Need analog opto-isolator or equiv.

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Article #7426

#7426

From: Chris Elmquist
Date: Mon, 24 Sep 1990 21:58

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Does anyone have a nifty circuit that will replicate a 0v to 5v DC
signal across an opto-isolated path..??  I need to read a meter
in a hostile environment with an A/D in a PC.  I don't want the
PC to get near this meter... this meter will be read, maybe, 10 or
15 times a second so frequency response is not critical...

I've thought about serial A/D and D/A chips...  but I haven't
found any that use the same data format over the serial link...
maybe I missed something.

I've also though about a voltage->frequency ... frequency->voltage
converter and this seems workable...  maybe someone has a circuit
like this.

Any ideas would be appreciated.

Thanks--  Chris
elmquist@nachos.ssesco.com

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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!tut.cis.ohio-state.edu!uc!nachos.SSESCO.com!elmquist
From: elmquist@nachos.SSESCO.com (Chris Elmquist)
Newsgroups: sci.electronics
Subject: Need analog opto-isolator or equiv.
Message-ID: <222@nachos.SSESCO.com>
Date: 24 Sep 90 21:58:30 GMT
Sender: elmquist@nachos.SSESCO.com
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