This 80's circuit turns off a TV or other appliance after a set time. The base is a 555 IC and the relay is according the supply.
This circuit produces a pulse when the voltage in the regulator exceeds a certain value depending...
This transistorized shield also functions as a logic gate. The power supply can be in the range of 4.5...
The idea of this 2002 circuit is to turn on a coffee maker automatically at dawn. The sensor is an...