This alarm with automatic shutoff was found in the April 1975 Radio Electronics magazine. The activation time is given by C1 and R3. The alarm uses series and parallel sensors.
This symmetrical power supply uses regulators from the 78xx and 79xx series and can be adapted to supply...
January 2017 - Mouser Electronics has announced the availability of Pulse Electronics' new...
Found in Signalite documentation from the 1960s, this circuit generates ladder pulses. The circuit...