This circuit provides a delay for the activation of an alarm, giving the owner time to leave the premises. The circuit is from the 1995 Encyclopedia of Electronic Circuits Volume 5.
This charger for a maximum current of 15 A was obtained from an American 80's schematics. The triac must...
This simple photometer uses a 1 mA milliammeter and a common phototransistor. The circuit has its...
Indicated for stereophonic sound applications, this circuit was found in the April 1983 issue of...