AC Switch with Triac (CB25855E)

The load controlled by this circuit depends on the triac used. The circuit is from Electronics Now magazine from June 1995.

TV Modulator (CB20773E)
This circuit for the VHF band of analog TV was found in Motorola documentation from the 70s. The...
Thermostat Without Relay (CB18013E)
The sensor of this circuit is a common silicon diode and it directly drives a small cooler with a...
Magnetic Microphone Preamplifier (CB25694E)
This circuit was found in the March 1994 issue of Electronics Now magazine. The circuit uses a...