晶闸管式弧焊电源集成同步移相触发电路研制

Development of the integrated synchronous trigger circuit or SCR arc welding power source

利用ＴＣＡ７８５晶闸管移相触发器集成电路芯片，研制了一种适用于晶闸管弧焊电源的集成控制电路，它集同步检测、移相脉冲形成、保护为一体，所需外围器件最少，装调容易，抗干扰能力强，是一种性能价格比极高的集成触发电路。

A integrated control circuit adapted for SCR arc welding power source by using TCA785 SCR phaseshift trigger integrated circuit chip has been developed. The control circuit are comprehensive of Synchronous detection, phaseshift Pulses formation and Protection in one piece. In addition, it has strong anti-interference ability, easy assembling and debugging, Hence it is a high performance-cost ratio integrated trigger circuit.