• Electric test pencil screwdriver dual-purpose electrician test electric pen imported induction pen home repair tool neon bubble test pencil
  • Electric test pencil screwdriver dual-purpose electrician test electric pen imported induction pen home repair tool neon bubble test pencil
  • Electric test pencil screwdriver dual-purpose electrician test electric pen imported induction pen home repair tool neon bubble test pencil
  • Electric test pencil screwdriver dual-purpose electrician test electric pen imported induction pen home repair tool neon bubble test pencil
  • Electric test pencil screwdriver dual-purpose electrician test electric pen imported induction pen home repair tool neon bubble test pencil
Electric test pencil screwdriver dual-purpose electrician test electric pen imported induction pen home repair tool neon bubble test pencil
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Question: How to understand that using a test pencil will not cause harm to the human body

Answer: When using the test pencil, be sure to touch it with your hand...

Question: Electrician test pen. Which brand is more cost-effective

Answer: Its internal structure is a bulb with only two electrodes. The bulb is filled with neon gas, commonly known as a neon bulb. One pole is connected to the tip of the pen, and the other pole is connected in series with a high resistance and then connected to the pen...

Question: How to measure the zero line of the live wire with an electric pen

Answer: How to distinguish live and neutral wires with a tester...

Question: Test pencil problem

Answer: Answer: The letter above refers to direct testing, and the following refers to induction testing. Direct testing can see that there is a voltage display on the LCD screen of the electric pen. The induction can detect where the wire is broken without breaking the insulation.

Question: Schematic diagram of electric pen

Answer: The tip of the test pencil, the pen...

Question: The working principle of the electric tester.

Answer: It is composed of a neon tube (commonly known as a neon bulb), a resistor, a spring, etc. When in use, a charged body forms a potential difference between the human body and the earth through the electric pen, generating an electric field. The neon tube in the electric pen is...

Question: What does the electric pen test display 12v mean

Answer: There is a neon bulb in the pen body. If the neon bulb glows during the test, it means that the wire has electricity or is a fire...

Question: The tester is composed of several electronic components

Answer: VT1 uses junction FETs such as 3DJ6 or 3DJ7. It...

Question: What brand of electric pen is good

Answer: Its internal structure is a bulb with only two electrodes. The bulb is filled with neon gas, commonly known as a neon bulb. One pole is connected to the tip of the pen, and the other pole is connected in series with a high resistance and then connected to the pen...

Question: How to change the battery of the digital display tester

Answer: Reference information www.whgykj.com

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