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Cheap, high amp dc power supply?

Discussion in 'Misc Electronics' started by twags6, Mar 3, 2006.

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  1. twags6

    twags6 Guest

    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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  2. 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.
     
  3. Jerry G.

    Jerry G. Guest

    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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