This circuit detects changes in magnetic flux in a coil as an external magnetic field moves. The circuit is from Electronics Now magazine, October 1996.
This alternating voltage voltmeter was found in a 1967 magazine. The magazine no longer exists, but...
I found this circuit in a 1992 Electronics Experimenter Handbook. The circuit can be easily...
This circuit uses an ignition coil to generate the high voltage that electrifies a fence. However, in...