[Teodor] writes in with a unique Tesla coil he designed and ... the relay to briefly open every time the coil is energized, creating a resonant circuit. The resonant circuit charges a tank ...

The optimized design actually uses the shape of the assembled component leads to act as the primary coil. The tiny Tesla coil isn’t big and bold enough to throw big sparks, but it will light a ...

The Tesla coil transforms an input voltage into brief pulses of extremely high voltages. Tesla's largest coil, built at his Colorado Springs lab in 1899, was 52 feet in diameter and generated ...

The device has a primary coil which passes a current onto a secondary coil, creating a high voltage and low current, which shoots out a lightning like discharge. British couple Craig and Lindsay ...