| http://www.w3.org/ns/prov#value | - In addition to the d.c. load M, a circuit including a diode D1 and the resistor R2 is also connected to the chopper CH. The anode potential of the diode D1 drops to nearly zero in the conducting state of the chopper CH, while it rises in the non-conducting state of the chopper CH. Thus, whether the chopper CH is conducting or non-conducting can be precisely detected by detecting the anode potentia
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