crap) doors will easily span 5' without center support.

I use 30" as a rule of thumb because that's all I can comfortably
reach. Anything beyond that is wasted. I also used to use 3/4" ply
(two layers - one is *not* enough) for tables, but found the rear part
to be useless. I built a desk out of a 36" door once. That too was
too deep to be of use, hence my limit of 30". 30" desks/benches work
out quite well. Notice that 30" is about the limit for commercial
products.

I hear ya, but we're getting subjective, I have long arms, my 34" deep
desk is too small for me., but thanks cuz now I can see I can add a
addition.
Ken

 

[JosephKK]

On Fri, 02 Oct 2009 11:51:54 -0700, Joerg <invalid@invalid.invalid>
wrote:

Nico Coesel wrote:
Joerg <invalid@invalid.invalid> wrote:

Nico Coesel wrote:
Joerg <invalid@invalid.invalid> wrote:

JosephKK wrote:
On Tue, 29 Sep 2009 20:00:49 -0700, John Larkin
jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:

20 years away from the lab and i don't remember what is good stuff any
more. The stuff must be functional, but 20+ year old stuff is quite
acceptable. For computer interactivity i expect to buy/use USB to
GPIB converter(s). Serial is acceptable as well.

My proper email address is in the headers. I have an objection to
dealing with e-prey or preypal myself.
Unfortunately EBay has monopolized the market for 2nd hand, they are
almost like Walmart. So they call the shots, and thus also the fee levels.

The 2465 is a very good choice, this is the scope I always recommend to
clients whom I feel are in dire need of a "real" scope. Can't go wrong.
But remember that those things can be very tired.
I bet the Lecroy LH314H (rebranded Iwatsu SS-7847A) is just as good as
the 2465 and more recent. Sometimes they come quite cheap on Ebay.

Got a link? Search engine didn't find it. So far I was less than
impressed with LeCroy scopes but maybe they've got a gem somewhere. The
epitome of ghastliness are Windows-based scopes ... yuck.

The is an all analog scope (at least the measurement part) and its not
made by Lecroy. Its the first one on this page:

http://www.iti.iwatsu.co.jp/en/products/ss/ss_top_e.html


Ok, but that ain't LeCroy. Thanks for the link though, have bookmarked
it because there will come a point where I am still recommending Tek
2465 scopes to clients but the supply will have shriveled up. They
(unfortunatly) don't make'em like they used to.

About us$ 8000 new, probes extra it seems. Nor have i ever heard any
reason to seriously doubt Iwatsu spec's.

 

[Michael A. Terrell]

John Larkin wrote:

Too much cheap surplus stuff on ebay, too. I'd love to do a cheapish
USB TDR, but there's probably no good market.

Target the CATV and telephone installer markets. Something they can
use with a laptop should sell

What would be nice is a four channel TDR to test ethernet cabling.
That would show proper wiring pattern and cable condition. Four
differential outputs to test the twisted pairs, and a 4*2 input mux to
select each pair in turn. The ability to drive each pair separately
would allow testing for crosstalk, as well.

The ability to save or print the data on an installation would make it
a lot easier to troubleshoot, later on.


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

 

[Joerg]

JosephKK wrote:

On Fri, 02 Oct 2009 11:51:54 -0700, Joerg <invalid@invalid.invalid
wrote:

Nico Coesel wrote:
Joerg <invalid@invalid.invalid> wrote:

Nico Coesel wrote:
Joerg <invalid@invalid.invalid> wrote:

JosephKK wrote:
On Tue, 29 Sep 2009 20:00:49 -0700, John Larkin
jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:

20 years away from the lab and i don't remember what is good stuff any
more. The stuff must be functional, but 20+ year old stuff is quite
acceptable. For computer interactivity i expect to buy/use USB to
GPIB converter(s). Serial is acceptable as well.

My proper email address is in the headers. I have an objection to
dealing with e-prey or preypal myself.
Unfortunately EBay has monopolized the market for 2nd hand, they are
almost like Walmart. So they call the shots, and thus also the fee levels.

The 2465 is a very good choice, this is the scope I always recommend to
clients whom I feel are in dire need of a "real" scope. Can't go wrong.
But remember that those things can be very tired.
I bet the Lecroy LH314H (rebranded Iwatsu SS-7847A) is just as good as
the 2465 and more recent. Sometimes they come quite cheap on Ebay.

Got a link? Search engine didn't find it. So far I was less than
impressed with LeCroy scopes but maybe they've got a gem somewhere. The
epitome of ghastliness are Windows-based scopes ... yuck.
The is an all analog scope (at least the measurement part) and its not
made by Lecroy. Its the first one on this page:

http://www.iti.iwatsu.co.jp/en/products/ss/ss_top_e.html

Ok, but that ain't LeCroy. Thanks for the link though, have bookmarked
it because there will come a point where I am still recommending Tek
2465 scopes to clients but the supply will have shriveled up. They
(unfortunatly) don't make'em like they used to.

