Using an LDR as a sensor and an operational amplifier this circuit was found in the Encyclopedia of Electronic Circuits volume 5 from 1995. The circuit triggers an optodiac.
This circuit was found in a 1970 American publication. The FETs are power types according to the...
This circuit is from a 1974 publication. It generates a pulse with several sinusoidal cycles from...
Suggested by Philips in 1966 documentation, this limiter can be found elsewhere on this website....