[Amps] Actuating a 120 VDC relay with low voltage

[Alek Petkovic]

OPTO-22 electronic relay.

You can't get much simpler than that.

73, Alek VK6APK.

On 27/12/2022 6:04 am, Steve London wrote:
> I have an old PT-2500A with a 120 volt relay. Modern radios don't like such
> a high voltage on their PTT circuit.
>
> Can someone point me to a circuit that will allow control of the 120 volt
> PTT relay with something in the 12-24 volt range ? Seems like it should be
> pretty simple with a transistor that can handle 120 volts collector to
> emitter, but I would rather have a tried-and-true circuit so I don't screw
> something up.
>
> Thanks and 73,
> Steve, N2IC
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