• bizarroland@lemmy.world
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      9 days ago

      It is dark magic but from what I understand it’s *done by placing a portion of the circuit behind the power supply, so that it’s both pushing 12 volts and pulling 12 volts.

      I don’t think that that is enough of an understanding to replicate the phenomenon, but if you were designing such a circuit with a gun to your head and no know how, it might be enough for you to figure it out and save your own life.

    • sam@lemmy.blahaj.zone
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      9 days ago

      Depends on relative to what.

      Connected to the wall: it’s AC (alternating current). half the wave is already negative. You can rectify it backwards, apparently. Or, you can use a split phase transformer.

      Connected to a really big battery: big inverter just swaps the leads on the battery really fast.

      Hold in your hand: negative charge pump. Magic & momentum.