Hey, its me again! Heheheh.

I've been researching power supplies for car audio. I've seen that most of your higher output watt amplifiers require quite a bit of voltage, both +V and -V.

Now, the approximate 12V power provided by car batteries is a definate limitation to the amount of voltage that can be created using traditional methods. I've seen car audio power supplies up to +-37V. Does anyone know of any power supply schematics that provide a greater output voltage?

Thanks a bunch! :shock: this guy looks cool! :shock:

 

They just use an inverter, a car amplifier will already have this internally. This is why you need massive cables for them, they take huge (and I mean HUGE!) amounts of power.

 

typicly for big "thumb" a 1/2 farad or greater cap. is used. The amp will convert the 12v to the voltage it needs. What happens is when you hit a base note on the audio it draws a lot more juice then a treble note. So to compensate the energy stored in the cap. will provide the extra power. They are expensive, but no more then building you own power supply. Eother way you still have a battery providing power. Whitch are not too tolerate with big current draws.