The control to welding procedure is realized by a control circuit, and wire feed rate is regulated and controlled by speedgoverning circuit with the armature voltage negative feedback.
由控制电路实现焊接程序的控制,带电枢电压负反馈的调速电路控制和调节送丝速度。
2
There were higher failure rate, large maintenance and poor characteristics of speedgoverning due to using slip speed governing of motors for feed - ers of coal for boilers.