This circuit is from an Electronics World of 1967. The described calculations can be applied to equivalent circuits with modern transistors.
When the equipment powered by the SO1 socket is turned on, the SO2 socket is automatically...
This circuit was found in the December 1990 issue of Radio Electronics magazine. It was used in a...
This circuit activates a relay after a time given by C1 and R1. The circuit is from a Radio...