We found this circuit in a Radio Electronics Experimenter from 1990. The circuit uses a common incandescent bulb and a car ignition coil.
The idea of this 1982 Experimenters Handbook circuit is to generate an RF signal in L2 that can be...
The automatic heating system sensor is a diode placed in a waterproof tube as shown in the figure....
This circuit was found in Motorola's 1968 documentation. The SCRs are then replaceable with...