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27 天
交流电焊机控制电路图分析
交流电焊机实质上是一种特殊的降压变压器,能够将220V和380V交流电变为低压的交流电输出。它主要有两种工作原理:一种是通过变压器将低压高流的交流电变压升压为高压低流的直流电,然后再通过整流器将直流电转化为恒定电流输出,最后通过电极夹将电流 ...
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