About us$ 8000 new, probes extra it seems. Nor have i ever heard any
reason to seriously doubt Iwatsu spec's.

AFAIK Iwatsu has a good reputation. But a Tek 2465 from Ebay would only
be around $500, plus possibly a new round of knobs for another $100 or
so, plus a couple hours of sweat equity. The delay-trigger shifter on
those things is kind of wimpy and its plastic gets brittle. Almost the
best analog scopes since sliced bread but on the mechanics they could
have done better.

--
Regards, Joerg

http://www.analogconsultants.com/

"gmail" domain blocked because of excessive spam.
Use another domain or send PM.

 

[ratman]

On Sat, 26 Sep 2009 16:47:57 -0700 (PDT), George
<quinton.lyon@gmail.com> wrote:

I measured some 1206 SMD COG caps, 1nF 50V, over temperature, Very

Ceramics as big as 1206 can be subject to damage from board flexing,
especially if the board is large.

stable -40 to +90C, well within spec of 5%, I got about 1%. The caps
were slodered to thin flying leads.

Next test was on a board, things are a lot worse, most made expansion
the spec but only just. The problem we had already identified as board
expansion stressing the caps.

My question is how to use caps on real boards, who knows how many
other tiny smd parts are experiencing the same problems?

Thinner boards
Strategically drilled holes,
Raisinig the caps slightly to reduce leverage

Any known to work methods?

G

 

[Too_Many_Tools]

On Oct 4, 3:38 pm, krw <k...@att.bizzzzzzzzzzz> wrote:

On Sun, 4 Oct 2009 13:33:10 -0700 (PDT), Too_Many_Tools





too_many_to...@yahoo.com> wrote:
On Oct 3, 10:59 am, krw <k...@att.bizzzzzzzzzzz> wrote:
On Sat, 3 Oct 2009 08:42:03 -0700 (PDT), "Ken S. Tucker"

dynam...@vianet.on.ca> wrote:
On Oct 2, 4:46 pm, krw <k...@att.bizzzzzzzzzzz> wrote:
On Thu, 1 Oct 2009 08:49:30 -0700 (PDT), "Ken S. Tucker"

dynam...@vianet.on.ca> wrote:
On Sep 25, 4:58 pm, Too_Many_Tools <too_many_to...@yahoo.com> wrote:
If you were going to equipt a home test bench today for both analog
and digital work, what test equipment would you choose and why?
TMT

Two 4'x8' sheets of descent plywood with a chair on rollers, 16'
operational length, then a comfy chesterfield and a coffee table
for rest and drinks for consultants and friends, indoor-out carpet..
Me, I go 8' for digital and 8' right for analog, and 8' for the dump,
for flexability.  I currently have 24' set in a U shape, 8x8x8, but
not all 4' wide, and includes my office and notes.

I find anything over about 30" deep is a waste of space. I'd rather
have the floor space (for perhaps a scope cart).  Other than that, I
too prefer the 'L' or 'U' layout.

Yeah, somethings like scopes and CRT's (TV's) can easily be 24"
deep, I also used the back part of the bench for boxed stuff I didn't
use much.

Dump the old power hogs. ;-)  Test equipment is cheap.  Floor space
isn't.  You can't reach back 4' so that space is wasted.  The stuff
would be better on the floor under or on shelves over.  

Plywood is too thin for benches.  Solid core doors are pretty cheap
and make very solid bench tops.  If you're a little richer, Ikea sells
Birch, Oak, and Beech solid butcher block slabs pretty cheap, too.  I
just bought a small one to replace the extension table on my cabinet
saw.  I'll replace all my door table tops over the next year or so.

I'm ok with 3/4" good one side fir bench top, it varathanes nicely.
I lucked out when a restaurant replaced it's table tops that where
a nice arbrite for the cost of transportation.

Good grief.  If your test equipment is that old (read: heavy), it'll
end up on the floor on such a rickety bench.  3/4" ply is strong on
edge, for cabinets but isn't strong at all in the 'Z' axis.  You'll
need too much support under it to bother.  Solid core (not the cheap
luan crap) doors will easily span 5' without center support.

I use 30" as a rule of thumb because that's all I can comfortably
reach.  Anything beyond that is wasted.  I also used to use 3/4" ply
(two layers - one is *not* enough) for tables, but found the rear part
to be useless.  I built a desk out of a 36" door once.  That too was
too deep to be of use, hence my limit of 30".  30" desks/benches work
out quite well.  Notice that 30" is about the limit for commercial
products.- Hide quoted text -

- Show quoted text -

Test equipment is NOT cheap.
Show us otherwise...both digital and RF.

