Patent ID: 9140734
Filing Date: 2015-09-22
Classification: G01R

Abstract:
1. A measurement apparatus that measures a resistance value of an element under measurement, comprising: a serial resistor provided in series with the element under measurement; a switching section that sequentially selects ends of a serial circuit including the element under measurement and the serial resistor, and ends of the serial resistor; an applying section that applies an application voltage or application current corresponding to a preset setting value, to each of the ends selected sequentially by the switching section; a measuring section that, for each of the ends selected sequentially by the switching section, measures current when the applying section applies the application voltage corresponding to the setting value and measures voltage when the applying section applies the application current corresponding to the setting value; and a resistance calculating section that calculates the resistance value of the element under measurement, based on either the setting values set sequentially in the applying section or measured values measured sequentially by the measuring section for each of the ends selected sequentially by the switching section, wherein an error ratio of the measured values with respect to a level actually input to the measuring section is less than an error ratio of the setting values with respect to a level actually output by the applying section, the applying section applies the same application current or application voltage corresponding to the same setting value to the ends sequentially selected by the switching section, and the resistance calculating section calculates the resistance value of the element under measurement based on the measured values sequentially measured by the measuring section.