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Re: [Amps] Actuating a 120 VDC relay with low voltage

To: amps@contesting.com
Subject: Re: [Amps] Actuating a 120 VDC relay with low voltage
From: Jim W7RY <jimw7ry@gmail.com>
Reply-to: jimw7ry@gmail.com
Date: Mon, 26 Dec 2022 16:22:41 -0600
List-post: <mailto:amps@contesting.com>
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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