Folks here have given *many* examples of cheap, and good, stuff
available on eBay.  With the economy as it is, now is a perfect time
to get rid of that crappy old shit.  Do try to keep up.- Hide quoted text -

- Show quoted text -

LOL...I do.

Do you always move your lips when you type?

Why don't you give us some examples instead of being a smartass?

TMT

 

[MooseFET]

On Oct 5, 8:32 am, "Michael A. Terrell" <mike.terr...@earthlink.net>
wrote:

John Larkin wrote:

Too much cheap surplus stuff on ebay, too. I'd love to do a cheapish
USB TDR, but there's probably no good market.

   Target the CATV and telephone installer markets.  Something they can
use with a laptop should sell

Ideally, it shouldn't need the laptop to do the check. It should
charge its self from the USB.

It should have a "cable active" light on it.

There is enough POE systems to make a DC voltage measurement a good
idea.

It should be defended against mains voltage on the wires. I say this
from sad experience with an RS-232 cable and a chassis that got hot
somehow.

  What would be nice is a four channel TDR to test ethernet cabling.
That would show proper wiring pattern and cable condition.  Four
differential outputs to test the twisted pairs, and a 4*2 input mux to
select each pair in turn.  The ability to drive each pair separately
would allow testing for crosstalk, as well.

  The ability to save or print the data on an installation would make it
a lot easier to troubleshoot, later on.

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

 

[Archimedes' Lever]

On Mon, 5 Oct 2009 21:32:17 -0700 (PDT), Too_Many_Tools
<too_many_tools@yahoo.com> wrote:

LOL...I do.

Do you always move your lips when you type?

Why don't you give us some examples instead of being a smartass?

TMT

Why don't you fuck off instead of trolling all the real users of these
groups. You are ab-so-fucking-lutely pathetic, boy.

 

[Too_Many_Tools]

On Oct 6, 5:52 pm, Archimedes' Lever <OneBigLe...@InfiniteSeries.Org>
wrote:

On Mon, 5 Oct 2009 21:32:17 -0700 (PDT), Too_Many_Tools

too_many_to...@yahoo.com> wrote:
LOL...I do.

Do you always move your lips when you type?

Why don't you give us some examples instead of being a smartass?

TMT

 Why don't you fuck off instead of trolling all the real users of these
groups.  You are ab-so-fucking-lutely pathetic, boy.

LOL...I love you too.

TMT

 

[krw]

On Mon, 5 Oct 2009 21:32:17 -0700 (PDT), Too_Many_Tools
<too_many_tools@yahoo.com> wrote:

On Oct 4, 3:38 pm, krw <k...@att.bizzzzzzzzzzz> wrote:
On Sun, 4 Oct 2009 13:33:10 -0700 (PDT), Too_Many_Tools





too_many_to...@yahoo.com> wrote:
On Oct 3, 10:59 am, krw <k...@att.bizzzzzzzzzzz> wrote:
On Sat, 3 Oct 2009 08:42:03 -0700 (PDT), "Ken S. Tucker"

dynam...@vianet.on.ca> wrote:
On Oct 2, 4:46 pm, krw <k...@att.bizzzzzzzzzzz> wrote:
On Thu, 1 Oct 2009 08:49:30 -0700 (PDT), "Ken S. Tucker"

dynam...@vianet.on.ca> wrote:
On Sep 25, 4:58 pm, Too_Many_Tools <too_many_to...@yahoo.com> wrote:
If you were going to equipt a home test bench today for both analog
and digital work, what test equipment would you choose and why?
TMT

Two 4'x8' sheets of descent plywood with a chair on rollers, 16'
operational length, then a comfy chesterfield and a coffee table
for rest and drinks for consultants and friends, indoor-out carpet.
Me, I go 8' for digital and 8' right for analog, and 8' for the dump,
for flexability.  I currently have 24' set in a U shape, 8x8x8, but
not all 4' wide, and includes my office and notes.

I find anything over about 30" deep is a waste of space. I'd rather
have the floor space (for perhaps a scope cart).  Other than that, I
too prefer the 'L' or 'U' layout.

Yeah, somethings like scopes and CRT's (TV's) can easily be 24"
deep, I also used the back part of the bench for boxed stuff I didn't
use much.

Dump the old power hogs. ;-)  Test equipment is cheap.  Floor space
isn't.  You can't reach back 4' so that space is wasted.  The stuff
would be better on the floor under or on shelves over.  

Plywood is too thin for benches.  Solid core doors are pretty cheap
and make very solid bench tops.  If you're a little richer, Ikea sells
Birch, Oak, and Beech solid butcher block slabs pretty cheap, too.  I
just bought a small one to replace the extension table on my cabinet
saw.  I'll replace all my door table tops over the next year or so.

