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Article #6240

Need simple signal detection schematic

#6240
From: Craig Presnell
Date: Wed, 09 Sep 1992 20:25
18 lines
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I'm not incredibly familar with electrical circuits, and how
to create them, but I do have a strong interest in learning and
playing around with some of this stuff. Something I would really
like to do is, for instance, is built a lighted breakout type
box for an RS-232 port on my PC. Something really simple, that
just activates a LED when a signal passes through. I would
also like to apply this to something similar, like using
the same kind of circuitry in a device that activates a LED
when a telephone is being used. Is there some generic 
transitor/LED circuit that I could use to apply to these
humble projects? While I surely don't know a lot about circuitry
now, I do hope to pursue it in the future. All and any help
that I receive will be GREATLY appreciated. Thanks.

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><         Craig Presnell          ><    mcp@netcom.netcom.com     >< 
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Path: arc1-ca.pugleaf.net!sparky!uunet!decwrl!csus.edu!netcom.com!mcp

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Newsgroups: sci.electronics
Path: arc1-ca.pugleaf.net!sparky!uunet!decwrl!csus.edu!netcom.com!mcp
From: mcp@netcom.com (Craig Presnell)
Subject: Need simple signal detection schematic
Message-ID: <j1snfcp.mcp@netcom.com>
Date: Wed, 09 Sep 92 20:25:49 GMT
Organization: Netcom - Online Communication Services  (408 241-9760 guest) 
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