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.

Instrumentation Amplifier (CB14740E)
This amplifier, for millimeters from 0 to 1 mA, was found in a 1957 Raytheon publication. The...
LM148 5 kHz oscillator (CB18873E)
This circuit was found in an old European publication, but it can be implemented with more modern...
Micro FM Transmitter (CB12111E)
This small FM transmitter was found in a Radio Electronics magazine in 1991. The magazine no...