[William] also learned that the resistor was not necessary either, beyond starting the coil oscillating. The actual 3-component build uses a 10 farad supercapacitor as a power source, hooked up to ...

The self-resonant bit is implemented by using a small antenna nearby the coil to pick up the EM field, and by suitably clamping and squaring it up, it is fed back into the gate driver to close the ...

A step-up transformer has more turns of wire on its secondary coil than it does on its primary coil. Transformers will only work with an alternating current (ac) input. This transformer steps up ...