[Tip] Click on the blue text below the titleElectrical Workers Home Follow For business cooperation, please contact QQ: 3350579506 For more exciting consultations, please follow Electrical Workers 365 (diangong365) Electrical Workers Home QQ Group: Group 1: 468193845 Group 2: 522898769 Electrical Workers Home 1. Selection of Analog and Digital Multimeters: 1, Mechanical analog multimeters have … Read more
The multimeter, also known as a multitester, is a multifunctional measuring instrument. Generally, a multimeter can measure DC current, DC voltage, AC voltage, resistance, and audio levels. Some can also measure AC current, capacitance, inductance, and parameters of semiconductors. It is a simple and practical measuring instrument. Nowadays, the most mainstream multimeters are digital multimeters, … Read more
Correctly using a multimeter can quickly and accurately identify faults, and prevent damage to both electrical devices and the multimeter itself. 1. Check Range Before Measuring Every time you pick up the probes to measure, always double-check whether the measurement category and range selection switch are set correctly. For safety, this habit must be developed. … Read more
A multimeter is an electrical tool that can be useful for engineers, electrical beginners, seasoned electricians, and ordinary residents alike. But do you really know how to use a multimeter? Today, I’ll introduce the multimeter from four aspects: Multimeter Brands, Understanding Multimeters in One Minute, Essential Tips for Using Multimeters, and Ten Key Experiences with … Read more
Content: 1 Introduction to Digital Multimeters Digital measuring instruments have become mainstream due to their high sensitivity, accuracy, clear display, strong overload capability, portability, and ease of use. Figure 1 below uses this type of digital multimeter as an example to briefly introduce its usage and precautions. 2 Appearance of Digital Multimeter 3 Illustration of … Read more
The multimeter, also known as a multifunction meter, three-in-one meter, or universal meter, is a versatile and multi-range measuring instrument. Generally, a multimeter can measure direct current, direct voltage, alternating voltage, resistance, and audio levels. Some models can also measure alternating current, capacitance, inductance, and certain parameters of semiconductors (such as β). 1. Structure of … Read more
Editor’s Note: This article is primarily compiled from Keysight’s related content on probes. Oscilloscopes have expanded their application range due to the existence of probes, enabling online testing and analysis of the electronic circuits being measured, as shown in the figure below: Function of Oscilloscope Probes The selection and use of probes need to consider … Read more
The oscilloscope is one of the most versatile tools in the toolbox of electronic engineers and enthusiasts. It converts voltage signals into waveforms that change over time, allowing users to observe related information such as signal frequency, amplitude, and noise. Modern Oscilloscopes Almost all application electronics, electrical laboratories, or workbenches have an oscilloscope, and many … Read more
When you open the aluminum alloy case of the ECU, you will see a PCB (a multilayer epoxy resin board) with various ICs (integrated circuits or commonly known as chips), resistors and capacitors the size of sesame seeds, power MOSFETs (field-effect transistors) and power diodes, as well as connectors for wiring harnesses, etc. The ECU … Read more
RS232 and RS485 have always been common interfaces in low voltage applications. Many people mention the differences between them, so today let’s learn about them together. 1. Physical Structure of the Interface 1. RS232 Interface: One of the computer communication interfaces, RS-232 usually appears in the form of 9 pins (DB-9) or 25 pins (DB-25). … Read more