过压

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

为保护焊机功率器件设计了过压欠压路。

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

重点介绍了一次驱动路及过、过热、过压保护路。