This circuit is from a Radio Electronics from July 1965. The circuit uses components from the time also controlling a servo from the time. The power supply is 28 V.
This circuit that can be activated by light or heat was found in an old American documentation, but the...
We found this circuit in an old French documentation from the 70s, but it can be assembled using...
This circuit was obtained from Hands-On Electronics, an American magazine of January 1987. The...