ow to use the AC voltage test pen?
The electrician's most familiar tool is the electric pen, which is used to determine whether an object is charged or not.
Its interior is made of a neon bubble with two electrodes. The neon bubble is filled with the inert gas neon, and when the neon bubble has a voltage, it will emit light.
One pole is connected to the tip of the pen, and the other pole is connected to the other end of the pen with a high resistance in series. When the voltage between the two poles of the neon bubble reaches a certain value, a glow is generated between the two poles, and the intensity of the glow is proportional to the voltage between the two poles.
When the voltage of the charged body to the ground is greater than the glow voltage of the neon bulb, and the tip of the test pen touches it, the other end is grounded through the human body, so the test pen will emit light.
