Practical color TV remote control shutdown circuit ----- Remote Switch

A practical color TV remote control shutdown circuit Author: Hebei So Star Red The article 13 of the 13th edition of the newspaper "giving a power to ordinary color TV." From the attached circuit diagram, the circuit can realize remote AC shutdown function. However, when the TV is working, the relay J1 in the figure will remain in an absorbed state, which increases the loss of the power supply in the machine. Here are another remote control AC shutdown circuit made by the author for a reference. The 12V power supply in the circuit comes from the + 12V voltage output of the switching power supply or row circuit controlled by the remote control circuit. After the power is turned on, the + 12V voltage is charged by D1 to C1, the transmitted diode inner, the optical coupling is turned off, and the canable silicon is not turned on, the power switch is self-locking, the TV is normal; when the remote control is turned off, the machine is turned off, The + 12V voltage disappears. Because of the presence of DL, C1 can only discharge through the transmitted diode of R1 and optocoupler to the load loop of + 12V voltage, and the optical coupling internal photosensitive receiving tube is turned on, and the canable silicon G is extremely electrically triggered Relay J instantapip, the power switch is released, and the TV has realized remote control AC shutdown. C2 in the circuit is suppressed to suppress interference, and the controllable silicon cannot be effectively triggered (turned on). The component model used in this circuit has been marked in the figure, and the power switch of the TV must be replaced with a relay self-lock switch in the figure, and installed according to the installation of the original switch. In addition, when the circuit is installed and turned on again, most of the televisions will be in the remote standby state, and must press the standby switch or the standby button on the remote control for secondary boot.

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