MEASURING DEVICE

To arbitrarily determine a resistance value of a current detection resistor in measurement of a resistance value of a resistor using the current detection resistor.SOLUTION: A measuring device includes: a first resistor; a second resistor connected in series with the first resistor; a first power supply that supplies power only to the first resistor from among the first resistor and the second resistor; a second power supply that supplies power to a series circuit including the first resistor and the second resistor; a first voltage measuring instrument that measures voltage across the first resistor; a second voltage measuring instrument that measures voltage across the second resistor; and a calculation section that performs predetermined calculation processing using a measurement value of each of the first voltage measuring instrument and the second voltage measuring instrument during a period when power is not supplied to the first resistor by the first power supply and power is supplied to the series circuit by the second power supply.SELECTED DRAWING: Figure 1 【課題】電流検出用抵抗を用いた抵抗体の抵抗値の測定において、電流検出用抵抗の抵抗値を任意に定めることを可能とする。【解決手段】測定装置は、第１の抵抗体と、第１の抵抗体に直列に接続された第２の抵抗体と、第１の抵抗体及び前記第２の抵抗体のうち、第１の抵抗体にのみ電力を供給する第１の電源と、第１の抵抗体及び前記第２の抵抗体を含む直列回路に電力を供給する第２の電源と、第１の抵抗体の両端電圧を測定する第１の電圧測定器と、第２の抵抗体の両端電圧を測定する第２の電圧測定器と、第１の電源によって前記第１の抵抗体に電力が供給されない期間であり且つ前記第２の電源によって前記直列回路に電力が供給されている期間における、前記第１の電圧測定器及び前記第２の電圧測定器のそれぞれの測定値を用いた所定の演算処理を行う演算部と、を含む。【選択図】図１