This normally open, two-terminal, high-sensitivity circuit was found in General Electric's technical documentation from the 1980s. The circuit is half-wave.
We found this circuit in a 1967 RCA SCR manual. The circuit uses components from the era. The...
A simple bistable configuration can be obtained based on just one amplifier, as shown in the...
This series sensor circuit is from 1995 Popular Electronics. The circuit can use any SCR and the...