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笔者介绍的遥控彩电交流关机电路,只需在普通遥控彩电上加装五个元件(电路见附图),即可实现交流关机功能(切断机内所有电源),且使用可靠,一装即成,无需对机内电路作任何改动。当按下电视机电源开关,行电路工作,三极管Q得电饱和导通,继电器J得电吸合且自保。这时应随手再按一次电源开关,即断开机械开关电源通路(有动手能力的读者可拆下原电源开关中自锁弹簧,则可免去这再按一次开关),彩电靠触点JK吸合得电工作。遥控关机后,行电路停止工作使J释放,机内电源全部切断,达到交流全关机之目的。
The author introduced the remote control color TV AC shutdown circuit, simply add ordinary color TV remote control five components (see the attached photo circuit), you can achieve the AC shutdown function (cut off all the power supply), and the use of reliable, a ready Serve , Without any changes to the circuit inside the machine. When you press the TV power switch, the circuit work, the transistor Q must be saturated and conducting relay J energized and self-protection. At this time should be readily press the power switch, that is, open the mechanical switch power supply path (hands-on ability of the reader can remove the original power switch in the self-locking spring, you can remove this press the switch again), color TV contacts JK Pull the electricity work. After the remote control is shut down, the circuit stops working to release J, the power in the machine cuts off completely, reach the goal of shutting off completely.