Five key points of PCB circuit board design!
Now PCB design time is shorter and shorter, smaller and smaller board space, higher and higher device density, extremely demanding layout rules and large size components make designers
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Methods to prevent the warping of PCB printed boards
The board on which the components are installed is bent after welding, and it is difficult to cut the feet of the components neatly. The board can not be installed into the chassis or machine socket, so the assembly plant encountered the board is also ver
How to measure the dielectric constant of PCB circuit board material at millimeter wave frequency?
While raw material test methods often introduce uncertainties related to test fixtures or test devices, circuit test methods include uncertainties from test circuit design and fabrication techniques. Because the two methods are different, measurement resu
PCB circuit board design and wiring principles
How to improve SMT SMT processing efficiency: first, advance work preparation, second, ensure the SMT SMT machine running time balance, third, equipment operating parameters
In 2020, the output value of the global printed circuit board will reach $66.1 billion
Local collision occurs in PCB process, and the copper wire is separated from the substrate by external mechanical force. This defect manifests as poor positioning or orientation, falling copper wire will have obvious distortion, or in the same direction o
In multilayer circuit boards
the production of controllable impedance boards is becoming more and more important.
PCB board debugging technology of six types of modules
The trial-production process of six types of modules generally carried out by domestic counterparts is mainly after determining the main circuit, designing the compensation circuit, carrying out a large number of scheme design and sample production.
PCB mixed signal circuit board design criteria
Avoid running digital clock lines and high frequency analog signal lines near the power layer; otherwise, the noise from the power signal will be coupled to the sensitive analog signal.
Lift the "cap" of PCB board electromagnetic compatibility
From the point of view of function, the hole can be divided into two categories: one is used as an electrical connection between the layers; The second is used for fixing or positioning devices. In terms of technological process, through holes are general
Wiring arrangement and reasonable layout of components on PCB board
Vertical refers to the component body perpendicular to the circuit board installation, welding, its advantage is to save space, horizontal refers to the component body parallel and close to the circuit board installation, welding, its advantage is that th
How to improve the thermal reliability of PCB boards
They not only play a conductive role in the design, but also play the role of heat conduction, its thermal conductivity and heat transfer area are relatively large circuit board is an indispensable part of the electronic circuit, its structure is composed
PCB board impedance board definition
General simulation software cannot take into account some impedance discontinuity wiring conditions due to the line model or the mathematical algorithm used. In this case, only some Temninators, such as series resistors, can be reserved on the schematic d
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