This circuit is from a Mallory 1968’s documentation. The integrated circuit is of the time and the transistor admits equivalents.
The oscillator shown in the figure generates a rectangular signal with a 50% active cycle (square)...
This circuit was obtained in a QST magazine from the 90s. The circuit makes use of components that are...
This 12V incandescent lamp switch with time delay was found in old documentation. The SCR can be...