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Message: <blockquote data-quote="tesladude" data-source="post: 8296849" data-attributes="member: 662082">Guys, yes car amplifiers are initially powered by a simple 12v car battery.I am talking about the guts, (I am an electrical engineer and have designed and made similar amps by hand,)Inside your amp there is a chip that simply connects and disconnects power to a large transformer or coil, on the other side of your coil you get much higher voltage which is required to power the mosfet amplifier circuit which puts out the wattage these amps put out.(That is the VERY simple way to put it.)(yes I know my spelling *****, don't have to be an ***.)I am done with this project but the 20v was referring to the voltage after the pwm step up power supply.</blockquote>

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