Using a 106 series SCR, this circuit was found in the May 1971 Radio Electronics magazine. The quiescent current is very low and is given by the value of R1.
We found this interesting bistable photoelectric control circuit in a 1988 documentation. The...
The integrated circuit used in this oscillator is no longer common in our market, as the...
This circuit was found in a 1970s documentation. The integrated circuit used is uncommon today....