过压

To protect the power component of electric welding machine,overtension and undertension protection are circuit designed.

焊机的功率器件设计了压欠压电路。

The primary inverter driving circuit,current foldback circuit,protection circuits for overheat and lowvoltage circuit are introduced specially.

重点介绍了一次逆变的驱动电路及、热、压电路。