Car battery charger design

[Sandre]

If you choose a 15v laptop supply, the diode will drop it by about 0.6 volts, and a 1 ohm resistor will limit current to what the supply can handle. If the supply output goes above 15v at low currents, add an incandescent pilot light or a resistor upstream from the diode.

About the ATX supply, Google and you'll find tips on how to use them for bench power supplies or running car amps.

I already s computer psu running the amp just that it's not outputting enough amp so I'd run it off the batter and keep constant current to it


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