笔者设计制作了电视机自动关机电路,开机无信号能自动延时一段时间,供选择有信号频道用(在中途观看时转换频道开关亦能自动延时)。信号消失后再自动延时一段时间才关机。这样,每次开机只需碰触一下按钮开关N,节目完后便自动关闭了。所用零件仅10只,仅几元钱,且无需调试。 I designed and manufactured a TV automatic shutdown circuit, boot no signal can automatically delay a period of time, for the choice of signal channel (in the middle of the conversion channel switch can also automatically delay). After the signal disappears automatically delay for some time before shut down. In this way, each time you just touch the button switch N, after the program will automatically shut down. Only 10 parts, only a few dollars, and without debugging.