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[TRLog] Opto Iso Keying

Subject: [TRLog] Opto Iso Keying
From: punkymcd@pacbell.net (punkymcd@pacbell.net)
Date: Tue, 03 Aug 1999 20:31:25 -0700
Hi,
Can anyone give me a good reason for the diode in series with the LED in
this circuit? It looks like a diode in series with another diode (LED)
to me.

73, Don, W6OA


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