PCB Manufacturer & PCB Assembly

PCB circuit board heat treatment

Posted on January 15, 2019 by G

The direct cause of the temperature rise of the printed board is due to the existence of circuit power consumption devices. The electronic devices have different degrees of power consumption, and the heat generation intensity varies with the power consumption.

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Analysis of temperature rise factors of printed circuit boards

Posted on January 15, 2019 by G

The heat generated during the operation of the electronic device causes the internal temperature of the device to rise rapidly. If the heat is not dissipated in time, the device will continue to heat up, and the device will fail due to overheating, and the reliability of the electronic device will decrease. Therefore, it is very important to dissipate the board.

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Tag: pcb printed boards

Printed circuit board ground wire design

Posted on January 11, 2019 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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Impedance factors in PCB processing

Posted on January 11, 2019 by G

Under normal PCB design conditions, the following factors are mainly affected by PCB manufacturing:

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PowerPCB shortcuts

Posted on January 11, 2019 by G

PowerPCB provides users with a quick set of commands. Shortcut commands are mainly used for operations that require frequent changes to the settings during the design process. For example, changing the line width, wiring layer, and changing the design Grid can be achieved by shortcut commands.

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Detailed manual layout and routing using flying leads in PCB design

Posted on January 11, 2019 by G

Whether the wiring of a printed board can be completed smoothly depends mainly on the layout, and the higher the density of the wiring, the more important the layout. Almost every designer has encountered such a situation. When there are only a few wires left, they find that they can't be laid out anyway. They have to delete a lot or all of the wiring and re-adjust the layout! A reasonable layout is guaranteed. The premise of wiring.

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Comparison of SPICE, IBIS and Verilog-AMS, VHDL-AMS models

Posted on January 08, 2019 by G

The core part of the PCB design method based on signal integrity computer analysis is the establishment of the PCB board level signal integrity model, which is the difference from the traditional design method. The correctness of the SI model will determine the correctness of the design, and the establishability of the SI model determines the feasibility of this design method.

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Signal integrity analysis model

Posted on January 08, 2019 by G

In order to perform circuit simulation, it is necessary to first build a model of the component, that is, for the various components supported by the circuit simulation program, there must be a corresponding mathematical model to describe them in the simulation program, that is, a calculation formula that can be calculated by a computer. To express them. An ideal component model should reflect both the electrical characteristics of the component and the numerical solution on the computer. In general, the higher the accuracy of the device model, the more complex the model itself, and the more the number of model parameters required. In this way, the amount of memory occupied increases and the calculation time increases. While integrated circuits often contain a large number of components, a slight increase in the complexity of the device model can double the computation time. Conversely, if the model is too rough, the analysis results will be unreliable. Therefore, the complexity of the component model used depends on actual needs.

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Characteristic impedance control of PCB

Posted on January 08, 2019 by G

The range of variations in characteristic impedance control must consider four factors:

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Characteristic impedance of printed circuit boards

Posted on January 08, 2019 by G

The characteristic impedance of the multi-layer signal transmission line, Z0, currently requires a control range of typically 50 Ω ± 10%, 75 Ω ± 10%, or 28 Ω ± 10%.

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Signal Integrity: Reflections from changes in PCB trace width

Posted on December 29, 2018 by G

When PCB layout is performed, it often happens that when a trace passes through an area, due to the limited wiring space of the area, thinner lines have to be used, and after passing through this area, the line is restored to its original width. A change in the width of the trace causes a change in impedance, so reflection occurs and affects the signal. So under what circumstances can this effect be ignored, and under what circumstances must we consider its impact?

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How to effectively design the surface of a printed circuit board

Posted on December 29, 2018 by G

The components should be arranged in a straight line in the order of the electrical schematics, and the compactness is required to shorten the length of the printed conductors and achieve a uniform assembly density. Under the premise of ensuring electrical performance requirements, the components shall be parallel or perpendicular to the board surface and parallel or perpendicular to the main board edge. It is evenly distributed on the board surface.

