目前在电工技术的许多领域里广泛的使用值流电位计。电位计示值十分稳定而又准确,能够丝毫不爽地来测量电动势或电压,因此.这种仪器在许多情况下是不可缺少的。可是,电位计的测量上限通常不超过2伏,这在很多情况下是不够的。当使用分压器时,被测电压势必接在电阻 Current value potentiometers are widely used in many areas of electrotechnical engineering. Potentiometer shows the value is very stable and accurate, can be the most uncomfortable to measure the electromotive force or voltage, so this instrument in many cases is indispensable. However, the upper limit of the potentiometer measurement usually does not exceed 2 volts, which in many cases is not enough. When using a voltage divider, the measured voltage is bound to the resistance