Found in a 1967 EEE, this circuit generates a constant amplitude signal, stabilized by a zener diode. The circuit can operate with voltages from 18 to 22 V.
This crystal-controlled oscillator was found in the January 1994 issue of Electronics Now. Other...
Found in old documentation, this timer uses a sensitive relay and a 2N2646. The time is given by...
When S1 is closed, the L1 lamp turns on and the L2 lamp turns off. The circuit is powered...