Cheap, high amp dc power supply?

[twags6]

Is there any way to make a dc power supply capable of 50+ amps a
12-13.8 vdc? Basically, I'm looking for something to simulate th
power from a car without the whole battery and charger setup. Part
express sells a nice rackmount one, but I'd rather not part with $190

TI

Trevo


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[Homer J Simpson]

Is there any way to make a dc power supply capable of 50+ amps at
12-13.8 vdc? Basically, I'm looking for something to simulate the
power from a car without the whole battery and charger setup. Parts
express sells a nice rackmount one, but I'd rather not part with $190.

I'd use the charger / battery setup, but otherwise I'd look for a good
switcher design. "Silicon Chip" (Australia) may have published one.

http://www.siliconchip.com.au/

Any linear system would be a brute - 600 W dropping maybe 150 W in the
heatsinks? Nasty.

 

[Jerry G.]

The price you mentioned is very good for the specs. Your only other
alternative is to search out for one on eBay, or somewhere else. If you
buy one used, be prepared to most likely have to service it.

Another cheap solution for 12 Volts at a high current rating is to get a
car battery, and a charger. A car battery will give you hundreds of
amperes. The greater the amp hour rating of the battery, the more time
you can have between charges. The best type of lead acid battery for
heavy discharge applications is one rated for deep discharge.

--

Jerry G.


Is there any way to make a dc power supply capable of 50+ amps at
12-13.8 vdc? Basically, I'm looking for something to simulate the
power from a car without the whole battery and charger setup. Parts
express sells a nice rackmount one, but I'd rather not part with $190.

TIA

Trevor


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