电气主回路采用二极管可控硅无触点开关，电路开关时间迅速，准确。
The main electrical circuit adopts the diode thyristor (SCR) contactless switch, to make sure the circuit switch time rapidly, accurately.
文中对矿井提升机的电控系统，诸如电气传动方案、速度给定电路、故障监测及安全回路等问题进行了简要介绍。
This paper briefly introduces the electric control system of mine hoist, such as electric transmission way, speed giving circuit, fault detection etc.
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