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
Comprehensive Resources for Primary School Science Public Account: Primary School Science Network Micro Lesson Collection Digital Textbooks Teaching Materials and Lesson Plans Selected Exam Papers Special Grade Teachers Qingdao Science Su Education Edition Science Science Experiments Activity Manuals Teaching Plans Experiment Plans Science Clubs Experiment Videos Mind Maps Resource Collections First Grade Resources Second Grade … Read more
Insulation resistance refers to the ability of electrical equipment’s insulation material to isolate current, which is an important indicator in safety testing of equipment. It can determine whether the insulator is intact, and identify defects such as moisture, insulation degradation, and insulation breakdown. Therefore, before using electrical equipment, it is essential to use an insulation … Read more
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
Search on WeChat Technical Training 1. Correct Usage of Multimeter To use a multimeter correctly, familiarize yourself with the dial. Adjust the two zero position knobs gently. Choose the correct terminals, and insert the red and black probes into the appropriate holes. Rotate the switch to the correct gear, and ensure the range is selected … Read more
Previously, we discussed common analog and digital electronics used by electronic engineers, which received a lot of attention from our fans. Today, we will mainly talk about the measurement instruments commonly used by electronic engineers, hoping to help our friends. Let’s take a look together! 1. Multimeter A multimeter is one of the most basic … Read more
For different channel input signals, sometimes we want one channel signal to meet one condition while another channel waveform meets a different condition, achieving a logical “AND” combination for the channels. For example, how can we trigger channel 1 on a high level while triggering channel 2 on a rising edge? The ZDS2022 oscilloscope not … Read more
Hello everyone, in this video we will introduce the most commonly used Lissajous measurement method in X-Y mode. First, we will connect two sine wave signals with the same frequency but different phases to Channel 1 and Channel 2. After capturing the waveform, you can see that the phase difference between the two signals is … Read more
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