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用普通照明灯泡作假负载来检修电视机开关电源,简单易行且可根据灯泡发亮的情况而直观地知道开关电源的工作情况。至于用多大功率的灯泡作假负载,有关杂志有过不少文章介绍,也有争论。有的用40W 的灯泡,有的说用60W 灯泡,更多的说用100W的灯泡,有的说在灯泡电路中串接场偏转线圈以防止开机瞬间的电流冲击,又有的说要根据电视机大小选择不同功率的灯泡等。这些说法都是根据检修实例总结出来的,但往往是针对某一个(或一些)机型的。选择不同功率的灯泡作假负载的原因,是因为开关电源(包
With ordinary lighting bulbs as a false load to overhaul the TV switching power supply, easy and can be based on the light bulbs and intuitively know the work of the switching power supply. As for how much power to make a false load of light bulbs, the magazine has had a lot of articles, but also controversial. Some with 40W bulbs, and some with 60W bulbs, say more with 100W bulbs, and some said that in the light bulb circuit connected in series field deflection coil to prevent the instantaneous current boot impact, while others say that according to the TV Machine size selection of different power bulbs and so on. These statements are based on maintenance examples summarized, but often for one (or some) models. The reason for choosing different power bulbs for false load is because switching power supply (package