搜索 - 科创

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昨天玩拉弧的时候，不知道怎么地电弧越来越小，然后就没有了，再就是一个场管发热，另一个不热，不会检修，留到今天。今天也没有什么好办法，只好一个元件一个元件的检修。检修过程：用电烙铁融化一个元件的一只脚的...

用两枚IRF640做的····手头有一个12V5A的电源，万用表显示拉弧最长的时候大概有3A的电流，，，也就是30+W。。。额··貌似我又不会插图了····--先发出来看看图有木有--

单位最近用的都是飞利浦的HV-BLOCK灯，最小的70W，看这小，但是亮度是非常不错的。于是(*^__^*) 嘻嘻……准备做个便携式的手提灯！停停做做，终于做好了！回答楼下提问，那个金属板是用我家剪子...

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