BUILDING POWER SUPPLY
 

I need a power supply for a ice charger. And I was told that I could make my own using pc stuff. How do i do this??

Use use the 12v rails on a pc power supply.

but you have to step up the voltage with resistors so it can push a constant amount of power i made one and it would shut off as soon as i turned the charger on due to the power supply not having enough amps to run the charger. ill search for the directions to help you out

Assuming that you are using a fairly modern ATX PC power supply, it's simple:

Join 2 black wires together. This is your negative supply (0v)
Join 2 yellow wires together. This is your positve supply (12v)

Join the green wire to a black wire. This switches the power supply on.

If you are using a decent quality supply, this is all you need.

If the supply shuts down, fit a car tail light bulb between a red wire wire and a black wire. This puts a load on the 5v circuit, and helps to stabilise the supply.

I'm running 2 chargers from a slimline 250watt PSU this way, with no problems.

BZZT!

http://www.wikihow.com/Convert-a-Com...b-Power-Supply
da - daaaaaaa!

Guys its great to do it yourself but IF YOU GET IT WRONG YOU CAN KILL SOMEONE. GET IT TESTED FIRST by a Sparkie.

Shane

easier to go to your local electronics shop (radioshack jaycar) and pick up a power pack its cheap and wont kill you if you mess up

While safety should always come first, as long as you don't open the PSU case there's no risk. PC PSUs are well protected against shorts and over/under voltage. Draw too much current and the voltage drops and it switches off.
If you open the case you can get hurt.

The only risk I can see from using an unopened PSU is if someone pokes a metal object through the vents.

If its got exposed terminals its a problem to everyone.

for $80 bucks get one from J Car 20 amp supply.

cheap power
 

go to Walmart and get a deep cycle marine battery and plastic housing case. Go to a real hardware store and get 4 nylon bolts and 4 nylon nuts. Go to Sams Club and get the gigantic power inverter. Drill holes in top of plastic housing according to hole positions on inverter. Use nylon bolts to secure inverter to the top of the battery lid. Drill/cut big holes in back of lid to fit wires through to battery terminals.

Done.....total cost, around $120. Should be good to power a large fan for the entire day of racing....on top of the battery charging needs.

Con: heavy
Pro: super easy to replace battery (3+ years and I haven't had to)
Pro: so much power it could power fan, charge, jump start your car, power a light at the same time for 8+ plus hours of heavy duty usage.

why exactly do you need an inverter, voltage coming out of the battery is already DC and 12 volts.