有4个网友回答
变压器输出端﹢整流器，不是直流焊机。
只有 BX1动铁芯式、BX2同体式、BX3动圈芯式、BX6抽头式工频交流焊条手弧焊焊机，输出端~ ~ 两个接线柱接上额定电流大于焊机输出电流二倍，耐压超过输出端电压的整流器，可以改成最简易的硅整流直流弧焊机。
但是这种焊机效率太低，工频交流焊机由于铜损铁损，本身功率因数就很低，加上整流部分耗电，功率因数会低于0.5的，很不经济。焊机没有电抗器输出电流稳定性也会很差。
早已淘汰的ZXE1 ZX1焊机是三相交流电整流后输出的直流弧焊机，因功率因数低，耗电量大，输出电流受输入电压波动较大，不能用于精细零部件及要求较高部件焊接，早已淘汰。
焊机是在短路状态下工作的，因此需要较大的漏磁。普通变压器接上整流装置，在焊条接触工件引弧，短路过程会烧坏变压器及整流装置的，根本无法用于焊接。
因此变压器加整流器不是直流焊机。只能算是直流电源。
是的，简单的直流焊机就是这个原理，交流电升压之后用整流器 整流就变成了直流电输出。
简单的原理就是这样的。实际上还要加上相应的控制和保护电路。
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