Rotary armature resistance measuring apparatus
专利汇可以提供Rotary armature resistance measuring apparatus专利检索，专利查询，专利分析的服务。并且PURPOSE: To continuously measure the resistance of winding over the entire periphery thereof while rotating an armature, and to enable automatic judgment, by starting the operation of an A/D converter by the output of a reflection type optical sensor for detecting the position of a commutator copper piece.
CONSTITUTION: A constant current is supplied to the commutator copper piece 8 opposed to a current contact element 10 from a constant current circuit 17 and a voltage contact element 12 measures voltage drop 11 due to the resistance of winding to input the same to an A/D converter 21 through a minute voltage amplifier 18 and an input range change-over resistor 20. On the other hand, the output of a reflection type optical sensor 14 fixed almost directly under the commutator copper piece 13 is inputted to a signal processor circuit 23 through an amplifier unit 22 and generates an A/D conversion start signal 24 when two terminal contact elements come to almost the center of the commutator copper piece section. A/D conversion output is displayed by a resistance display device 27 and, at the same time, inputted to upper and lower limit value comparators 28, 29 while upper and lower limit value abnormal signals and an over-range signal 32 are inputted to an inferiority hold circuit 35 through a logical sum circuit 33 and inferior contact output 36 is outputted to an inspection machine.
COPYRIGHT: (C)1985,JPO&Japio，下面是Rotary armature resistance measuring apparatus专利的具体信息内容。
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