Machine type color TV AC automatic shutdown circuit

TV remote boot function has only partially shut down during the shutdown, the shutdown may be employed in order to achieve this automatic exchange circuit.
The circuit is shown in the figure. Press AN and manually turn on to make the color TV work. The voltage drop generated by the working current on R2 is rectified by D2 and filtered by C2 to make BG conduct. IC12 pin is low level, pin 3 outputs high level, J Pulling in, its contact J closes and locks itself, and the color TV still works normally after releasing AN. After remote control shutdown, the operating current of the color TV is greatly reduced, the voltage drop on R2 is very small, BG is cut off, IC6 pin rises to high level, pin 3 outputs low level, J is released, and AC automatic shutdown is realized.
The resistance of R2 depends on the power of the color TV, which is generally a few ohms, so that the AC voltage at both ends of R2 can be maintained at about 2V. After the circuit is installed, adjust R3 to make BG work in a shallow saturation state.