I'm ok with 3/4" good one side fir bench top, it varathanes nicely.
I lucked out when a restaurant replaced it's table tops that where
a nice arbrite for the cost of transportation.

Good grief.  If your test equipment is that old (read: heavy), it'll
end up on the floor on such a rickety bench.  3/4" ply is strong on
edge, for cabinets but isn't strong at all in the 'Z' axis.  You'll
need too much support under it to bother.  Solid core (not the cheap
luan crap) doors will easily span 5' without center support.

I use 30" as a rule of thumb because that's all I can comfortably
reach.  Anything beyond that is wasted.  I also used to use 3/4" ply
(two layers - one is *not* enough) for tables, but found the rear part
to be useless.  I built a desk out of a 36" door once.  That too was
too deep to be of use, hence my limit of 30".  30" desks/benches work
out quite well.  Notice that 30" is about the limit for commercial
products.- Hide quoted text -

- Show quoted text -

Test equipment is NOT cheap.
Show us otherwise...both digital and RF.

Folks here have given *many* examples of cheap, and good, stuff
available on eBay.  With the economy as it is, now is a perfect time
to get rid of that crappy old shit.  Do try to keep up.- Hide quoted text -

- Show quoted text -

LOL...I do.

If you did you wouldn't act so stupid.

Do you always move your lips when you type?

Because you drool on the keyboard doesn't mean everyone does.

Why don't you give us some examples instead of being a smartass?

No one will ever accuse you of being a smart anything. Do read a

little or try eBay, even.

What a dumb shit.

 

[Ron M.]

On Oct 5, 10:41 pm, "Speeders & Drunk Drivers are MURDERERS"
<xeton2...@yahoo.com> wrote:

"Gordon" <go...@alltomyself.com> wrote in messagenews:Xns9C9A971D759E1greederxprtnet@94.75.244.51...
http://ludens.cl/Electron/chinverter/chinverter.html

Manfred has been busy adding pages to his web site.
This article tells about his troubles with a cheap
and poorly designed inverter.

You need to report these bugs to John Fools, he and his gang (Jim Tdumpson, John Lacking and the rest) claimed they can get over 10,000 Amp from this little tiny transformer:

http://ludens.cl/Electron/chinverter/08currensensor.jpg

Do you know your real problem?  Your MOSFET's are Over-rated, yup all of them.  The designers too are in the rush to claim the prize.  There is no way you can get true sine wave from your little tiny Current Transformer when you turn your Mosfet to fully on.   So much noises from American's fucking designers.......heehee..............heehee...........Shame on you..........

Go back to TPG you drunken slut. No one wants to hear from you in here.

 

[Too_Many_Tools]

On Oct 6, 10:49 pm, krw <k...@att.bizzzzzzzzzzz> wrote:

On Mon, 5 Oct 2009 21:32:17 -0700 (PDT), Too_Many_Tools





too_many_to...@yahoo.com> wrote:
On Oct 4, 3:38 pm, krw <k...@att.bizzzzzzzzzzz> wrote:
On Sun, 4 Oct 2009 13:33:10 -0700 (PDT), Too_Many_Tools

too_many_to...@yahoo.com> wrote:
On Oct 3, 10:59 am, krw <k...@att.bizzzzzzzzzzz> wrote:
On Sat, 3 Oct 2009 08:42:03 -0700 (PDT), "Ken S. Tucker"

dynam...@vianet.on.ca> wrote:
On Oct 2, 4:46 pm, krw <k...@att.bizzzzzzzzzzz> wrote:
On Thu, 1 Oct 2009 08:49:30 -0700 (PDT), "Ken S. Tucker"

dynam...@vianet.on.ca> wrote:
On Sep 25, 4:58 pm, Too_Many_Tools <too_many_to...@yahoo.com> wrote:
If you were going to equipt a home test bench today for both analog
and digital work, what test equipment would you choose and why?
TMT

Two 4'x8' sheets of descent plywood with a chair on rollers, 16'
operational length, then a comfy chesterfield and a coffee table
for rest and drinks for consultants and friends, indoor-out carpet.
Me, I go 8' for digital and 8' right for analog, and 8' for the dump,
for flexability.  I currently have 24' set in a U shape, 8x8x8, but
not all 4' wide, and includes my office and notes.

I find anything over about 30" deep is a waste of space. I'd rather
have the floor space (for perhaps a scope cart).  Other than that, I
too prefer the 'L' or 'U' layout.

Yeah, somethings like scopes and CRT's (TV's) can easily be 24"
deep, I also used the back part of the bench for boxed stuff I didn't
use much.

