Proteus is a program with a unique capability to simulate the operation of microcontroller circuits. Another excellent feature, similar to other programs, is the design of printed patterns. Sometimes the devices provided by the program are not available.Proteus allows users to create custom components, which is crucial for designs using special devices or new chips. … Read more
1. Problem Description A certain dashcam requires an external adapter for testing. During power-on testing, it was found to exceed standards, specifically at frequencies of 84MHz, 144MHz, and 168MHz. The cause of the excessive radiation needs to be analyzed, and corresponding countermeasures should be provided. The radiation test data is as follows:2. Analysis of Radiation … Read more
1. Layout 10 Rules for Component Layout: 1. Follow the principle of “large first, small later; difficult first, easy later,” meaning that important circuit units and core components should be prioritized in layout. 2. The layout should refer to the schematic diagram, arranging major components according to the main signal flow direction of the board. … Read more
A good circuit board not only needs to achieve the functionality of the circuit design but also must consider electrical characteristics such as EMI, EMC, ESD (Electrostatic Discharge), and signal integrity. Additionally, mechanical structure and heat dissipation issues for high-power chips must be taken into account. On this basis, the aesthetic aspect of the circuit … Read more
In high-speed digital signal processing (DSP) systems, electromagnetic interference (EMI) is a critical issue that cannot be overlooked. Due to the high-frequency signal processing and complex circuit layouts involved in DSP systems, the electromagnetic environment becomes more complicated, easily leading to signal distortion, system instability, and even functional failure. Therefore, engineers need to understand the … Read more
1. PCB Layout 1. Follow the layout principle of “big first, small later, difficult first, easy later”, meaning that important unit circuits and core components should be prioritized in the layout. 2. The layout must refer to the schematic diagram and place components according to the signal flow rules of the schematic. 3. The arrangement … Read more
PCB, also known as Printed Circuit Board, enables the connection of electronic components and the realization of functions. It is also an important part of power circuit design. This article will introduce the basic rules for PCB layout and wiring. Basic Rules for Component Layout 1. Layout according to circuit modules. Related circuits with the … Read more
This article organizes some detailed issues that need attention in layout. Let’s check if you know them all! 01 Spacing of SMD Components The spacing between surface mount devices is a critical issue that engineers must pay attention to during layout. The spacing between components should not be too large (which wastes PCB space) or … Read more
In integrated circuit application design, after completing the project schematic design, PCB layout design is necessary. PCB design is a crucial step. The quality of the design results directly affects the overall functionality of the design. Therefore, a reasonable and efficient PCB layout is essential for the successful debugging of chip circuit design. In this … Read more
1.First, we will place the components that have structural requirements, paying attention to the placement position of pin 1 of the connector according to the imported structure. 2.During layout, attention should be paid to the height restrictions in the structure. 3.If you want the layout to be aesthetically pleasing, generally position components based on their … Read more