This circuit appeared in the June 1990 issue of Radio Electronics magazine. Integrated circuits must be equipped with heatsinks. Current and voltage depend on the ICs used.
The purpose of this circuit is to warn when a door is opened or when left open, feeding a buzzer of...
This dimmer was found in a 1980 publication. The Triac can be any of the TIC series and the...
This interesting circuit allows to obtain symmetrical voltages from a simple battery. Among its...