From: Jim Thompson
Subject: Re: Short Circuit Detector
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Date: Fri, 11 Oct 2002 19:14:47 GMT
NNTP-Posting-Date: Fri, 11 Oct 2002 15:14:47 EDT
Organization: Cox Communications
On Fri, 11 Oct 2002 16:55:15 +0000 (UTC),
"Chris Oates" ,
In Newsgroup: sci.electronics.design,
Entitled: "Re: Short Circuit Detector",
Wrote the following:
|"red rover" wrote in message
|> Does anyone have link to a design for
|> short circuit detector? I recall that Bob
|> Pease had a design for one in his Analog
|> Troubleshooting book. I believe it was
|> basically a micro ohmeter with an audio
|> output and you worked your way around
|> the pcb homing in on the fault.
|> Anybody here made one? Any good success?
Use a chopper-stabilized OpAmp so that you can measure micro volts.
As you probe from the power supply inward the voltage will keep
dropping... when it stops dropping you've located the short.
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| Jim-T@analog_innovations.com Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |
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