R
Richard Henry
Guest
On Oct 19, 11:38 am, UltimatePatriot
<UltimatePatr...@thebestcountry.org> wrote:
<UltimatePatr...@thebestcountry.org> wrote:
Clueless.
M
Michael A. Terrell
Guest
John Fields wrote:
You would think they already have a know it all janitor.
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There are two kinds of people on this earth:
The crazy, and the insane.
The first sign of insanity is denying that you're crazy.
You would think they already have a know it all janitor.
--
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There are two kinds of people on this earth:
The crazy, and the insane.
The first sign of insanity is denying that you're crazy.
J
John Fields
Guest
On Sun, 19 Oct 2008 18:18:18 +0100, Eeyore
<rabbitsfriendsandrelations@hotmail.com> wrote:
As have I, while you guys keep struggling to lower THD to limits which
are so far beyond the threshold of audibility that the point of the
exercise becomes ludicrous.
JF
<rabbitsfriendsandrelations@hotmail.com> wrote:
---
As have I, while you guys keep struggling to lower THD to limits which
are so far beyond the threshold of audibility that the point of the
exercise becomes ludicrous.
JF
J
John Fields
Guest
On Sun, 19 Oct 2008 20:07:08 GMT, "Kevin Aylward"
<kaExtractThis@kevinaylward.co.uk> wrote:
Upon whom?
JF
<kaExtractThis@kevinaylward.co.uk> wrote:
---
Upon whom?
JF
J
John Fields
Guest
On Sun, 19 Oct 2008 17:53:36 +0100, Eeyore
<rabbitsfriendsandrelations@hotmail.com> wrote:
Ah, but since you don't hold the keys to the kingdom I might come up
with something even better, just for the fun of kicking your ass.
JF
<rabbitsfriendsandrelations@hotmail.com> wrote:
---
Ah, but since you don't hold the keys to the kingdom I might come up
with something even better, just for the fun of kicking your ass.
JF
M
mpm
Guest
On Oct 19, 2:38�pm, UltimatePatriot
<UltimatePatr...@thebestcountry.org> wrote:
https://www.democrats.org/page/contribute/ChangeWeNeed
Unless you're the type who welshes on bets.... ?
<UltimatePatr...@thebestcountry.org> wrote:
You can also pay by Credit Card.
https://www.democrats.org/page/contribute/ChangeWeNeed
Unless you're the type who welshes on bets.... ?
M
mpm
Guest
On Oct 18, 11:03�am, MooseFET <kensm...@rahul.net> wrote:
While it may not have been envisioned at the dawn of radio, signals
these days cross international borders, talk to submarines around the
world, even satellites flying high overhead.
Spectrum is finite, and for practical reasons, nations must engage in
treaties to utilize this resource efficiently and effectively. US
States are not able to execute these treaties, and thus, the FCC is
federalized. In other words, the States-rights argument is a non-
starter.
But again, when it comes to manufacturing equipment, regulating
safety, developing standards (i.e., DTV, cellular, etc..), there is a
very strong tie-in to commerce. So, having FCC under the Dept of
Commerce probably makes sense. (Even if you don't buy the "crossing
State lines" issue..) I mean, it makes more sense than say, putting
it under the Dept of Agriculture.
-mpm
Well, you have to put the agency somewhere.
While it may not have been envisioned at the dawn of radio, signals
these days cross international borders, talk to submarines around the
world, even satellites flying high overhead.
Spectrum is finite, and for practical reasons, nations must engage in
treaties to utilize this resource efficiently and effectively. US
States are not able to execute these treaties, and thus, the FCC is
federalized. In other words, the States-rights argument is a non-
starter.
But again, when it comes to manufacturing equipment, regulating
safety, developing standards (i.e., DTV, cellular, etc..), there is a
very strong tie-in to commerce. So, having FCC under the Dept of
Commerce probably makes sense. (Even if you don't buy the "crossing
State lines" issue..) I mean, it makes more sense than say, putting
it under the Dept of Agriculture.
-mpm
M
mpm
Guest
On Oct 19, 12:47�pm, krw <k...@att.bizzzzzzzzzz> wrote:
MRI machines and microwave ovens are two RF examples that come to
mind.
