判断投影机交直流方法2

FIRSTBLUEKSY

从点灯板上也可以大致判断：直流灯泡的点火板，一般只用1到2个（型号相同）大功率Mos管，做斩波用；交流灯泡点灯板的Mos管要有5到6个，其中4只相同型号的Mos管用于桥臂，1到2个用于斩波。有个小口决:1正2负,正的是灯泡的尾,负的是为壁上的接点,这个是基本的灯泡都是这样子接的,不信你可以把灯泡线的插头反过来看一下,上面有两个小字就是1.2之分,但也有个别灯泡是2正1负,就是SHP270W的灯泡也就是ASKC300的灯泡,目前就只有见过这个灯泡是反过来的

dingleiz

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niuigb

david_wu23

好文章,一定要頂的啦

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h614201

顶一下

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em48

tianlexu

李波浪

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hongxingyoung