Author: Grace

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Cleaning technology of circuit boards in PCB copy boards
ByGrace February 7, 2025February 7, 2025
Cleaning technology of circuit boards in PCB copy boards At present, there are four main new generation cleaning technologies for circuit boards: 1.Semi-aqueous cleaning technology Semi-aqueous cleaning mainly uses organic solvents and deionized water, plus a certain amount of surfactants and additives to form a cleaning agent. This type of cleaning is between solvent cleaning…
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Manufacturing method of PCB copper-clad laminate
ByGrace February 7, 2025February 7, 2025
PCB copper-clad laminate is the substrate material for making printed circuit boards. In addition to supporting various components, it can also achieve electrical connection or electrical insulation between them.The manufacturing process of PCB copper-clad laminate is to impregnate glass fiber cloth, glass fiber felt, paper and other reinforcing materials with adhesives such as epoxy resin…
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A PCB anti-interference design technology for high-speed DSP
ByGrace February 7, 2025February 7, 2025
In recent years, with the rapid development of new processes and new devices, high-speed devices have become more and more popular, and high-speed circuit design has become a commonly needed technology. TI’s DSPs chip TMS320C62xx, C64xx, and C67xx series devices are one of the rapidly developing high-speed devices. The internal structure of C6000 is fixed-point,…
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Special countermeasures for high-frequency circuits in PCB design
ByGrace February 7, 2025February 7, 2025
With the rapid development of the modern electronic industry, digital and high-frequency circuits are developing in the direction of high speed, low consumption, small size and high anti-interference, which puts higher requirements on PCB (printed circuit board, printed circuit board) design. The Protel 99SE design system fully utilizes the advantages of Windows XP and Windows…
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Practical problems in the production of fine lines on circuit boards
ByGrace February 7, 2025February 7, 2025
With the development of the electronics industry, the integration of electronic components is getting higher and higher, while the size is getting smaller and smaller, and BGA type packaging is widely used. Therefore, the lines of PCBs will become smaller and smaller, and the number of layers will increase. Reducing the line width and line…
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RF circuit PCB design
ByGrace February 7, 2025February 7, 2025
With the development of communication technology, handheld wireless RF circuit technology is increasingly used, such as wireless pagers, mobile phones, wireless PDAs, etc. The performance indicators of the RF circuits directly affect the quality of the entire product. One of the biggest features of these handheld products is miniaturization, and miniaturization means that the density…
Read More RF circuit PCB design
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Good Grounding Guidelines for PCB Design
ByGrace February 7, 2025February 7, 2025
Grounding is undoubtedly one of the most difficult issues in system design. Although it is relatively simple in concept, it is complex to implement. Unfortunately, there is no concise, step-by-step method to ensure good results, but if some details are not handled correctly, they can cause headaches. “ground” is the reference point for signals. For…
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Signal return and cross-segmentation in high-speed PCB
ByGrace February 6, 2025February 5, 2025
Here is a simple “scenario” to introduce ground return and power return and some cross-segmentation issues in combination with the following figure. For the convenience of drawing, the layer spacing is enlarged. IC1 is the signal output end, IC2 is the signal input end (to simplify the PCB model, it is assumed that the receiving…
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Physical recycling and comprehensive utilization technology of waste PCB
ByGrace February 6, 2025February 5, 2025
Circuit board design steps Generally speaking, the most basic process of designing a circuit board can be divided into three steps. (1)Design of circuit schematic: The design of circuit schematic mainly uses the schematic design system (Advanced Schematic) of PROTEL099 to draw a circuit schematic. In this process, we should make full use of the…
Read More Physical recycling and comprehensive utilization technology of waste PCB
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PCB Routing Guide
ByGrace February 6, 2025February 6, 2025
In PCB design, routing is an important step to complete product design. It can be said that the previous preparations are all done for it. In the entire PCB, the design process of routing is the most demanding, the most skillful, and the most labor-intensive. PCB routing includes single-sided routing, double-sided routing, and multi-layer routing….
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Noise reduction technology for DSP systems
ByGrace February 6, 2025February 6, 2025
With the emergence of high-speed DSPs (digital signal processors) and peripherals, new product designers are facing an increasingly serious threat of electromagnetic interference (EMI). In the early days, emission and interference issues were referred to as EMI or RFI (radio frequency interference). Now it is replaced by the more specific term “interference compatibility”. Electromagnetic compatibility…
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Master the characteristics of IC packaging to achieve optimal EMI suppression performance
ByGrace February 6, 2025February 6, 2025
Placing decoupling capacitors directly inside the IC package can effectively control EMI and improve signal integrity. This article starts with the internal packaging of the IC, analyzes the source of EMI, the role of IC packaging in EMI control, and then proposes 11 design rules for effective EMI control, including package selection, pin structure considerations,…
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Detailed explanation of PCB safety distance
ByGrace February 6, 2025February 6, 2025
Safety distance includes electrical clearance (space distance), creepage distance (surface distance) and insulation penetration distance. Electrical clearance: the shortest distance between two adjacent conductors or one conductor and the adjacent motor housing surface measured along the air. Creep distance: the shortest distance between two adjacent conductors or one conductor and the adjacent motor housing surface…
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Components of a Classic PCB Temperature Profiling System
ByGrace February 6, 2025February 6, 2025
A classic PCB temperature profiling system consists of the following components: · Data collection profiler, which passes through the middle of the furnace and collects temperature information from the PCB. · Thermocouples, which are attached to key components on the PCB and then connected to the accompanying profiler. · Thermal insulation, which protects the profiler…
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Suppressing the source of electromagnetic interference in electronic equipment
ByGrace February 6, 2025February 6, 2025
Electromagnetic interference is widely present in various types of electronic and electrical equipment. Various electronic and electrical equipment will more or less emit electromagnetic waves when working, which will interfere with the normal operation of the entire equipment. In the design of electronic products, due to insufficient consideration of electromagnetic compatibility, some electrical and electronic…
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Author: Grace

Cleaning technology of circuit boards in PCB copy boards

Manufacturing method of PCB copper-clad laminate

A PCB anti-interference design technology for high-speed DSP

Special countermeasures for high-frequency circuits in PCB design

Practical problems in the production of fine lines on circuit boards

RF circuit PCB design

Good Grounding Guidelines for PCB Design

Signal return and cross-segmentation in high-speed PCB

Physical recycling and comprehensive utilization technology of waste PCB

PCB Routing Guide

Noise reduction technology for DSP systems

Master the characteristics of IC packaging to achieve optimal EMI suppression performance

Detailed explanation of PCB safety distance

Components of a Classic PCB Temperature Profiling System

Suppressing the source of electromagnetic interference in electronic equipment

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