Both are enclosed. Both are regulated.
That said, I understood your point.
Technically, that statement is not true.
MRI machines and microwave ovens are two RF examples that come to
mind.
Both are enclosed. Both are regulated.
That said, I understood your point.
M
mpm
Guest
On Oct 19, 3:28�pm, "Jon Slaughter" <Jon_Slaugh...@Hotmail.com> wrote:
But you can try going the "sample" route with them, and/or find out if
they sell to any distributors or value-added resellers, etc...
Anyone in manufacturing these days deals (at least in part) with the
Chinese or India.
No big deal. Just find a reputable company.
No. And be advised they usually deal ONLY in high-volume.
But you can try going the "sample" route with them, and/or find out if
they sell to any distributors or value-added resellers, etc...
Anyone in manufacturing these days deals (at least in part) with the
Chinese or India.
No big deal. Just find a reputable company.
M
mpm
Guest
On Oct 19, 3:27�pm, "Jon Slaughter" <Jon_Slaugh...@Hotmail.com> wrote:
results tremendously.
There was a company I used once before (I'm trying desparately to
remember their name....).
They make a lot of fiber-optic safety interlock switch stuff.
But they have discrete lenses available. Began with an "S", I
think..?
It'll come to me, or someone here will know them. Big company. USA.
I actually have a box full of misc plastic fiber optics, parts, fiber
reels, etc...
If I knew where it was in the warehouse, I'd ship it to you my regular
discount offer price:
That being, the cost of UPS shipping plus a single bottle of a decent
Belgian Ale! Ha!!
I wouldn't write off fiber optic until you marry it up with a flush
mount lens of some sort.
I think you will be very impressed. Also, just to mention, the human
eye is much more sensitive to green than red. (You'll have to play
with color/luminosity issues, even with LED's)
And one word of caution, if you're handling glass fiber-optic, brush
up on fiber safety first. You don't want that stuff in your skin or
eyes. (And depending on what you're driving the fiber with -- you
don't want to perform amateur RK surgery either.. Though I'm sure
you're driving with LED's and not collimated lasers, etc...
Besides, I don't think I've ever seen glass fiber at the cross-
sectional diameter your project requries, but you never know. Just be
aware you can't pluck glass fiber out with tweezers. You'll end up in
the E.R.
-mpm
A lens (note, not spelled "lenz"?) will improve the fiber-optic
results tremendously.
There was a company I used once before (I'm trying desparately to
remember their name....).
They make a lot of fiber-optic safety interlock switch stuff.
But they have discrete lenses available. Began with an "S", I
think..?
It'll come to me, or someone here will know them. Big company. USA.
I actually have a box full of misc plastic fiber optics, parts, fiber
reels, etc...
If I knew where it was in the warehouse, I'd ship it to you my regular
discount offer price:
That being, the cost of UPS shipping plus a single bottle of a decent
Belgian Ale! Ha!!
I wouldn't write off fiber optic until you marry it up with a flush
mount lens of some sort.
I think you will be very impressed. Also, just to mention, the human
eye is much more sensitive to green than red. (You'll have to play
with color/luminosity issues, even with LED's)
And one word of caution, if you're handling glass fiber-optic, brush
up on fiber safety first. You don't want that stuff in your skin or
eyes. (And depending on what you're driving the fiber with -- you
don't want to perform amateur RK surgery either..
Though I'm sureyou're driving with LED's and not collimated lasers, etc...
Besides, I don't think I've ever seen glass fiber at the cross-
sectional diameter your project requries, but you never know. Just be
aware you can't pluck glass fiber out with tweezers. You'll end up in
the E.R.
-mpm
J
John Larkin
Guest
On Sun, 19 Oct 2008 20:07:08 GMT, "Kevin Aylward"
<kaExtractThis@kevinaylward.co.uk> wrote:
somewhere in its title.
How about this?
http://www.highlandtechnology.com/DSS/T860DS.html
Next rev I'll fix that little undershoot.
John
<kaExtractThis@kevinaylward.co.uk> wrote:
Oh, my mistake. I somehow imagined that this thread had "audio"
somewhere in its title.
How about this?
http://www.highlandtechnology.com/DSS/T860DS.html
Next rev I'll fix that little undershoot.
