[Gb-ccb] Rich's message 1

[Brian Mason]

"Message 1" from Rich was denied- text is below- it contained a large
attachment which I posted to my project page. All this is just "for
the record" (so the mail server archive is complete)

 Brian

  Martin,

  Attached are copies of (quite old) schematics illustrating what I had in
  mind. In particular, the circuits near the hand-written "Transmitter"
  and "Receiver" are asociated with the opto-isolator.

  Rich

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Brian Mason                           | office: +1(304)456-2338
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