Circuit diagrams and schematics - Electronic projects

This 9-minute timer switch can be used to control the light in a toilet or bathroom. The timer is started by pushing S1 and stopped by pushing S1 again. If you forget to turn it off, the controlled light will go off after nine minutes. If you need the light on continuously non-stop, you need [...]

This circuit will help facilitate in sleepy eliminating the need to get off or the radio. Etc., which can save energy costs down. When the switch S1 / 2 power input to the circuit C1 No. 7611. To a voltage comparison circuit. The pin 3 is the noninverting pin. for pin 2 to pin inverting. [...]

This little timer kit can be easily added to any existing project to allow for automatic shutoff. Tons of applications; heating, cooling, lighting, entertainment systems, fans, pumps, sprinklers, cryogenic stasis tubes? well maybe not that last one! Just set the jumper for short or long timers, use the push button to select your desired timer [...]