摘要
介绍一种低廉的仪表用电压电流校准仪，它提供的直流电压电流输出在全量程范围内皆具有大约０．２％的精确度，适用于维修检查许多普通的仪器仪表。
This paper introduces a low-price voltage-current calibrator of instrument, it's suitable for maintenance overhaul the moust instrumetion and DC-output of voltage-current having about 0.2% precision in full-range.
