Welding primary windings adopts two-way water-cooled silicon-controlledrectifier control, ensure that current output balance, and reliable.
焊接初级回路采用双向水冷可控硅控制，保证电流输出平衡，可靠。
2
DC power supply cabinet: three-phase silicon-controlledrectifier (SCR), computer digital pulse triggers plate, flat-wave inductor, L, C filter, etc.
直流电源柜：三相可控硅整流桥（SCR）、计算机数字脉冲触发板、平波电感、L、C滤波器等组成。
3
In the main circuit, the inverse parallel couple SCRs (silicon-controlledrectifier) are used as a electric switch, switching the transformer of resistance spot welding.