harmonic current detecting circuit 谐波电流检测电路
The current detecting circuit 6 detects a large current.
电流检测电路6检测大电流。
The constant current detecting circuit 5 detects a small current.
恒流检测电路5检测小电流。
When the small current is detected by the constant current detecting circuit 5, a signal is supplied to the control circuit 4.
当恒流检测电路5检测到小电流时，信号被提供给控制电路4。
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