Noob working a 24VDC siren PA on 12VDC with PTT mic interrupt

Discussion in 'The Projects Forum' started by mat68046, Dec 30, 2015.

  1. mat68046

    Thread Starter New Member

    Dec 30, 2015
    1
    0
    Working on converting a 24vdc PA siren to work on 12VDC. I found a step-up transformer to power the unit. The tone module and integrated amp runs on 24 volts but I also want to run a mic PTT to switch in as signal and power and isolate the tone module/ power supply line. I assume the mic PTT can handle 24v....Being challenged electronically I stop at theory and get lost at 87A relays.
    I can solder at least to breadboard something!
    Appreciate the help
     
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