时间继电器原理

Principle of time relay

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1
在交流电路中常采用空气阻尼型时间继电器，它是利用空气通过小孔节流的原理来获得延时动作的。
Often in ac circuit by air damping model time relay, it is to use the principle of air through orifices throttling to obtain delay action.
2
早期在交流电路中常采用空气阻尼型时间继电器，它是利用空气通过小孔节流的原理来获得延时动作的。
Early in the circuit often USES air damping model time relay, it is to use the principle of air through orifices throttling to obtain delay action.
3
时间继电器是一种利用电磁原理或机械原理实现延时控制的控制电器。
Time relay is a use of electromagnetic principle or mechanical theory to realize delay control control electric appliance.

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