They come in a 60V and 200V DC version. 9 - 15V DC to switch them
On 27/12/2022 9:23 am, Alek Petkovic wrote:
Yep. They are DC.
On 27/12/2022 9:07 am, Paul Christensen wrote:
"OPTO-22 electronic relay. You can't get much simpler than that."
If going that route, ensure it's a DC-load solid-state relay -- not
the more
common AC SSR type that typically depends on a zero-crossing. Last
time I
checked, the PT-2500A amp has a -110 VDC amp key line.
Steve, also consider the Keyall device: http://wb9kzy.com/keyallhv.htm
Easy to build, easy to install, and it doesn't care about load
polarity: it
works with positive, negative, and AC amp key lines.
Paul, W9AC
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