Jun 04, 2026
Digital Multimeter Troubleshooting Guide
Digital Multimeter Troubleshooting Guide Troubleshooting a digital multimeter generally starts with the power supply. For example, after connecting the power su
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![What is the principle of non-contact electric pen]()
What is the principle of non-contact electric penThe principle of the non-contact electric pen is the principle of electromagnetic induction. When the non-contact electric pen is close to the live wiOct 13, 2022 -
![Introduction to the use of low voltage test pen]()
Introduction to the use of low voltage test penIn addition to measuring whether objects are charged, low-voltage electroscopes can also help people do some other measurements: (1) Judging the inducOct 13, 2022 -
![Operation method of digital display pen]()
Operation method of digital display pen1. Immediate measurement method The immediate measurement method refers to the measurement method in which the camera of the test pen directly touchesOct 13, 2022 -
![Test pen use skills]()
Test pen use skills1. Distinguish between AC and DC power This is one of the techniques of using a test pen, using a test pen to distinguish between AC power and DC poweOct 13, 2022 -
![How to use the high voltage test pen correctly]()
How to use the high voltage test pen correctly1. The high-voltage electroscope that is put into use must be an electroscope that has passed the electrical test, and the high-voltage electroscope mOct 13, 2022 -
![Matters needing attention when measuring high voltage with a test pen]()
Matters needing attention when measuring high voltage with a test pen1. Before using the high-voltage test pen to test the electricity, be sure to read the instruction manual carefully to check whether the test is over-Oct 13, 2022 -
![How to use the induction test pen?]()
How to use the induction test pen?1. Before using the test pen, first check whether there is a safety resistor in the test pen, and then visually check whether the test pen is damaged,Oct 13, 2022 -
![How to use the breakpoint test with the test pen]()
How to use the breakpoint test with the test pen1. During the test, you can press the test button on the electric pen with your hand, and then pass the test head of the pen tip of the electric pen tOct 13, 2022 -
![The correct way of holding and using the electric test pen]()
The correct way of holding and using the electric test pen1. Correct grip when using a low-voltage test pen Commonly used low-voltage test pen, master the two-grip test method. Pen-type test pen, the palm touOct 13, 2022 -
![Do you know the 6 uses of the electric test pen?]()
Do you know the 6 uses of the electric test pen?Pen function Function 1: Detect whether it is charged The finger touches the direct measurement button, the pen tip touches the measurement point, andOct 13, 2022 -
![The internal composition of the test pen]()
The internal composition of the test penA test pen is an electrical tool used to test whether the metal casing of a wire, electrical appliance or electrical equipment is live. The characteriOct 13, 2022 -
![How to see the voltage of the electric pen]()
How to see the voltage of the electric penDigital display test pen is a kind of test pen, belonging to electrical and electronic tools, used to test whether the wire is live. The digital displOct 13, 2022 -
![How to use the test pen accurately]()
How to use the test pen accurately① Before checking whether the electrical appliances and lines are electrified, you should first test them in a place with electricity to see if the teOct 13, 2022 -
![How to confirm the neutral and ground wires of the live wire with the electri...]()
How to confirm the neutral and ground wires of the live wire with the electri...1. Determine the live line and the neutral line One end of the screwdriver of the electric pen is in contact with one end of the wire, and the thumb iOct 13, 2022 -
![What are the types of test pens]()
What are the types of test pens1. According to the level of the measured voltage High-voltage test pen: used for 10kv and above projects, and it is the daily testing tool for electrOct 13, 2022 -
![What is the purpose of the test pen]()
What is the purpose of the test pen1. To determine whether the object is charged or not. Its internal structure is a light bulb with only two electrodes. The bulb is filled with neon gaOct 13, 2022 -
![How much voltage can a test pen measure?]()
How much voltage can a test pen measure?1. The voltage range of ordinary electric test pen is between 60V--500V. When it is lower than 60V, the neon tube of the electric test pen may not emiOct 13, 2022 -
![What is the structure of the test pen]()
What is the structure of the test penThe electric test pen is one of the necessary tools for electricians - - , it is used to measure whether the conductor is live or not. It is mainly usOct 13, 2022 -
![How to use the induction test pen and matters needing attention]()
How to use the induction test pen and matters needing attentionHow to use the test pen Commonly used low-voltage test pen, master the two-grip test method. Pen-type test pen, the palm touches the metal clip. ThumbOct 13, 2022 -
![Using a test pen to determine the in-phase and out-of-phase of AC power]()
Using a test pen to determine the in-phase and out-of-phase of AC powerThree-phase four-wire AC power supply, divided into A, B, C three-phase and neutral. If two wires are drawn from the power supply, when they are all dOct 13, 2022
