The article analyses control circuit of relaycontactor in electric circuit experiment and puts forward to control it with logic function.
对电路实验中继电接触器控制线路进行了研究分析，并提出由逻辑函数实现其控制的方法。
2
By linking the DC relaycontactor with power electronic device, the DC hybrid switch apparatus without switching arcing was designed and accomplished.
采用直流开关电器与电力电子器件相结合方式，设计并实现了能够实现无弧通断的直流混合开关电器。
3
The original K - F - D system was replaced by SCR - D system for main transmission, while PLC was substituted for the original relaycontactor control mede.