Okey first of all i want to say hi my name is Tom in new here. Been an fan of Russes videos for quite an while. I live in sweden and thats why my english is abit off. So try to follow what im thinking.

Im trying to build an big powersupply 12volt. I do allot of work on car amps and get a whole bunch in return from time to time. I want to be able to easyly power an 1000watt rms amp at home.

The fuses on the amp is three 30amp fuses. I guess its 90amps total or something like that it would draw at full tilt of 12volts.

I got a bunch of computer powersuppys because i do allot of work with computers to. And i figured i might use them for the powersupply right. Problem i ran into is that when bass hits the powersupplys just senses short. And turns off. Thats no good.

So i figured with an large bank of caps i might be able to even out the load on the psu's and keep the signal clean to the amps on the same time. My problem is that i dont know a whole deal about caps. I like a few that really packs an punch sutable for 12v to 15v.

Dont know where to get them from. Or how to see the polarity of caps. Id like to be able to output twise the power i need from the psu's if i can get that i got some headroom.

Goal is to build an kick ass test rig and home system on the same time out of it.

What do you guys think? Is it doable? Or is it easyer to get an 12v battery and then having some charge sercuit for it? It will be under quite an workout i think. Thats why i think it wont last.

Hey Tom, I've been thinking similar to your idea about the caps. Russ suggested to me to look into Super Capacitors. They might be able to handle what your looking for.

I was thinking of a power supply running off a capacitor bank, But I still think 1 or 2 rechargeable batteries would be needed for the circuit.

Jackscholze has some vids on the Tube that show him charging caps and running a coil off a cap bank. Check here

Hopefully this is helpful

Quote from Vaughn on May 13th, 2011, 10:04 AM

Hey Tom, I've been thinking similar to your idea about the caps. Russ suggested to me to look into Super Capacitors. They might be able to handle what your looking for.

I was thinking of a power supply running off a capacitor bank, But I still think 1 or 2 rechargeable batteries would be needed for the circuit.

Jackscholze has some vids on the Tube that show him charging caps and running a coil off a cap bank. Check here

Hopefully this is helpful

Im thinking about something slightly different that might work for audio testing stuff. An good psu about 60amps on the 12v rail should do. And then wire that to an pair of small sealed batterys. That hold an fair bit of power. And from that to some big jousey caps. And out to the amps. Problem is when bumping im not sure if the batteries are ganna drain faster then the psu can charge them.

I might need more power in the psu. And keep an low current charge on the batteries. Might be easyer to get the voltage up a bit also if i do it that way. And might give more power. Batterys can output high current at shorter time. And caps do the same thing. Maybe if combined. You can get like 100amps for 5minuts with bass peaks of 140amps. before the batteries drain. I calculate my load to about 60 - 80amps at 14volts.

But the question is. Computer psu's are senastive to voltage. What hapens when they try to output 12v and get 14.8 or something back? Maybe an copple of diods might remidy that. But im not sure. Maybe someone knows.

Did an test with my 8Amp psu today that i torture most of the time. tuned it to 14.8v and it kicked on. And charged an motorbike battery. And then i wore bumpin it was putting in about 20amps. But it got hot really hot. And the battery started dropping voltage after an track or so. Drew about 50amps then i think. In the end an good test. But i think the psu is done for. That 8amp psu i think died.