This circuit was obtained from HAM Radio magazine in an 80's issue. The FETs are types of the time and the frequency is determined by the crystal. The circuit operates at voltages from 3 to 9 V.
The base of this circuit is 1/4 of an integrated circuit 4136 which consists of a quadruple 741....
This circuit dates to 1999, when most vehicles did not yet have electronic ignition and used...
This small inverter that produces high voltage from a 6 V source was found in an American...