This paper introduces a new AC voltage adjustment device controlling by optocoupler relay and gives detailed analysis of it's circuit.
对一种用光耦合继电器控制的交流调压器进行了介绍和分析，给出了该调压器的特点。
It adopts SCR with large power to establish the voltage adjustment circuit, so the AC motor can be started with low voltage.
它采用大功率的SCR组成电压调节电路，这样交流电动机就可以低压起动。
It adopts SCR with large power to establish the voltage adjustment circuit, so the AC motor can be started with low voltage.
它采用大功率的SCR组成电压调节电路，这样交流电动机就可以低压起动。
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