Home Made Varible Ballast!


Introduction: Home Made Varible Ballast!

About: backyard physics and high voltage

This is my attempt of coming up with a way to control the amount of amps going into my pole pig, using two microwave oven transformers wired  to draw 7-14 amps,  the  MOT transformers were modified by cutting part of the core so it can move and vari the inductance.

I did some tests and it does work for limiting the power, but will draw a minimum of 3 amps per transformer



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    where the hell did you manage to get a pole pig, amazing1 wont sell to anyone without certification...please tell!

    Cool and simple!   

    So does it work?  And if so, how well?   

    Did you actually have to cut the core?  Or was that an existing interface between the E and I shaped portions?   

    1 reply

    I had to cut the core.
    I was controling 240V with two of them (2 phase) 120 volts per phase.