Working of Voltage Tester/ Voltage Pen Explained with 3D Animation

3D Animation Tech

Working of Voltage Tester/ Voltage Pen Explained with 3D Animation... Like❣️ comments Share . #voltagetester #voltagetesters #voltagetesterpen #neontester #voltagetester3d #3danimation #3delectrical #diyelectrical  #electrical #electrician #electricians #electricalwork #electricalworks #electricalstudent #electricalstudents #electricalengineering #electricalengineer #electricaltips #electricalwiring

Transcript

00:00The operating principle of an electric tester is quite simple.

00:03By simply plugging it in, you can determine the presence of electricity.

00:07The inventor of the electric tester was indeed ingenious.

00:10However, one might wonder why it is necessary to touch the metal electrode at the end with your hand.

00:16Wouldn't that result in an electric shock?

00:18To understand this, we need to disassemble the tester and examine its internal structure.

00:23It primarily consists of a metal pen tip, a resistor, an indicator light, a spring,

00:28a metal tail, and an insulating shell.

00:31When used directly, the tester will not show any reaction

00:34because there is no voltage difference between the neutral wire and the ground.

00:38It is only when the metal tail is touched that a circuit is completed between the live wire,

00:43the tester, the human body, and the ground.

00:46At this moment, the indicator light at the base of the tester illuminates,

00:49indicating the presence of electricity.

00:52So why don't we feel an electric shock when touching the metal part of the tester?

00:56This is because the resistor within the 220 volt circuit limits the current.

01:01According to Ohm's law, expressed as V equals sign IR,

01:06it can be deduced that the current passing through the human body will not exceed 0.22 mA,

01:12which is why it is not perceptible.

01:14Have you grasped the concept?

Category

Transcript

Recommended