[Elecraft] Turning ON KPA500 with K3?

[ke9uw]

Probably a simple circuit using the "12 volts on" output would be the best
approach to provide a neg pulse to the pin #8 to the KPA500 for both power
on and power off. Also the pin #7 outputs a logic 5 volts when the K3 is
turned on...another possibility.

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Chuck, KE9UW
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