Dump the old power hogs. ;-)  Test equipment is cheap.  Floor space
isn't.  You can't reach back 4' so that space is wasted.  The stuff
would be better on the floor under or on shelves over.  

Plywood is too thin for benches.  Solid core doors are pretty cheap
and make very solid bench tops.  If you're a little richer, Ikea sells
Birch, Oak, and Beech solid butcher block slabs pretty cheap, too.  I
just bought a small one to replace the extension table on my cabinet
saw.  I'll replace all my door table tops over the next year or so.

I'm ok with 3/4" good one side fir bench top, it varathanes nicely..
I lucked out when a restaurant replaced it's table tops that where
a nice arbrite for the cost of transportation.

Good grief.  If your test equipment is that old (read: heavy), it'll
end up on the floor on such a rickety bench.  3/4" ply is strong on
edge, for cabinets but isn't strong at all in the 'Z' axis.  You'll
need too much support under it to bother.  Solid core (not the cheap
luan crap) doors will easily span 5' without center support.

I use 30" as a rule of thumb because that's all I can comfortably
reach.  Anything beyond that is wasted.  I also used to use 3/4" ply
(two layers - one is *not* enough) for tables, but found the rear part
to be useless.  I built a desk out of a 36" door once.  That too was
too deep to be of use, hence my limit of 30".  30" desks/benches work
out quite well.  Notice that 30" is about the limit for commercial
products.- Hide quoted text -

- Show quoted text -

Test equipment is NOT cheap.
Show us otherwise...both digital and RF.

Folks here have given *many* examples of cheap, and good, stuff
available on eBay.  With the economy as it is, now is a perfect time
to get rid of that crappy old shit.  Do try to keep up.- Hide quoted text -

- Show quoted text -

LOL...I do.

If you did you wouldn't act so stupid.

Do you always move your lips when you type?

Because you drool on the keyboard doesn't mean everyone does.

Why don't you give us some examples instead of being a smartass?

No one will ever accuse you of being a smart anything.  Do read a
little or try eBay, even.

What a dumb shit.- Hide quoted text -

- Show quoted text -

Gee whiz...you are making me blush.

Do I get dinner and flowers too?

TMT

 

[Too_Many_Tools]

On Sep 25, 6:58 pm, Too_Many_Tools <too_many_to...@yahoo.com> wrote:

If you were going to equipt a home test bench today for both analog
and digital work, what test equipment would you choose and why?

TMT

Thanks to everyone who contributed...postitively.

As for the trolls...when do I get my dinner and flowers? ;&lt

TMT

 

[krw]

On Wed, 7 Oct 2009 10:18:49 -0700 (PDT), Too_Many_Tools
<too_many_tools@yahoo.com> wrote:

On Oct 6, 10:49 pm, krw <k...@att.bizzzzzzzzzzz> wrote:
On Mon, 5 Oct 2009 21:32:17 -0700 (PDT), Too_Many_Tools





too_many_to...@yahoo.com> wrote:
On Oct 4, 3:38 pm, krw <k...@att.bizzzzzzzzzzz> wrote:
On Sun, 4 Oct 2009 13:33:10 -0700 (PDT), Too_Many_Tools

too_many_to...@yahoo.com> wrote:
On Oct 3, 10:59 am, krw <k...@att.bizzzzzzzzzzz> wrote:
On Sat, 3 Oct 2009 08:42:03 -0700 (PDT), "Ken S. Tucker"

dynam...@vianet.on.ca> wrote:
On Oct 2, 4:46 pm, krw <k...@att.bizzzzzzzzzzz> wrote:
On Thu, 1 Oct 2009 08:49:30 -0700 (PDT), "Ken S. Tucker"

dynam...@vianet.on.ca> wrote:
On Sep 25, 4:58 pm, Too_Many_Tools <too_many_to...@yahoo.com> wrote:
If you were going to equipt a home test bench today for both analog
and digital work, what test equipment would you choose and why?
TMT

Two 4'x8' sheets of descent plywood with a chair on rollers, 16'
operational length, then a comfy chesterfield and a coffee table
for rest and drinks for consultants and friends, indoor-out carpet.
Me, I go 8' for digital and 8' right for analog, and 8' for the dump,
for flexability.  I currently have 24' set in a U shape, 8x8x8, but
not all 4' wide, and includes my office and notes.

I find anything over about 30" deep is a waste of space. I'd rather
have the floor space (for perhaps a scope cart).  Other than that, I
too prefer the 'L' or 'U' layout.

Yeah, somethings like scopes and CRT's (TV's) can easily be 24"
deep, I also used the back part of the bench for boxed stuff I didn't
use much.

Dump the old power hogs. ;-)  Test equipment is cheap.  Floor space
isn't.  You can't reach back 4' so that space is wasted.  The stuff
would be better on the floor under or on shelves over.  

