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.
This 4-competitor TTL speed game was obtained in a 1980s documentation, but can still be easily...
This powerful sound emitter used in defense to intimidate people was found in a 90s Popular...
This circuit triggers an alarm when the mains power is cut off. The circuit was found in the July...