[Amps] Actuating a 120 VDC relay with low voltage

[David Gow]

I have Jim's board in my SB-220, it works great!

On Mon, Dec 26, 2022 at 2:22 PM Jim W7RY <jimw7ry at gmail.com> wrote:

> I have a board available. Contact me off list.
>
> 73, Jim W7RY
>
>
> On 12/26/2022 4:04 PM, 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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> --
> Thanks and 73, Jim W7RY
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