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voltage and amperage control

Discussion in 'Electronic Basics' started by magneto via, Jul 4, 2007.

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  1. I would appreciate your suggestions on how I can control the DC voltage and
    amperage for something I am building for my car. I want to be able to set
    voltage between the basic 12 volts and lower it to 10, 8 and 6 volts on the
    test line; and do the same with the amperage (ie. set and reset it to 20 amps,
    18 amps, etc.).
    Your suggestions would be appreciated.
    generalagent [at] hotmail [.] com.
  2. First, the "basic voltage" of a car electrical system is about 13.6
    volts while the engine is running, and perhaps as low as 11 volts when
    the battery is fairly well discharged.

    Google for information on voltage regulator and current regulator.
    Note that any load will only take the current it requires at the
    applied voltage - you can't regulate current and voltage

    A current regulator will reduce the applied voltage when the load
    attempts to draw more than the specified current.

    Peter Bennett, VE7CEI
    peterbb4 (at)
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