How to use a digital multimeter to judge whether the line or device is charged or not
The digital AC voltage block is very sensitive, even if there is a small induced voltage around, it can be displayed. According to this feature, it can be used as a test pen. The usage is as follows: turn the multimeter to the AC20V block, the black test lead is suspended, and the red test lead is in contact with the measured route or device. At this time, the multimeter will display. There are different displays), indicating that the line or device is charged, if the display is zero or very small, indicating that the line or device is not charged.
