电子电位差计输入端装置滤波器是抗串模干扰的有效措施之一,如将滤波器阻容元件进行适当的配接,还可改善仪表的阻尼特性.由于其电路结构简单,出故障情况不多,所以在仪表检修中往往被忽视,而误认为是其它电路故障致使检修工作走弯路.本文介绍几个实例及体会,供参考. 例一 XWC-101型、量程为0～10 mV新表一台.仪表示值偏低,输入10 mV电势,指针仅指到刻度标尺的1/3左右,需输入33 mV电势仪表才能指示满刻度. Electronic Potentiometer input device filter is an effective anti-series interference measures, such as the filter RC components properly connected, but also improve the damping characteristics of the instrument due to its circuit structure is simple, fault conditions Not many, so in the instrument maintenance is often overlooked, but mistakenly believe that other circuit failure caused the maintenance work detours.This article describes a few examples and experience for reference. Example XWC-101-type range of 0 ~ 10 mV new Table I. Instrument shows low value, enter the 10 mV potential, the pointer refers only to the scale of about 1/3, need to enter 33 mV potential meter to indicate full scale.