This circuit appeared in the 1991 Electronics Experimenter Handbook. The circuit is for remote controls of the time that are slower than today's and may not work with modern types.
Found in the March 1992 Radio Electronics magazine, this circuit has two supply voltages. The...
This transmitter, indicated for espionage applications, is permanently powered by the power grid....
This oscillator or clock generator generates rectangular signals and frequencies up to 100 kHz....