This Tesla coil was found in the November 1994 issue of Electronics Now magazine. T1 is a TV flyback transformer, but a car ignition coil can also be used.
We present a circuit formed by six voltage comparators. Each comparator will analyze the voltage...
This circuit can generate time base signals from 5 to 1500 Hz. We find it in a documentation about old neon...
In this circuit the CA3140, an operational amplifier, is used as a comparator with the zener diode...