| 摘要 |
PROBLEM TO BE SOLVED: To provide a current detection device capable of reducing relative errors between a plurality of current detection circuits provided for each load circuit. SOLUTION: A constant current circuit 105 is serially connected to a shunt resistor RSa for detecting a current of a load 101a to determine the output of an operational amplifier OPa when a constant current value is made to flow through the shunt resistor RSa. The constant current circuit 105 is serially connected to a shunt resistor RSb for detecting a current of a load 101b to determine the output of an operational amplifier OPb when a constant current value is made to flow through the shunt resistor RSb, in other words, a potential difference common with the operational amplifier OPa is input. Correction values for correcting relative errors between the operational amplifier OPa and the operational amplifier OPb are set on the basis of the output of the operational amplifier OPa and the operational amplifier OPb when the common potential difference is input. COPYRIGHT: (C)2011,JPO&INPIT
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