This permits the SCR to control only half of the AC positive wave; half voltage is applied to the load when the SCR initially fires.
这使得SCR来控制交流正波的一半，另一半的电压施加到在SCR初始触发该负载。
This permits the SCR to control only half of the AC positive wave; half voltage is applied to the load when the SCR initially fires.
这使得SCR来控制交流正波的一半，另一半的电压施加到在SCR初始触发该负载。
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