12v variable power regulator

Discussion in 'Growing Marijuana Indoors' started by growgreen5, Jan 3, 2015.

  1. how are you doing this?
     
    I purchased a cheap unit on ebay and after 10 min the thing no longer does anything variable.

    In the past I had a pricy radio shack power adapter that switched from 3v-6v-9v-12v.  worked great.  but i have an abundance of 12v power supplies and fan is too loud.
     
    suggestions?
     

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