9 篇文章
In-depth analysis of lithium battery charging protection circuit principles, TP4056 charging management chip practical application, overcharge and over-discharge protection design, with circuit diagrams and common troubleshooting
Electromagnetic interference (EMI) from switching power supplies is a hardware engineer's nightmare. This article shares practical EMI suppression techniques from three dimensions: filtering, layout, and shielding, helping your design pass EMC certification.
Introduction. When I first got my oscilloscope, I thought as long as I could see the waveform, everything was fine. Until one day I was debugging a strange SPI communication issue - the waveform 'looked normal' but the device just wouldn't work. Later, a senior engineer told me: 'You're using the oscilloscope as a multimeter!' Today we're going to talk about advanced oscilloscope techniques. Not teaching you how to turn it on and see waveforms, but how to make the oscilloscope help you 'read' signals. After mastering these techniques, you'll find that the same equipment can reveal completely different amounts of information. What do you need to prepare? Items...
✅ What is EDID? EDID (Extended Display Identification Data) is a data structure sent by displays (including monitors, TVs, projectors) to video sources (such as computers, HDMI devices) to describe their core capabilities: - Supported resolutions (such as 1920x1080, 3840x2160) - Refresh rates (such as 60Hz, 120Hz) - Audio formats (such as stereo, 5.1, Dolby) -...
Type-A, Type-B, Type-C, Micro, Mini all versions USB pinout explained in one diagram: covering USB 1.0→3.2 speed comparison, power delivery differences, wire color definitions and soldering practical guide, essential quick reference for engineers.
In today's connected world, we're all linked together. The pinout definitions for the most basic RJ45 interface (commonly called crystal head) may be essential reference material for engineering or troubleshooting. However, the POE protocol built on RJ45 is also frequently used in video surveillance, device power supply, and other applications. This article briefly summarizes the different pin definitions in RJ45 interfaces and POE specifications to help engineers with quick reference.
Introduction to IP codes - an international standard for evaluating product protection against water and foreign object intrusion. When helping customers design products, we often mention the waterproof rating, so it's necessary to explain IP codes. IP code is an IEC (International Electrotechnical Commission) standard, which is why you can also see IP codes on smartphones, cameras, and other products. This standard provides consumers with a way to see through vague marketing terms and understand the degree of protection for a given product. Code Explanation IPX4 is an IP code or ingress protection marking...
This article provides a detailed introduction to the typical 9-pin RS232 pinout, also known as the DB-9 connector, along with RS-232 related characteristics, working principles, and usage limitations.
Quick reference for AWG SWG wire gauge current ratings: covers AWG 0000 to 40 full specifications, includes GB 4706 safety standards and stranded wire calculation formulas, plus 11 practical engineering wire selection scenarios.