Electronic Engineering

Introduction to the School of Optoelectronic and Communication Engineering at Xiamen University of Technology

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Introduction to the School of Optoelectronic and Communication Engineering at Xiamen University of Technology

The School of Optoelectronic and Communication Engineering originated from the Department of Electronics and Electrical Engineering established in 2003 and the Department of Mathematics and Physics established in 2005. To promote the integration and development of disciplines and majors, it was reorganized in November 2012. The school includes the Department of Electronic Engineering, Department of … Read more

From Circuit Boards to Ink Wash Landscapes: The New Artistic Awakening of Retired Engineer Liu Xiaoping

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From Circuit Boards to Ink Wash Landscapes: The New Artistic Awakening of Retired Engineer Liu Xiaoping

Click the blue text to follow us In Liu Xiaoping’s studio on Tunxi Old Street, the 63-year-old retired electronic engineer dips his brush in ink, and the mist of Huangshan Mountain quietly spreads on rice paper. On his desk, there are no circuit diagrams, only ink wash landscapes. His life trajectory resembles a peculiar function … Read more

Practical Oscilloscope Manual Collection: Your Guide to Testing and Measurement

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Practical Oscilloscope Manual Collection: Your Guide to Testing and Measurement

The oscilloscope is an essential tool for all electronic engineers. This document shares the basic structure, working principles, and measurement operations of oscilloscopes, and introduces methods and techniques for using oscilloscopes in scenarios such as signal measurement and power integrity testing. Table of Contents: Illustrated Guide to Oscilloscope Usage and Application Techniques, “In-Depth Understanding of … Read more

Electronic Engineers – PCB Design

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Electronic Engineers - PCB Design

Electronic Engineers and PCB Design PCB design is an indispensable part of modern electronic engineering. As an electronic engineer, mastering PCB design skills is an important aspect of one’s career. This article will introduce the basic concepts of PCB design, the design process, and common design software. 1. Basic Concepts of PCB Design A printed … Read more

Definition of RS232 Serial Port

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Definition of RS232 Serial Port

In serial communication, both parties are required to use a standard interface, allowing different devices to connect easily for communication. The RS-232 communication standard is defined by a 25-pin interface and was widely used in early computers such as PC or XT models. However, in models after the AT series, a simplified 9-pin version is … Read more

Solving Issues in RS485 Applications

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Solving Issues in RS485 Applications

Click the image above to follow “Changxue Electronics” for easy learning of electronic knowledge. Changxue Electronics Subscription Account Daily updates on technical articles in the electronics industry and the latest information on microcontrollers for easy learning anytime, anywhere. 1. Signal Reflection Issues During communication, when there is an impedance mismatch or discontinuity, signal reflection occurs, … Read more

How to Stabilize Waveform Signals from Two Different Signal Sources on an Oscilloscope?

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How to Stabilize Waveform Signals from Two Different Signal Sources on an Oscilloscope?

In the field of electronic engineering, oscilloscopes are important tools for analyzing signal characteristics. When it is necessary to observe and stabilize the waveforms from two different signal sources simultaneously, how can electronic engineers achieve this? Below are the specific steps to efficiently stabilize the display of both signals on the oscilloscope. 1. Check Signal … Read more

How Oscilloscopes Generate Positive and Negative Pulses with Varying Widths

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How Oscilloscopes Generate Positive and Negative Pulses with Varying Widths

In electronic measuring instruments, oscilloscopes are undoubtedly a favorite among electronic engineers, as they visually display the waveform of electrical signals and generate pulse signals. When using an oscilloscope, various issues may arise, one of which is how to generate positive and negative pulse signals with different widths. How can this be done? 1. Set … Read more

How Many Steps Are Needed to Make a Chip?

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How Many Steps Are Needed to Make a Chip?

The chip is a pinnacle of human technology, embodying vast amounts of wisdom. The chip supply chain is extremely complex; spending a hundred million may buy a luxury apartment, but it may not necessarily support a chip from design to mass production. This is especially true for chips that use advanced processes, where the costs … Read more

What Are The Layers In A PCB Circuit? What Are Their Functions?

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What Are The Layers In A PCB Circuit? What Are Their Functions?

In the field of electronic engineering, printed circuit boards (PCBs) are indispensable components that carry the connections and communication between electronic components. A PCB is not a single-layer structure; it is composed of multiple layers, each with its specific functions and roles. Let’s discuss them below. 1. Mechanical Layer Definition: The mechanical layer represents the … Read more