Plywood is too thin for benches.  Solid core doors are pretty cheap
and make very solid bench tops.  If you're a little richer, Ikea sells
Birch, Oak, and Beech solid butcher block slabs pretty cheap, too.  I
just bought a small one to replace the extension table on my cabinet
saw.  I'll replace all my door table tops over the next year or so.

I'm ok with 3/4" good one side fir bench top, it varathanes nicely.
I lucked out when a restaurant replaced it's table tops that where
a nice arbrite for the cost of transportation.

Good grief.  If your test equipment is that old (read: heavy), it'll
end up on the floor on such a rickety bench.  3/4" ply is strong on
edge, for cabinets but isn't strong at all in the 'Z' axis.  You'll
need too much support under it to bother.  Solid core (not the cheap
luan crap) doors will easily span 5' without center support.

I use 30" as a rule of thumb because that's all I can comfortably
reach.  Anything beyond that is wasted.  I also used to use 3/4" ply
(two layers - one is *not* enough) for tables, but found the rear part
to be useless.  I built a desk out of a 36" door once.  That too was
too deep to be of use, hence my limit of 30".  30" desks/benches work
out quite well.  Notice that 30" is about the limit for commercial
products.- Hide quoted text -

- Show quoted text -

Test equipment is NOT cheap.
Show us otherwise...both digital and RF.

Folks here have given *many* examples of cheap, and good, stuff
available on eBay.  With the economy as it is, now is a perfect time
to get rid of that crappy old shit.  Do try to keep up.- Hide quoted text -

- Show quoted text -

LOL...I do.

If you did you wouldn't act so stupid.

Do you always move your lips when you type?

Because you drool on the keyboard doesn't mean everyone does.

Why don't you give us some examples instead of being a smartass?

No one will ever accuse you of being a smart anything.  Do read a
little or try eBay, even.

What a dumb shit.- Hide quoted text -

- Show quoted text -

Gee whiz...you are making me blush.

You should. You embarrass your mother.

Do I get dinner and flowers too?

Sorry Bucko, the terminally stupid aren't my type.

 

[krw]

On Wed, 7 Oct 2009 14:58:14 -0700 (PDT), "Ken S. Tucker"
<dynamics@vianet.on.ca> wrote:

On Oct 4, 3:03 pm, krw <k...@att.bizzzzzzzzzzz> wrote:
On Sun, 4 Oct 2009 14:29:01 -0700 (PDT), "Ken S. Tucker"



dynam...@vianet.on.ca> wrote:
On Oct 3, 8:59 am, krw <k...@att.bizzzzzzzzzzz> wrote:
On Sat, 3 Oct 2009 08:42:03 -0700 (PDT), "Ken S. Tucker"

dynam...@vianet.on.ca> wrote:
On Oct 2, 4:46 pm, krw <k...@att.bizzzzzzzzzzz> wrote:
On Thu, 1 Oct 2009 08:49:30 -0700 (PDT), "Ken S. Tucker"

dynam...@vianet.on.ca> wrote:
On Sep 25, 4:58 pm, Too_Many_Tools <too_many_to...@yahoo.com> wrote:
If you were going to equipt a home test bench today for both analog
and digital work, what test equipment would you choose and why?
TMT

Two 4'x8' sheets of descent plywood with a chair on rollers, 16'
operational length, then a comfy chesterfield and a coffee table
for rest and drinks for consultants and friends, indoor-out carpet.
Me, I go 8' for digital and 8' right for analog, and 8' for the dump,
for flexability. I currently have 24' set in a U shape, 8x8x8, but
not all 4' wide, and includes my office and notes.

I find anything over about 30" deep is a waste of space. I'd rather
have the floor space (for perhaps a scope cart). Other than that, I
too prefer the 'L' or 'U' layout.

Yeah, somethings like scopes and CRT's (TV's) can easily be 24"
deep, I also used the back part of the bench for boxed stuff I didn't
use much.

Dump the old power hogs. ;-) Test equipment is cheap. Floor space
isn't. You can't reach back 4' so that space is wasted. The stuff
would be better on the floor under or on shelves over.

Plywood is too thin for benches. Solid core doors are pretty cheap
and make very solid bench tops. If you're a little richer, Ikea sells
Birch, Oak, and Beech solid butcher block slabs pretty cheap, too. I
just bought a small one to replace the extension table on my cabinet
saw. I'll replace all my door table tops over the next year or so.

I'm ok with 3/4" good one side fir bench top, it varathanes nicely.
I lucked out when a restaurant replaced it's table tops that where
a nice arbrite for the cost of transportation.

Good grief. If your test equipment is that old (read: heavy), it'll
end up on the floor on such a rickety bench. 3/4" ply is strong on
edge, for cabinets but isn't strong at all in the 'Z' axis. You'll
need too much support under it to bother. Solid core (not the cheap
luan crap) doors will easily span 5' without center support.

