Lowest Operating Voltage Tesla Coil

This Tesla coil works on just a single 1.5 volt DC battery. The yield of this Tesla coil produces flashes of around 1 inch long. This test was an individual task to check whether I could get a Tesla coil working with the most little requiring current. So maybe later on with some minor adjustments I can drive it maybe with the encompassing energies around me and couple into those sources and use maybe as a free source of energy.

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