Automatic Washroom Light Switch Circuit Diagram. Operational amplifier ic lm741 and decade counter ic cd4017. Go through the following steps to test your circuit.
When the door opens and closes for the second time the circuit turns off the light by turning off the relay. Operational amplifier ic lm741 and decade counter ic cd4017. Open the door of the washroom and enter it.
Components required reed switch with magnet available as combination lm741 op amp ic cd4017 decade counter ic 5v relay module lamp bc558 pnp transistor.
The circuit diagram of this device consists of two main components. Now open the door again and get out of the washroom. Also read the post. Circuit diagram step 5.
