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power supply 12 v dc
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  1. Technical Model Train Forum
    This supply has 20 volts AC and 12 volts DC at 4 Amps. The DC didn't work and blew my amp for the Diesel Horn Project. So I had to regroup and work the Power Supply. I replaced the old rectifier with a new itegrated circuit and with a 12 volt chip and two capacitors I created my 12 volt DC power...
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