PCB Manufacturer & PCB Assembly

Routing arrangements between printed circuit board components

Posted on September 14, 2018 by G

(1) Cross circuit is not allowed in the printed circuit. For the lines that may cross, it can be solved by “drilling” or “winding”. That is, let a certain lead be "drilled" from the gap under other resistors, capacitors, and triodes, or "wrap" from one end of a lead that may cross. How to make the circuit complicated in special cases, to simplify the design It is allowed to bridge the wires to solve the cross circuit problem.

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PCB circuit anti-interference measures

Posted on September 10, 2018 by G

In the design of electronic systems, in order to avoid detours and save time, the anti-interference requirements should be fully considered and avoided, and remedial measures against interference should be avoided after the design is completed. There are three basic elements that form interference:

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How to strengthen anti-interference ability in PCB design

Posted on September 10, 2018 by G

To get the best performance from an electronic circuit, the board is the support for the circuit components and devices in the electronics. Even if the schematic design of the circuit is correct and the printed circuit board is not properly designed, it will adversely affect the reliability of the electronic product. When designing a printed circuit board, it is important to use the correct method, follow the general principles of PCB design, and conform to the requirements of the anti-jamming design and the layout of the wires. In order to design a PCB of good quality and low cost, the following general principles should be followed:

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How to solve EMI to improve the performance of multi-layer PCB

Posted on August 27, 2018 by G

In the design of power circuit, electromagnetic interference is one of the key factors affecting product performance. At present, there are many ways to solve the problem of EMI for engineers. Generally, methods for suppressing EMI include: EMI suppression coating, EMI simulation. Design and selection of suitable EMI suppression parts. This article will start with the PCB, and introduce the role and design skills of PCB layered stacking in controlling EMI radiation.

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The core of PCB design - solving problems

Posted on August 27, 2018 by G

Conducting printed circuit board (PCB) design refers to the production of circuit boards at the lowest possible cost by designing schematic drawings and wiring layout. In the past, this usually required expensive tools, but now, with the availability of free high-performance software tools such as DesignSpark PCBs and design models, the speed of board designers has been greatly accelerated.

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Transmission Line Effect - High Speed PCB Design Guide

Posted on August 10, 2018 by G

Based on the transmission line model, in summary, the transmission line will have the following effects on the overall circuit design.

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High Speed PCB Design Guide

Posted on August 10, 2018 by G

High-speed circuit design is a very complex design process. There are several factors that need to be considered when designing a high speed circuit. These factors are sometimes opposite each other. Such as the high-speed device layout when the position is close, although the delay can be reduced, but crosstalk and significant thermal effects may occur. Therefore, in the design, we must weigh the various factors and make a comprehensive compromise; not only meet the design requirements, but also reduce the design complexity. The adoption of high-speed PCB design means the controllability of the design process. Only controllable is reliable.

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Summary of flexibility and reliability design of PCB

Posted on July 30, 2018 by G

Flexible printed circuit boards can be classified according to the type of bending encountered during assembly and use. There are two design types, which are discussed below:

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Inductance Analysis of Through Holes in Printed Circuit Boards

Posted on July 30, 2018 by G

For digital circuit designers, the inductance of the via is more important than the capacitance. Each via has a parasitic mid-inductance. Because the physical structure of the via is small, its characteristics are very lumped lumped circuit components. The main effect of the series inductance of the via is to reduce the effectiveness of the power supply bypass capacitor, which will make the overall power supply filtering effect worse.

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Power integrity design

Posted on October 24, 2025 by G

In circuit design, we are generally concerned about the quality of the signal, but sometimes we are often limited to the signal line for research, and the power and ground as the ideal situation to deal with, although this can simplify the problem, but in high-speed design This simplification is no longer feasible. Although the direct result of circuit design is manifested in signal integrity, we must not neglect the power integrity design. Because power integrity directly affects the signal integrity of the final PCB. Both power integrity and signal integrity are closely related, and in many cases, the main cause of signal distortion is the power system. For example, the ground bounce noise is too large, the design of the decoupling capacitor is not suitable, the loop effect is serious, the division of multiple power/ground planes is not good, the design of the ground layer is unreasonable, the current is not uniform, and the like.

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Impedance control for high speed circuit design

Posted on July 24, 2018 by G

The characteristic impedance of the control signal transmission path is kept constant, and the reflection coefficient is 0, which means that there is no reflection on the transmission path. This is called impedance matching. At this point the signal will be ideally delivered to the terminal.

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High Frequency PCB Routing Skills

Posted on July 19, 2018 by G

Digital devices are moving in the direction of high speed, low consumption, small size, and high anti-interference. This trend has put forward many new requirements for the design of printed circuit boards. The application of Protel software in China is quite common. However, many designers only pay attention to the Protel software's routing rate. The improvements made by Protel software to adapt to the changes of device characteristics are not used in the design, which not only makes software resources. The waste is more serious, and the excellent performance of many new devices is difficult to play. This paper intends to introduce Protel for Windows V1.5 software as an example to introduce the high-frequency circuit wiring when Protel software can Some special countermeasures are provided.

