Current measuring apparatus, image forming apparatus, conveyance apparatus and method for measuring current
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United States of America Patent
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Apr 10, 2018
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app pub date -
Mar 7, 2016
filing date -
Mar 20, 2015
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Abstract
There is provided a current measuring apparatus for measuring a first current used for estimating a load torque of the motor. The current measuring apparatus may include a detection unit configured to detect a first voltage, an amplification unit including a first input terminal at which the second signal is input, a second input terminal coupled to a first resistor and a second resistor by which an amplification factor is defined, and an output terminal for outputting a third signal, an input unit configured to input a second voltage at the first input terminal, a storage unit configured to store a third voltage an acquisition unit configured to acquire a fourth voltage, and a calculation unit configured to calculate the first current based on a difference between the third voltage and the fourth voltage.
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