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PCB Prototype Image:The design principle of single chip control board in PCB design

The design principle of single chip control board in PCB design

1.Layout of electronic components When laying out electronic components, relevant components should be put close to each other, such as, clock generator, crystal oscillator, input end of CPU clock, which easily generate noise, so they should be placed closer to each other. For components which easily produce noise, small current circuits, large current circuits, switching circuit, etc., they should be away from the logic control circuit with single chip as well as ROM and RAM. If possible, these circuits can be made into circuit boards, which will be beneficial to resisting interference and im...

October 16, 2019

PCB Prototype Image:Reservation and validity period of PCB

Reservation and validity period of PCB

After passing the finished goods inspection, PCB will be packed with vacuum package to be shipped. Why does PCB need vacuum packaging? How to reserve PCB after vacuum package? How long is the validity period? PCB factories will make a brief introduction of the reservation method and validity period of PCB. Why does PCB needs vacuum packaging? This is a small question but deserves significant consideration from PCB manufacturers. Once the PCB is not enclosed well, the immersion gold on the surface, spraying tin and welding parts will be oxidized and affect welding, which will be harmful to pro...

October 8, 2019

PCB Prototype Image:Differences between the positive layer and negative layer on the PCB

Differences between the positive layer and negative layer on the PCB

Negative layer on the PCB: Generally, we mean tenting processing, in which acid chemical liquid is used for etching negative side, because the circuit or copper side should be transparent after the base film is produced. The part which is removed is black. After the circuit production process is exposed, the transparent part will be hardened as dry film photoresist has chemical action under illumination. Next, dry films without hardening will be removed in the developing process. Then it comes to the lead tin plating process, in which tin and lead are plated on the copper side whose dry film i...

September 24, 2019

PCB Prototype Image:How to reduce mistakes in PCB design and improve efficiency?

How to reduce mistakes in PCB design and improve efficiency?

Circuit board design is a key and time-consuming task. Whenever problems arise, engineers need to inspect the components one by one via network. That is to say, the attention and circumspection it requires is no less than the chip design. A typical circuit board design is usually composed of the following steps:The time it takes in the first three steps is the longest because schematic diagram inspection is a long manual process. Imagine a SoC circuit board which is connected with 1000 or 1000 more lines. Manual inspection of every single line is a long and boring task. Actually, it is almost ...

September 17, 2019

PCB Prototype Image:How to make clear of PCB wiring ?

How to make clear of PCB wiring ?

In the process roads construction, there are usually one road for coming and another for going, which is the same case with PCB wiring in which there are usually two circuits. For low-frequency circuit, it is a loop while it is a transmitting line for high-frequency electromagnetic field, in which differentiating signal lines, such as, USB, network lines, are the commonest one. In terms of anti-resistance features, this article will make no further explanation. For more information, please refer to the article “How to read the theory of electromagnetic field? ”.Differentiating signal line is a...

September 11, 2019

PCB Prototype Image:How to handle PCB components layout in designing LED switching power supply?

How to handle PCB components layout in designing LED switching power supply?

As a new member of switching power supply family, currently, LED switching power supply has been applied widely in many fields. In the R&D of new products, layout of PCB components is the most important part in designing LED switching power and a key test for engineers in designing the schemes as well. Then, what should we do achieve the best effects in the layout of PCB components? To achieve the best OCB components layout for the LED switching power supply, the first point which deserves full attention is the size of PCB before designing the layout of PCB components. When the size of PCB...

November 24, 2018

PCB Prototype Image:How to design an excellent PCB product?

How to design an excellent PCB product?

Before routing, you should make an analysis of the design and carefully set the tools and software, which will make the design meet standards more. 1. To determine the number of PCB layers The size and number of routing layers of PCB should be determined in the preliminary stage of designing. The number of routing layers and ways of stack-up will directly influence routing and resistance of the printed wiring. Determining the size of the board will be beneficial to confirming the ways of stacking up so as to achieve the desired designing effect. At the current stage, the cost differences betwe...

October 29, 2018

PCB Prototype Image:How to analyze where the problems lie when the PCB loses its efficiency?

How to analyze where the problems lie when the PCB loses its efficiency?