I use 30" as a rule of thumb because that's all I can comfortably
reach. Anything beyond that is wasted. I also used to use 3/4" ply
(two layers - one is *not* enough) for tables, but found the rear part
to be useless. I built a desk out of a 36" door once. That too was
too deep to be of use, hence my limit of 30". 30" desks/benches work
out quite well. Notice that 30" is about the limit for commercial
products.

I hear ya, but we're getting subjective, I have long arms, my 34" deep
desk is too small for me., but thanks cuz now I can see I can add a
addition.

Doors are available in standard sizes up to 36". Larger than that
they get pretty expensive. The Ikea slabs are available up to 1M. I'm
even thinking of going down from 30" to 24" for my desktops to save
even more floor space. LCD monitors don't require the same depth as
CRTs.

My side 22" bench works well, incidentally 'totes' are 24" deep and
make super drawers,

Totes? Got a picture? 24" deep drawers with a 22" top?

I cut the tops off clear plastic juice containers
and fill them up with cords, adapters and many other do hickies.

I hang spare cables over the clothes hanger bars in the "computer
room" closets. I have them arranged with the "interesting" end out so
it's easy to tell cables apart.

>Totes edge support easily.

 

[Archimedes' Lever]

On Wed, 7 Oct 2009 10:22:44 -0700 (PDT), Too_Many_Tools
<too_many_tools@yahoo.com> wrote:

On Sep 25, 6:58 pm, Too_Many_Tools <too_many_to...@yahoo.com> wrote:
If you were going to equipt a home test bench today for both analog
and digital work, what test equipment would you choose and why?

TMT

Thanks to everyone who contributed...postitively.

As for the trolls...when do I get my dinner and flowers? ;&lt

TMT

When you are six feet under, you will get flowers (maybe), and be dinner
(for certain).

As for the trolling... That moniker is yours today, retard boy.

 

[Archimedes' Lever]

On Mon, 28 Sep 2009 10:25:05 -0700, John Larkin
<jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:

On Sat, 26 Sep 2009 17:58:27 -0700, Archimedes' Lever
OneBigLever@InfiniteSeries.Org> wrote:

On Sat, 26 Sep 2009 16:52:40 -0700, John Larkin
jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:

On Sat, 26 Sep 2009 17:28:50 -0400, "Michael A. Terrell"
mike.terrell@earthlink.net> wrote:


John Larkin wrote:

There's the slideback technique: drive a comparator with RF on one
side, DC feedback on the other. Tease the DC appropriately.

I once made a slideback sampling oscilloscope, using tunnel diodes, as
my EE senior project. I won an award and had to attend a dreadful IEEE
chapter banquet and repeat it to a bunch of old-fart power engineers
who didn't understand a word I said. I described the slideback
sampling scope in this ng some years back and a certain party loved
the idea so much he later decided that he'd invented it himself.


http://store.americanmicrosemiconductor.com/diodes-tunnel-diodes.html

TDs are insanely expensive nowadays, ballpark $100. I used to get them
for a couple bucks from Allied. The fabrication process is insane, and
nobody ever modernized it.

There are some more modern planar germanium back diodes, essentially
low Ip tunnel diodes, but they're RF detectors, useless for switching.
Pity, I used to like tunnel diodes.

http://aeroflex.com/AMS/Metelics/pdfiles/MBD_Series_Planar_Back_Tunnel_Diodes.pdf

John


Try PiN diodes then.

For what? Certainly not switching, amplifying, oscillating, detection,
or mixing.

That certainly is what they get used for at 5 to 30 GHz.

There was a single-TD circuit that was an RF amp, a local oscillator,
a mixer, and an IF amp. One TD and a couple of passives would make an
FM transmitter.

The beefier td's would make a voltage step with a 22 picosecond rise
time... in 1964.

John

 

[Ken S. Tucker]

On Oct 4, 3:03 pm, krw <k...@att.bizzzzzzzzzzz> wrote:

On Sun, 4 Oct 2009 14:29:01 -0700 (PDT), "Ken S. Tucker"



dynam...@vianet.on.ca> wrote:
On Oct 3, 8:59 am, krw <k...@att.bizzzzzzzzzzz> wrote:
On Sat, 3 Oct 2009 08:42:03 -0700 (PDT), "Ken S. Tucker"

dynam...@vianet.on.ca> wrote:
On Oct 2, 4:46 pm, krw <k...@att.bizzzzzzzzzzz> wrote:
On Thu, 1 Oct 2009 08:49:30 -0700 (PDT), "Ken S. Tucker"

dynam...@vianet.on.ca> wrote:
On Sep 25, 4:58 pm, Too_Many_Tools <too_many_to...@yahoo.com> wrote:
If you were going to equipt a home test bench today for both analog
and digital work, what test equipment would you choose and why?
TMT

Two 4'x8' sheets of descent plywood with a chair on rollers, 16'
operational length, then a comfy chesterfield and a coffee table
for rest and drinks for consultants and friends, indoor-out carpet.
Me, I go 8' for digital and 8' right for analog, and 8' for the dump,
for flexability. I currently have 24' set in a U shape, 8x8x8, but
not all 4' wide, and includes my office and notes.

