Click “Read the Original Text” or scan the QR code to grab the order Correctly using a multimeter can not only quickly and accurately identify the fault location but also prevent damage to electrical equipment and the multimeter itself. 1. Before measuring, check the range; don’t measure without checking. Every time you pick up the … Read more
Whenever a circuit board fails to operate normally, and the wiring checks out, it is very likely that an electronic component has failed. To repair it, you must identify the faulty component and replace it. However, locating the faulty component requires technical skills and certain techniques. Today, I will teach you how to use a … Read more
Correctly using electrical measuring instruments is an essential skill for circuit maintenance and repair. What instrument should we choose for different usage scenarios? 1. Multimeter A multimeter is a versatile electrical measuring instrument, commonly used by electricians, electronics technicians, and in the production and maintenance of electrical equipment. It can measure direct current, direct voltage, … Read more
The measurement process of a digital multimeter involves converting the measured value into a direct current voltage signal through a conversion circuit, then converting the analog voltage into a digital quantity via an analog-to-digital (A/D) converter. The result is then counted by an electronic counter and displayed directly on the screen as a digital readout. … Read more
1. Measuring AC and DC Current Select the appropriate current measurement range based on the size of the current to be measured, and insert the red probe into the “A” current jack. When measuring DC, the red probe (inserted into the current jack) should contact the higher voltage side, and the black probe should contact … Read more
The multimeter distinguishes between live and neutral wires. Pointer Multimeter Distinguishes Live and Neutral Wires (1) Contact Measurement Method Set the multimeter switch to AC 250V or 500V. Connect the first probe to one end of the power supply and the second probe to ground (for example, on a water pipe, radiator, or damp ground). … Read more
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A multimeter is a versatile measuring tool that can measure voltage, resistance, current, capacitance, and short circuits, among other functions. The usage methods of different multimeters are generally similar. By mastering the principles, one can easily understand them. Below, I will demonstrate how to use a digital multimeter. Which is better, an analog multimeter or … Read more
Long press the QR code above to recognize, follow, and click “Skill Improvement” to obtain professional knowledge and free materials. Share this article to your friend circle and send a screenshot to the public account to participate in the lottery. The prize is a book at the end of the article. Before introducing the multimeter … Read more
1. Precautions for Using a Multimeter (1) Before using the multimeter, perform “mechanical zeroing”, which means setting the multimeter pointer to the zero voltage or zero current position when there is no measured electrical quantity. (2) During the use of the multimeter, do not touch the metal parts of the probes with your hands. This … Read more