At present the control and protection of relay of electromotor USES combinedcircuit, which has the limitation of weak control and faulty protecting function.
目前电动机的控制及保护的采用的组合式电路存在控制功能不强、保护功能不完善的缺陷。
2
Combined with the problems during the experiment, design a improved testing circuit of Direct Current Attenuation Method.
结合试验过程中遇到的问题，给出了改进的直流衰减法测试电路。
3
The computer data acquisition system is composed of sensors, data acquisition circuits, serial communication controlling circuit, combined power supply and computer.