This regulator or voltage reference consists of a variable zener diode. We found it in the June 1984 issue of Radio Electronics magazine. The output current is low.
We found this circuit in an American publication from 1977. The integrated circuit is the 7400 and the...
With 3 transistors, we found this receiver in a documentation from 1966. The circuit has an output...
This circuit detects when a powered circuit suffers a malfunction, lighting an LED. The supply...