[GreenKeys] Relay suggestions

[Jim Haynes]

Someone suggested an optocoupler, and probably a better choice is a
solid state relay with optical isolation.  Attached is a document on the
subject by somebody.  In addition to the relay you'll want to put in
something like back-to-back Zener diodes or an R-C snubber to limit
the peak voltage on loop opening to something that won't blow the
relay.

Jim W6JVE

 	---

 	"Ya can argue all ya wanna, but it's dif'rent than it was."
 	"No it ain't! No it ain't!  But ya gotta know the territory."
 		Meredith Willson, The Music Man
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