John
J
John Larkin
Guest
On Sun, 19 Oct 2008 20:07:08 GMT, "Kevin Aylward"
<kaExtractThis@kevinaylward.co.uk> wrote:
If adding a gate driver per fet makes the fet bandwidth substantially
greater, why doesn't that reduce phase shift and make the overall loop
more stable, or allow a wider bandwidth for a given phase margin?
That's exactly what it does.
And it makes the fet transfer curve look linear, which also helps
stability.
previous pole inherent to the capacitances of a heap of fets driven by
some wimpy resistive source. Increasing the bandwidth of the output
stage - the serious speed problem - by, say, 20:1 has got to help the
overall loop.
There's no free lunch here: we're adding GBW, and paying for it. But
not much, since opamps are cheap.
You see, I actually *build* my designs.
John
<kaExtractThis@kevinaylward.co.uk> wrote:
If adding a gate driver per fet makes the fet bandwidth substantially
greater, why doesn't that reduce phase shift and make the overall loop
more stable, or allow a wider bandwidth for a given phase margin?
That's exactly what it does.
And it makes the fet transfer curve look linear, which also helps
stability.
Not if the "additional" pole is at a much higher frequency than the
previous pole inherent to the capacitances of a heap of fets driven by
some wimpy resistive source. Increasing the bandwidth of the output
stage - the serious speed problem - by, say, 20:1 has got to help the
overall loop.
There's no free lunch here: we're adding GBW, and paying for it. But
not much, since opamps are cheap.
Been there, done that, sold and selling a lot of the results.
You see, I actually *build* my designs.
John
A
Archimedes' Lever
Guest
On Sun, 19 Oct 2008 13:29:17 -0700 (PDT), mpm <mpmillard@aol.com> wrote:
Both radiate, dipshit. THAT is NOT enclosed.
Both radiate, dipshit. THAT is NOT enclosed.
J
JosephKK
Guest
On Sat, 18 Oct 2008 13:15:17 -0500, "Jon Slaughter"
<Jon_Slaughter@Hotmail.com> wrote:
<Jon_Slaughter@Hotmail.com> wrote:
Is it glass or plastic?osr@uakron.edu> wrote in message
news:cda72500-4a0e-478b-9b8e-8ce12a8898f0@c60g2000hsf.googlegroups.com...
On Oct 18, 12:34 am, "Jon Slaughter" <Jon_Slaugh...@Hotmail.com
wrote:
"mpm" <mpmill...@aol.com> wrote in message
news:f3df757a-fd95-428f-9796-b1defd671db5@u65g2000hsc.googlegroups.com...
On Oct 17, 11:54?pm, "Jon Slaughter" <Jon_Slaugh...@Hotmail.com
wrote:
Any help would be appreciated,
Jon
Problem solved. (Depending on how comfortable you are thinking outside
the box..
I'll email it to you....
-mpm
-----
Ok... lets hope it is the solution
Right now I just hot glued the led in the hole.. it works nice except it I
can't do it on the guitar neck with good results(actually it probably will
work ok but rather use something else). Of course the colors are not mixed
great and I still have the wiring problem(it can be done but is tedious).
The led pipe stuff seems like the way to go... only if I could actually
find
some that small.
Thanks... I'll reply to the email once I get it if I have any questions,
Jon
3 mm plastic fiber optic is cheap, easy to work with , and a short
length contact coupled to your multicolor led will work fine. So will
a short piece of acrylic rod.
Steve Roberts
---------
Will this give approximately the same effect as "lifting" the led or will it
reduce the viewing angle signficiantly?
Actually I do have some fiber optic cable from a small "kit" I brought once.
Is the stuff easy to cut or will it shatter?
J
Joerg
Guest
Jan Panteltje wrote:
That has been around since a long time. Our church uses wireless mikes
as a secondary UHF user. Of course we made sure that this doesn't bother
anyone. Love thy neighbor
DTV is a whole 'nother ballgame. It falls apart every other night around
here. And when it goes then most of the channels turn into a blocky
Picasso, not just one.
--
Regards, Joerg
http://www.analogconsultants.com/
"gmail" domain blocked because of excessive spam.
Use another domain or send PM.
