指针式万用表的调零电位器在表头分流电路中的位置对欧姆调零影响的分析

The Analysis Of Effect On Ohm Zero Adjustment When Zero Potentiometer Of The Analog Mult Imeter Is At The Different Positions In Header Shunt Circuit

通过对指针式万用表中的调零电位器在表头分流电路中不同安装位置电阻值的理论计算,从理论上阐明了万用表的调零电位器在表头分流电路中不同安装位置下的调零条件。进一步分析了欧姆调零效果的影响和调零电位器安装错误而造成不能欧姆调零的主要原因,以期为实训教学工作提供技术支持。

The theoretical calculation of different installation position in resistance and illuminates the multimeter to zero theoretically potentiometer in the header shunt circuit under different installation position of zero,in which through zero potentiometer in the header of pointer multimeter shunt circuit. Further it analyzed the influence on the effect of zero and zero pot installation errors in which cause the main of can't ohm zero,in which to provide technical support for practice teaching.