Detector having self-calibration function.

摘要

A detector for detecting a physical quantity as a quantity of electricity has a detection portion (1), a portion (2) for stimulating the detection portion and a signal processing portion (4), wherein a calibrating signal is supplied from the signal processing portion (4) to the detection portion (1) via the stimulating portion (2) so as to measure a specific response of the detection portion whereby a self-calibration and a correction of the characteristics are performed in accordance with the amount of the change in the response.