I find anything over about 30" deep is a waste of space. I'd rather
have the floor space (for perhaps a scope cart). Other than that, I
too prefer the 'L' or 'U' layout.

Yeah, somethings like scopes and CRT's (TV's) can easily be 24"
deep, I also used the back part of the bench for boxed stuff I didn't
use much.

Dump the old power hogs. ;-) Test equipment is cheap. Floor space
isn't. You can't reach back 4' so that space is wasted. The stuff
would be better on the floor under or on shelves over.

Plywood is too thin for benches. Solid core doors are pretty cheap
and make very solid bench tops. If you're a little richer, Ikea sells
Birch, Oak, and Beech solid butcher block slabs pretty cheap, too. I
just bought a small one to replace the extension table on my cabinet
saw. I'll replace all my door table tops over the next year or so.

I'm ok with 3/4" good one side fir bench top, it varathanes nicely.
I lucked out when a restaurant replaced it's table tops that where
a nice arbrite for the cost of transportation.

Good grief. If your test equipment is that old (read: heavy), it'll
end up on the floor on such a rickety bench. 3/4" ply is strong on
edge, for cabinets but isn't strong at all in the 'Z' axis. You'll
need too much support under it to bother. Solid core (not the cheap
luan crap) doors will easily span 5' without center support.

I use 30" as a rule of thumb because that's all I can comfortably
reach. Anything beyond that is wasted. I also used to use 3/4" ply
(two layers - one is *not* enough) for tables, but found the rear part
to be useless. I built a desk out of a 36" door once. That too was
too deep to be of use, hence my limit of 30". 30" desks/benches work
out quite well. Notice that 30" is about the limit for commercial
products.

I hear ya, but we're getting subjective, I have long arms, my 34" deep
desk is too small for me., but thanks cuz now I can see I can add a
addition.

Doors are available in standard sizes up to 36". Larger than that
they get pretty expensive. The Ikea slabs are available up to 1M. I'm
even thinking of going down from 30" to 24" for my desktops to save
even more floor space. LCD monitors don't require the same depth as
CRTs.

My side 22" bench works well, incidentally 'totes' are 24" deep and
make super drawers, I cut the tops off clear plastic juice containers
and fill them up with cords, adapters and many other do hickies.
Totes edge support easily.
Ken

 

[Ron M.]

On Oct 6, 11:28 pm, "Richard" <he...@haha.com> wrote:

"Ron M." <strmbr...@hotmail.com> wrote in messagenews:6d2f6f89-7116-4372-affc-137806b67cce@m1g2000vbi.googlegroups.com...

On Oct 5, 10:41 pm, "Speeders & Drunk Drivers are MURDERERS"

xeton2...@yahoo.com> wrote:
"Gordon" <go...@alltomyself.com> wrote in messagenews:Xns9C9A971D759E1greederxprtnet@94.75.244.51...
http://ludens.cl/Electron/chinverter/chinverter.html

Manfred has been busy adding pages to his web site.
This article tells about his troubles with a cheap
and poorly designed inverter.

You need to report these bugs to John Fools, he and his gang (Jim Tdumpson, John Lacking and the rest) claimed they can get over 10,000 Amp from this little tiny transformer:

http://ludens.cl/Electron/chinverter/08currensensor.jpg

Do you know your real problem? Your MOSFET's are Over-rated, yup all of them. The designers too are in the rush to claim the prize. There is no way you can get true sine wave from your little tiny Current Transformer when you turn your Mosfet to fully on. So much noises from American's fucking designers.......heehee..............heehee...........Shame on you.........

Go back to TPG you drunken slut. No one wants to hear from you in here.

Oh look. It's one of Judy's sock puppets. How quaint.

 

[Michael A. Terrell]

krw wrote:

Too_Many_Tools wrote:

LOL...I do.

If you did you wouldn't act so stupid.

Do you always move your lips when you type?

Because you drool on the keyboard doesn't mean everyone does.

Why don't you give us some examples instead of being a smartass?

No one will ever accuse you of being a smart anything. Do read a
little or try eBay, even.

What a dumb shit.

TMT is a well known troll on news:rec.crafts.metalworking.


--
The movie 'Deliverance' isn't a documentary!