Talk about the basic principles of PCB layering design
The power circuit and control signal circuit components need to be connected to different ground layers, which are generally connected through a single point.
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Five methods to improve the quality of PCB circuit boards for vehicles are recommended
Attention should be paid to the wiring of signal lines under magnetic beads, between pads and those that may come into contact with magnetic beads. Some magnetic beads conduct electricity quite well and may produce unexpected conductive paths.
Methods of PCB design for antistatic release (ESD)
Adjacent to these connection points, a pad or mounting hole for mounting is placed between the case ground and the circuit ground. These ground connections can be cut open with a blade to keep the circuit open, or a jump with a magnetic bead/high frequenc
The basic principle of DC power supply design in high speed PCB design
Power part and control part separate layout, power circuit is generally large voltage, large current, high power circuit, relatively large interference. And the control circuit is low voltage, if the control part to the power part, the control part is ver
What is the theory of PCB design microwave dual transmission line?
For RF-PCB wiring, each adjacent signal line (including adjacent planes) is formed to follow the basic principle of double line features (this will be explained later).
Design concept and principle of microwave high frequency circuit PCB
a simple and applicable method is to first lay the ground wire, then place key signals such as high speed clock signals or sensitive circuits near their ground loops, and finally route other circuits. The layout of the signal line is best arranged accordi
Good testability of mechanical contact conditions
In addition, unused gate circuits are often used for design improvements later, and they may be converted into circuits.
the application of methods such as In-Circuit-Test is limited
It costs some money to test a friendly PCB design, however, it costs more to test a difficult PCB design. Testing itself has a cost, and the cost of testing increases with the increase of the number of tests; From online testing to functional testing and
Price and cost standard of circuit board
Many companies have started to set up a circuit board pricing program on their Web sites, with rules that allow customers to freely calculate prices. People who do not understand PCB can also easily calculate the price of PCB.
Slice analysis
At this point, scanning acoustic microscope shows its special advantage in nondestructive detection of multilayer high density PCB. And the general obvious explosion plate is only through the visual appearance can be detected.
PCB has become an important and key part of electronic information products
For some parts that cannot be inspected by appearance, as well as the through hole inside the PCB and other internal defects, X-ray fluoroscopy system has to be used for inspection.
8-layer mechanical blind hole plate (4+4 mechanical blind hole structure)
Opening, drying board, mechanical drilling blind buried hole, copper sinking, full plate plating, inner graphics, plating holes, inner graphics, inner etching, inner AOI, brown, laminating, drying board, milling, removing glue, drilling, normal process
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