用定值电阻代替滑线变阻器，用分压器调节电压，可使二极管反向特性的测量更加方便。
Sliding resistance was replaced by the fixed value resistance, and potentiometer was used to adjust volt, it could make measurement of diode reverse characteristic more convenient.
若在调节电阻值的过程中，表针有跳动现象，则说明该电位器存在接触不良的故障。
If in the regulation of the resistance value of the process, hand beating phenomenon, the existence of the fault of bad contact potentiometer.
通过调节电阻为较高的值，因此能够保持在SCR从击发直到AC电压达到其峰值的正方向。
By adjusting the resistor to a higher value, it is possible to keep the SCR from firing until the ac voltage has reached its peak value in the positive direction.
应用推荐