This circuit turns off a relay after a time determined by C1. The circuit was found in the December 1974 Radio Electronics magazine. The relay is rated according to the supply voltage.
This circuit was found in a French documentation from the 80's. The circuit must be powered by a...
The Nerve-test is a traditional electronic game. The player must pass a metal ring through a...
In the figure we show a configuration for a crystal-controlled overtone oscillator using a...