Digital multimeters have always been essential measuring instruments for production testing engineers, R&D engineers, and electrical maintenance personnel. It is important to understand how to choose a suitable multimeter. This article will detail the options that are often overlooked when selecting a multimeter, as well as the types and selection of multimeter probes. Factors Often … Read more
A digital multimeter is an electronic instrument used for electrical measurements. It can have many special functions, but its main functions are measuring voltage, resistance, and current. As a modern multipurpose electronic measuring instrument, it is primarily used in the fields of physics, electricity, and electronics. In daily life, you may encounter situations where household … Read more
In order to help students memorize the content of the exam questions and to ensure that they pass the initial or retest as soon as possible, we have been working hard to improve our service quality. Given the large number of low-voltage electrician exam questions and the difficulty students have in remembering them, we have … Read more
A multimeter is currently the most popular and commonly used portable measuring instrument that can perform various measurement tasks, replacing certain specialized instruments to accomplish multiple electronic and electrical measurement tasks, achieving multiple uses with one device. Classification of Multimeters Multimeters are classified into analog (pointer type) and digital types. Common analog multimeters include MF4, … Read more
A digital multimeter, a versatile electronic measuring instrument, typically includes functions such as an ammeter, voltmeter, and ohmmeter. It is sometimes referred to as a multitester, multi-tester, multimeter, or three-in-one meter. 1. Buzzer Test Before using the multimeter, perform a buzzer test to ensure the multimeter is functioning properly. Connect the red probe to the … Read more
In the modern industrial field, precise measuring tools are crucial for ensuring production safety, improving product quality, and achieving efficient operations. The industrial-grade true RMS digital multimeter, as a key tool in the field of electronic measurement, has gradually become an essential tool for electronic engineers and electricians due to its multifunctionality and high precision. … Read more
A multimeter is a multifunctional portable electrical measuring instrument with multiple ranges, mainly categorized into analog multimeters (see Figure-1) and digital multimeters. Among them, analog multimeters are suitable for measuring voltage, current, and resistance in high-power circuits, and can determine the quality of components such as diodes, transistors, thyristors, and electrolytic capacitors, as well as … Read more
In electronic measurements, the digital multimeter (DMM) is a favorite among many electronic engineers. Without a digital multimeter, projects cannot be completed. However, when first learning to use a digital multimeter, it is easy to misunderstand how to read its digits. Let’s learn how to read it! 1. Integer Digit Count Definition: The digits that … Read more
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A digital multimeter can be used to measure DC and AC voltage, DC and AC current, resistance, capacitance, frequency, batteries, diodes, and more. The overall circuit design is centered around a large-scale integrated dual-slope A/D converter, equipped with full-process overload protection circuits, making it a high-performance tool and an essential instrument for electricians. 1. Precautions … Read more