That has been around since a long time. Our church uses wireless mikes
as a secondary UHF user. Of course we made sure that this doesn't bother
anyone. Love thy neighbor
DTV is a whole 'nother ballgame. It falls apart every other night around
here. And when it goes then most of the channels turn into a blocky
Picasso, not just one.
--
Regards, Joerg
http://www.analogconsultants.com/
"gmail" domain blocked because of excessive spam.
Use another domain or send PM.
J
Jon Slaughter
Guest
"mpm" <mpmillard@aol.com> wrote in message
news:f51614ef-03e3-4746-b329-8decbc42bdae@t54g2000hsg.googlegroups.com...
On Oct 19, 3:27?pm, "Jon Slaughter" <Jon_Slaugh...@Hotmail.com> wrote:
results tremendously.
There was a company I used once before (I'm trying desparately to
remember their name....).
-------
What I found was led pipes and lenses. This is really what I need but I
can't find them at the proper size. (They are all for the large TH like leds
or large SMT)
====
They make a lot of fiber-optic safety interlock switch stuff.
But they have discrete lenses available. Began with an "S", I
think..?
It'll come to me, or someone here will know them. Big company. USA.
------
I don't know. I haven't dealt with fiber optic. It seems like my solution
is probably the best even if I can't work out the kinks perfectly, at least
for getting a prototype done. Although I'd rather get it right the first
time if it's not too much trouble.
I've already ordered 200 of the rgb led's and hopefully it won't be too hard
to get a pcb for them going. I got a 100$ fender squire comming. Hopefully
I'll be able to start on the circuitry sometime soon. Shouldn't be too
difficult but going to be hard to integrate into the guitar because enough
surface area needs to be left so the neck can stick well and if it needs to
be removed again it doesn't ruin the circuit. I think it shouldn't be that
bit of a challenge though when I get too it.
=======
I actually have a box full of misc plastic fiber optics, parts, fiber
reels, etc...
If I knew where it was in the warehouse, I'd ship it to you my regular
discount offer price:
That being, the cost of UPS shipping plus a single bottle of a decent
Belgian Ale! Ha!!
-----
That would be nice But I wonder if the Belgian Ale is good for you?
====
I wouldn't write off fiber optic until you marry it up with a flush
mount lens of some sort.
I think you will be very impressed. Also, just to mention, the human
eye is much more sensitive to green than red. (You'll have to play
with color/luminosity issues, even with LED's)
----
I've been looking for lenses but it seems they are all too big. The fresnel
type seem to be what I want but I can't find them at the size I need(at most
about 2mm).
Hell, I'm having a hard time finding cheap fiber optic with a core of about
1.5-2mm ;/ I'm going to hit the local stores tomorrow and see if I can't
find any in a hobby shop.
======
And one word of caution, if you're handling glass fiber-optic, brush
up on fiber safety first. You don't want that stuff in your skin or
eyes. (And depending on what you're driving the fiber with -- you
don't want to perform amateur RK surgery either.. Though I'm sure
you're driving with LED's and not collimated lasers, etc...
Besides, I don't think I've ever seen glass fiber at the cross-
sectional diameter your project requries, but you never know. Just be
aware you can't pluck glass fiber out with tweezers. You'll end up in
the E.R.
------
Really? I imagine the silica dust is harmful to the lungs but that develops
over long term exposure? Yeah, I'm not using lasers or anything but simple
led's so I don't have to worry about that. Mostly I just need to cut the
fiber optics to size. (used a razor blade to cut what I had and it worked
fine although the end wasn't perfectly smooth and flat)
Do you know if I were to strip the fiber optic's jacket off and insert it in
the wood if the wood will change the refraction causing it to be less
efficient? Or if the wood will some how weaken the fiber optic? (although
that shouldn't matter too much as it's short and not being moved once in
place)
news:f51614ef-03e3-4746-b329-8decbc42bdae@t54g2000hsg.googlegroups.com...
On Oct 19, 3:27?pm, "Jon Slaughter" <Jon_Slaugh...@Hotmail.com> wrote:
A lens (note, not spelled "lenz"?) will improve the fiber-optic
results tremendously.
There was a company I used once before (I'm trying desparately to
remember their name....).
