Found in a Popular Electronics from the 90s, this circuit can be used as an electrifier. T1 can be an old TV fly back transformer or an ignition coil.
This circuit was found in a 1978 British magazine, but it can still be mounted by simply replacing the...
This circuit was found in a 90s Electronic Design. The circuit was designed to be powered by a 4 - 20 mA...
This passive circuit was found in a 1993 Electronics Hobbyst Handbook. The circuit has the...