Direct current electromagnet is extensively used as electromagnet controllingelement. PTC element is a ceramic thermistor with positive temperature coefficient.
直流电磁铁是广泛应用的电磁控制元件,PT C元件是具有正温度系数特性的半导体陶瓷热敏电阻。
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Considering our country's present fact in GTO's research and application, we use GTO as a aid-controllingelement. So, a large thyristor can be controlled by a small GTO.
In any fluid handling system, valves are the controllingelement: starting or stopping flow, regulating or throttling flow, preventing backflow, or relieving and regulating pressure.