-------
What I found was led pipes and lenses. This is really what I need but I
can't find them at the proper size. (They are all for the large TH like leds
or large SMT)
====
They make a lot of fiber-optic safety interlock switch stuff.
But they have discrete lenses available. Began with an "S", I
think..?
It'll come to me, or someone here will know them. Big company. USA.
------
I don't know. I haven't dealt with fiber optic. It seems like my solution
is probably the best even if I can't work out the kinks perfectly, at least
for getting a prototype done. Although I'd rather get it right the first
time if it's not too much trouble.
I've already ordered 200 of the rgb led's and hopefully it won't be too hard
to get a pcb for them going. I got a 100$ fender squire comming. Hopefully
I'll be able to start on the circuitry sometime soon. Shouldn't be too
difficult but going to be hard to integrate into the guitar because enough
surface area needs to be left so the neck can stick well and if it needs to
be removed again it doesn't ruin the circuit. I think it shouldn't be that
bit of a challenge though when I get too it.
=======
I actually have a box full of misc plastic fiber optics, parts, fiber
reels, etc...
If I knew where it was in the warehouse, I'd ship it to you my regular
discount offer price:
That being, the cost of UPS shipping plus a single bottle of a decent
Belgian Ale! Ha!!
-----
That would be nice
But I wonder if the Belgian Ale is good for you? ====
I wouldn't write off fiber optic until you marry it up with a flush
mount lens of some sort.
I think you will be very impressed. Also, just to mention, the human
eye is much more sensitive to green than red. (You'll have to play
with color/luminosity issues, even with LED's)
----
I've been looking for lenses but it seems they are all too big. The fresnel
type seem to be what I want but I can't find them at the size I need(at most
about 2mm).
Hell, I'm having a hard time finding cheap fiber optic with a core of about
1.5-2mm ;/ I'm going to hit the local stores tomorrow and see if I can't
find any in a hobby shop.
======
And one word of caution, if you're handling glass fiber-optic, brush
up on fiber safety first. You don't want that stuff in your skin or
eyes. (And depending on what you're driving the fiber with -- you
don't want to perform amateur RK surgery either..
Though I'm sureyou're driving with LED's and not collimated lasers, etc...
Besides, I don't think I've ever seen glass fiber at the cross-
sectional diameter your project requries, but you never know. Just be
aware you can't pluck glass fiber out with tweezers. You'll end up in
the E.R.
------
Really? I imagine the silica dust is harmful to the lungs but that develops
over long term exposure? Yeah, I'm not using lasers or anything but simple
led's so I don't have to worry about that. Mostly I just need to cut the
fiber optics to size. (used a razor blade to cut what I had and it worked
fine although the end wasn't perfectly smooth and flat)
Do you know if I were to strip the fiber optic's jacket off and insert it in
the wood if the wood will change the refraction causing it to be less
efficient? Or if the wood will some how weaken the fiber optic? (although
that shouldn't matter too much as it's short and not being moved once in
place)
J
Jamie
Guest
Eeyore wrote:
I think any beginner can accomplish that.
http://webpages.charter.net/jamie_5"
that being the case, then it must be shit you're making!
I think any beginner can accomplish that.
http://webpages.charter.net/jamie_5"
E
Eeyore
Guest
Jamie wrote:
Or the importance of pcb layout. Not to mention the cost savings of offshore
manufacturing too.
One product of mine (in its various channel sizes) sold over 100,000 units.
Graham
You clearly haven't the tiniest clue about the economics of high-volume manufacturing.
Or the importance of pcb layout. Not to mention the cost savings of offshore
manufacturing too.
One product of mine (in its various channel sizes) sold over 100,000 units.
Graham
E
Eeyore
Guest
Kevin Aylward wrote:
though.
Graham
Motorola did a mosfet with a current sense terminal. Doubtless only N-channel
though.
Graham
E
Eeyore
Guest
Kevin Aylward wrote:
and phase response. If you need to, you can make up some lost overall gain with
jellybean transistors (or ICs) at the front end.
Graham
I'm a great believer in local feedback. Linearises stages nicely and improves HF
and phase response. If you need to, you can make up some lost overall gain with
jellybean transistors (or ICs) at the front end.
Graham