The main objective of this project is to design a circuit utilized for activating the relay for turning on the load when it senses a composite video signal, and then, switching off the load. It can be utilized for switching off a TV automatically once the video signal isn’t accessible.
The proposed framework utilizes a video amplifier and rectifier power supply wherein the video amplifier is utilized to allow video signals. The lamp is connected with the transfer contact as an indication of the load. The transfer is controlled by the relay which is associated with the circuit.
At whatever point this circuit gets the video signal from the input channels – it amplified, and by a transistor – this framework turns on the relay to switch the load on. Whenever the video signal is not available, the load is turned off by the relay by cutting the power supply to the load.