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Printed circuit board structure design

Posted on December 29, 2018 by G

Four designs and steps and methods

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EMC design of hybrid integrated circuits

Posted on December 27, 2018 by G

Starting from the improvement of system electromagnetic compatibility, combined with the characteristics of hybrid integrated circuit technology, the problems that should be paid attention to and the specific measures taken in the design of hybrid integrated circuits are proposed.

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Electromagnetic compatibility design - circuit layout

Posted on December 27, 2018 by G

In the circuit design, often only pay attention to improve the wiring density, or pursue uniform layout, ignoring the influence of the line layout on preventing interference, causing a large number of signals to radiate into the space to form interference, which may lead to more electromagnetic compatibility problems. Therefore, good wiring is the key to success in design.

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About PCB Place inspection and processing

Posted on December 25, 2018 by G

In design, layout is an important part. The quality of the layout results will directly affect the effect of the wiring, so it can be considered that a reasonable layout is the first step in the success of PCB design.

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Tag: pcb layout pcb place pcb processing

About PCB Route inspection and processing

Posted on December 25, 2018 by G

There are two ways to route: automatic routing and interactive wiring.

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Tag: pcb processing pcb route circuits

Signal integrity issues in high speed PCB design

Posted on December 25, 2018 by G

As device operating frequencies become higher and higher, the signal integrity issues faced by high-speed PCB design become a bottleneck in traditional design, and engineers face increasing challenges in designing complete solutions. Although the high-speed simulation tools and interconnect tools can help designers solve some of the problems, high-speed PCB design requires more experience and deep communication between the industry.

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Advantages and strategies for differential signal line routing

Posted on December 21, 2018 by G

The differential signal pairs with very close wirings are also closely coupled to each other. This mutual coupling reduces EMI emissions. The main disadvantage of differential signal lines is the increased PCB area. This paper introduces the circuit board design process. Wiring strategy for differential signal line routing.

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Tag: signal lines advantages signals circuit

Power signal integrity considerations in PCB design

Posted on December 21, 2018 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.

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PCB circuit board heat treatment

Analysis of temperature rise factors of printed circuit boards

Printed circuit board ground wire design

Impedance factors in PCB processing

PowerPCB shortcuts

Detailed manual layout and routing using flying leads in PCB design

Comparison of SPICE, IBIS and Verilog-AMS, VHDL-AMS models

Signal integrity analysis model

Characteristic impedance control of PCB

Characteristic impedance of printed circuit boards

Signal Integrity: Reflections from changes in PCB trace width

How to effectively design the surface of a printed circuit board

Printed circuit board structure design

EMC design of hybrid integrated circuits

Electromagnetic compatibility design - circuit layout

About PCB Place inspection and processing

About PCB Route inspection and processing

Signal integrity issues in high speed PCB design

Advantages and strategies for differential signal line routing

Power signal integrity considerations in PCB design

Categories

Recommended Article:

BLOG

PCB circuit board heat treatment

Analysis of temperature rise factors of printed circuit boards

Printed circuit board ground wire design

Impedance factors in PCB processing

PowerPCB shortcuts

Detailed manual layout and routing using flying leads in PCB design

Comparison of SPICE, IBIS and Verilog-AMS, VHDL-AMS models

Signal integrity analysis model

Characteristic impedance control of PCB

Characteristic impedance of printed circuit boards

Signal Integrity: Reflections from changes in PCB trace width

How to effectively design the surface of a printed circuit board

Printed circuit board structure design

EMC design of hybrid integrated circuits

Electromagnetic compatibility design - circuit layout

About PCB Place inspection and processing

About PCB Route inspection and processing

Signal integrity issues in high speed PCB design

Advantages and strategies for differential signal line routing

Power signal integrity considerations in PCB design

Categories

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