Research on compound type galvanometer verification device

摘要

Galvanometer is used for zero or balance indicating, plays an important role in the electrical, temperature and chemical metrology area. As a result of the existing galvanometer verification device can only work for current type galvanometer measurement, most laboratory can't measure voltage type galvanometer. In this paper, we designed a compound type galvanometer verification device which can both measure internal resistance, external critical resistance, current dividing value of current type galvanometer and internal resistance, voltage dividing value of voltage type galvanometer. The device with fully functional, reliable performance, small size and good portability, can measure 2 grade galvanometer and the below in the laboratory environment or on site.