在电视机正常工作后再频繁开关电视机的做法是不好的。 电视机开机时,显像管的灯丝温度低,电阻要比呈炽热状态时的灯丝的电阻小得多,这样通过灯丝的电流就比正常工作时的电流高五、六倍以上,灯丝就会受到大电流的冲击。冲击次数多了,灯丝就容易老化,甚至烧断,从而缩短 It is not good to switch the television frequently after the TV works normally. When the TV is switched on, the tube’s filament temperature is low and the resistance is much less than the resistance of the filament when it is hot so that the current through the filament is five or six times higher than the current during normal operation, and the filament is affected Current impact. The impact of the number of more, the filament is easy to aging, or even blown to shorten