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Which more important volt or current regulator

Discussion in 'General Electronics Discussion' started by mrel, Feb 26, 2009.

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  1. mrel


    Jul 2, 2008
    I would like to know which is more important to have a voltage or current regulator.
    I have a solar cell that put out 12 volt with around 5 watts output with no load.
    I want to use the solar cell to charge Nickel metal hydride battery 1.2 volt.
    Want to charge maybe one battery or maybe more than one at different time.
    Is there a circuit somewhere that automatic disconnect the solar cell from the battery once the battery is fully charge by the solar cell ?
    Thank for the help,mrel
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