本文对电脑型可控硅焊机的软件触发技术进行了深入的研究。提出了利用 CTC 的一个通道进行重复定时的定时方式,这种定时方式具有硬件电路简单,动态响应灵敏度高的特点。采取软件触发后,使焊机的调试工作及触发电路大为简化。这种软件触发技术不仅可以应用在电脑型可控硅焊机上,也可以应用到其它微机控制的可控硅整流电路中。 In this paper, computer-controlled silicon welding machine software triggering technology conducted in-depth study. This paper presents a timing method that uses CTC ’s one channel to repeat the timing. This timing method has the characteristics of simple hardware circuit and high dynamic response sensitivity. After the software is triggered, the commissioning of the welding machine and the triggering circuit are greatly simplified. This kind of software triggering technology can not only be used in computer controlled silicon welding machine, but also can be applied to other microcomputer controlled thyristor rectifier circuit.