Automatic Light Switch Circuit Diagram. One end of the reed switch is connected to 5v power supply while the other is connected to the base of bc558 pnp transistor. Jan 24 18 02 09 pm.
A photo of the completed breadboard circuit is shown below. Multiple light wiring diagram. Operational amplifier ic lm741 and decade counter ic cd4017.
Automatic light circuit with adjustable trigger threshold.
The working of this night light circuit very simple. The circuit will automatically switch on the ac lamp when night falls and the lamp will be automatically switched off after a preset time. The first diagram shows how the circuit can be configured using transistors the second and the third circuits demonstare the principle by using cmos ics while the last circuit explaines the same concept being implemented using the ubiquitous ic 555. Step by step instructions on how to wire a switched outlet.
