27 Dec
27 Dec
2:09 a.m.
--- "James L. Rice" <jrice(a)texoma.net> wrote:
Thank you. I couldn't find a link on the site.
Looks like a standard ladder D-to-A and a standard comparator
bargraph (built one once from a Heathkit surface mount course).
I'm a little concerned about the bottom of the schematic - it looks like
you are supposed to run -5V to ground!
-ethan
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9:07 a.m.
On Thu, Dec 27, 2001 at 08:09:44AM -0800, Ethan Dicks wrote:
--- "James L. Rice" <jrice(a)texoma.net> wrote:
Thank you. I couldn't find a link on the site.
Looks like a standard ladder D-to-A and a standard comparator
bargraph (built one once from a Heathkit surface mount course).
I'm a little concerned about the bottom of the schematic - it looks like
you are supposed to run -5V to ground!
No, as far is I can tell, this is just a misleading label. The whole
device is supposed to be powered from a drive power feed from the inside
of the PC. The "-5 V" label here just means "connect to ground of +5 V
supply".
Regards,
Alex.
--
q: If you were young again, would you start writing TeX again or would
you use Microsoft Word, or another word processor?
a: I hope to die before I *have* to use Microsoft Word.
-- Harald Koenig <koenig(a)tat.physik.uni-tuebingen.de> asking Donald E. Knuth
10:11 a.m.
--- Alexander Schreiber <als(a)thangorodrim.de> wrote:
On Thu, Dec 27, 2001 at 08:09:44AM -0800, Ethan Dicks
wrote:
That explains the "black wire" comment...
-ethan
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I'm a little concerned about the bottom of
the schematic - it looks
likeyou are supposed to run -5V to ground!
No, as far is I can tell, this is just a misleading label. The whole
device is supposed to be powered from a drive power feed from the inside
of the PC. The "-5 V" label here just means "connect to ground of +5 V
supply".
8348
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8348
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3 comments
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als＠thangorodrim.de -
erd_6502＠yahoo.com -
jrice＠texoma.net