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Method for solving signal integrity problems in ASIC chip design

Posted on July 12, 2018 by G

For the design of ASIC (Application Specific Integrated Circuit), the performance of standard cells is wasted due to the application of standard cells, shorter development cycle, and more relaxed protection between cells. Therefore, the key to high-end ASIC chip design is to ensure high-performance chips are delivered with shorter development time.

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EMC design skills inside the product

Posted on July 10, 2018 by G

At present, electronic equipment is used in various electronic devices and systems, and printed circuit boards are still the main assembly method. Practice has proved that even if the schematic design of the circuit is correct and the printed circuit board is not properly designed, it will adversely affect the reliability of the electronic device. For example, if the two thin parallel lines of the printed board are in close proximity, a delay in the signal waveform is formed, and reflected noise is formed at the end of the transmission line. Therefore, when designing a printed circuit board, care should be taken to use the correct method.

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Internal EMC design skills - engineers must

Posted on June 11, 2018 by G

At present, electronic equipment is still used in printed circuit boards as the main assembly method for various electronic devices and systems. Practice has proved that even if the circuit schematic design is correct, improper design of the printed circuit board will also have an adverse effect on the reliability of electronic equipment. For example, if the two fine parallel lines of the printed board are in close proximity, a delay in the signal waveform is formed, and reflection noise is formed at the end of the transmission line. Therefore, when designing a printed circuit board, it should be noted that the correct method is used.

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The core of PCB design and solutions

Posted on June 08, 2018 by G

The design of a printed circuit board (PCB) refers to the layout of the circuit through the design principle drawing to produce the circuit board at the lowest possible cost. In the past, this usually required expensive specialized tools to complete, but now, with the increasing popularity of free high-performance software tools, such as DesignSparkPCB, and design models, circuit board designers have greatly accelerated the design speed.

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High Speed PCB Design Rules Summary and Analysis (2)

Posted on May 29, 2018 by G

25. Sensitive circuits or devices (such as reset circuits, WATCHDOG circuits, etc.) are at least 1000 mils away from the edge of the board, especially the interface edge of the board.

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PCB design layout experience summary

Posted on May 29, 2018 by G

PCB layout is the most important step in the design of electronic products. PCB layout and wiring will directly affect the performance of the circuit. Nowadays, although there are many softwares that can realize automatic PCB layout and routing, as signal frequencies continue to increase, engineers often need to understand the basic principles and techniques of PCB layout and routing to make their design perfect.

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About circuit division in Protel

Posted on May 16, 2018 by G

Protel99's electrical layer is divided into two types, open a PCB design document press, shortcut L, there is a layer settings window. The SIGNAL LAYER on the left is a positive layer, including TOP LAYER, BOTTOM LAYER, and MIDLAYER, and the middle one (INTERNAL PLANES) is a negative layer, ie INTERNAL LAYER. Both layers have completely different properties and methods of use.

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Tag: circuit division pcb inner layers electrical layer division

How to Solve Signal Integrity Problems in PCB Design and Layout

Posted on May 16, 2018 by G

To solve signal integrity problems, it is best to have multiple tools to analyze system performance. If there is an A/D converter in the signal path, then when evaluating the circuit performance, it is easy to find three basic problems: all three methods evaluate the conversion process, as well as the conversion process and PCB layout and other parts of the circuit. Interaction. Three areas of concern relate to the use of frequency domain analysis, time domain analysis, and DC analysis techniques. This article will explore how to use these tools to determine the root cause of issues related to PCB layout and layout. We will study how to decide what to look for; where to find it; how to test the problem through testing; and how to solve problems found.

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Routing arrangements between printed circuit board components

PCB circuit anti-interference measures

How to strengthen anti-interference ability in PCB design

How to solve EMI to improve the performance of multi-layer PCB

The core of PCB design - solving problems

Transmission Line Effect - High Speed PCB Design Guide

High Speed PCB Design Guide

Summary of flexibility and reliability design of PCB

Inductance Analysis of Through Holes in Printed Circuit Boards

Power integrity design

Impedance control for high speed circuit design

High Frequency PCB Routing Skills

Method for solving signal integrity problems in ASIC chip design

EMC design skills inside the product

Internal EMC design skills - engineers must

The core of PCB design and solutions

High Speed PCB Design Rules Summary and Analysis (2)

PCB design layout experience summary

About circuit division in Protel

How to Solve Signal Integrity Problems in PCB Design and Layout

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Recommended Article:

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Routing arrangements between printed circuit board components

PCB circuit anti-interference measures

How to strengthen anti-interference ability in PCB design

How to solve EMI to improve the performance of multi-layer PCB

The core of PCB design - solving problems

Transmission Line Effect - High Speed PCB Design Guide

High Speed ​​PCB Design Guide

Summary of flexibility and reliability design of PCB

Inductance Analysis of Through Holes in Printed Circuit Boards

Power integrity design

Impedance control for high speed circuit design

High Frequency PCB Routing Skills

Method for solving signal integrity problems in ASIC chip design

EMC design skills inside the product

Internal EMC design skills - engineers must

The core of PCB design and solutions

High Speed ​​PCB Design Rules Summary and Analysis (2)

PCB design layout experience summary

About circuit division in Protel

How to Solve Signal Integrity Problems in PCB Design and Layout

Categories

Recommended Article:

High Speed PCB Design Guide

High Speed PCB Design Rules Summary and Analysis (2)