To figure out the accurate reasons or mechanisms why PCB loses the efficiency or is defective, we must follow the basic principle and analysis procedure, or important information may be omitted, which makes it impossible to continue to conclude the reasons for the mistakes or even the possibility. Generally, the basic procedures must be firstly based on efficiency failure to figure out the mode and place of efficiency failure, namely, failure location or malfunction location by collecting information, testing functions, electric performance test or some simple appearance inspection. For some s...

August 6, 2018

PCB Prototype Image:How to improve the rate of defect of automotive PCB?

How to improve the rate of defect of automotive PCB?

Today, in the key applications of PCB, PCB for vehicles plays a very important role. PCB copying has very high demands for the reliability and environmental adaptability because automotive requires special working environment, high degree of security and high current. Besides, it involves many types of technology. Therefore, it is a challenge for PCB enterprises. If manufacturers intend to expand the market of automotive PCB, they should have more understanding and thorough analysis of this new market. Automotive PCB lays heavy stress on reliability and low DPPM. Have our enterprises had enoug...

July 11, 2018

PCB Prototype Image:In PCB design, the roles PCB layer stacking plays in controlling EMI radiation and its design tactic

In PCB design, the roles PCB layer stacking plays in controlling EMI radiation and its design tactic

To appropriately place capacitance with suitable electric capacity near the IC’s power tin can make the output voltage jump faster, the trouble from which is however more than that. The electric capacity has the characteristic of limited frequency response, which makes it impossible for capacitance to produce the harmonic power needed to drive IC output in the full spectrum band. In addition, transient voltage it creates in the process of power confluence will form a voltage drop at the both edges in the path of decoupling, which is the main interference source of the common model EMI. What sh...

June 21, 2018

PCB Prototype Image:The application of ultraviolet laser processing in the PCB industry

The application of ultraviolet laser processing in the PCB industry

Laser cutting or drilling used in the PCB industry only requires several or a dozen of watts of laser instead of tens of thousands of watts of laser power. The application of flexible circuit board is becoming increasingly important in consumer products, automotive industry or robot manufacturing technology. As UV laser processing system has the advantages of flexible processing, high-precision processing effect and flexible & controllable processing procedure, it has become the first choice for soft circuit board and thin PCB Manufacturer laser drilling & cutting. To today, the long ...

May 4, 2018

PCB Prototype Image:The important features of an excellent design of PCB

The important features of an excellent design of PCB

Whether it is in the process of manufacturing or assembly, or in the practical application, it is crucial that Custom PCB must have reliable performance. In addition to added cost, defects in the assembling process can be carried to the terminal products along with PCB, which may lead to malfunction in the practical applications and cause claim for compensation when being sold. Therefore, it is no exaggerating to say that the cost of a piece of high quality PCB can be ignored from this respect. In market segments, especially in the market of manufacturing products applied in key areas, the ef...

March 15, 2018

PCB Prototype Image:How can PCB engineers design excellent PCB samples

How can PCB engineers design excellent PCB samples

Early-stage preparation - PCB structure design - PCB layout - wire distributing - wire distribution optimizing and silk screen - network and DRC inspection and structure inspection - prototype production. I: Early-stage preparation includes preparing component library and schematic diagramPCB component library has high requirements, which can directly influence the installation of boards, while the requirements for SCH component library is low as long as the features of base pin and PCB components are coordinated well. PS: The hidden base pins in the standard library should be paid more attent...

February 14, 2018

PCB Prototype Image:The factors deciding whether the design of PCB can be successful

The factors deciding whether the design of PCB can be successful

Modern Prototype PCB are required to maintain thousands of networks, which may bring much trouble to the wire distribution of key areas in the design. The best way to solve this problem is to divide the network wires into groups so as to create more effective wire distribution. After appropriate grouping and wire distributing, marks can be made and important groups can be screened to exhibit the key network in the distribution. 1. Over current protection: Once the current is too high, the power will be automatically off in case that the current and parts will be damaged for exceeding the rat...

February 4, 2018

PCB Prototype Image:Innovation and development in PCB branch board

Innovation and development in PCB branch board

The global electronic manufacturing industry has entered an era of innovation intensiveness and rapid development of newly-emerging businesses. As the base and core of electronic components, the PCB industry is speeding up its pace of upgrading and transformation. With the volume of electronic products shrinking, the density of the circuit board’s chip is driven to improve and product quality is required to increase gradually. PCB branch board can solve the problem of electric appliance circuit and broken of parts as manual work may cause uneven force or differences in the position or angles o...

January 27, 2018