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
Electricians and welders are specialized occupations, and those engaged in related work must hold a certification. Special operations certificates need to be re-evaluated every three years. One certificate per person is required, and it is valid nationwide. Exam format: personal reference, single person at a table, divided into theoretical and practical subjects, with full marks … Read more
Using a multimeter to measure circuit faults is one of our common methods. Here, I will discuss how to use a multimeter to check for circuit faults. When we check for circuit faults with a multimeter, we mainly use three ranges of the multimeter for measurement: First, use the resistance range to measure the resistance … Read more
Siemens Comprehensive + TIA Portal + EPLAN Electrical Drawing Video Recordings for Sale at Low Prices! Chuangkong Education Siemens Comprehensive Class Course Introduction A multimeter, also known as a multi-tester, is a multifunctional and multi-range measuring instrument. Generally, a multimeter can measure DC current, DC voltage, AC voltage, resistance, and audio level, and some can … Read more