Filtering refers to the classification of various signals by frequency characteristics and the control of their direction. Commonly used are a variety of low-pass filter, high-pass filter, bandpass filter. The low-pass filter is used on the connected AC p
In the design of PCB boards for gigabit devices, a good signal integrity design requires the engineer to consider all aspects of the device, transmission line interconnection scheme, power distribution, and EMC.
After the wiring design is completed, it is necessary to carefully check whether the wiring design conforms to the rules formulated by the designer, and also confirm whether the rules formulated meet the requirements of the printed board production proces
Practice has proved that even if the circuit schematic design is correct and the printed circuit board is improperly designed, the reliability of electronic equipment will be adversely affected.
Run Proteus ISIS 7 to enter the PCB design interface, and select required components according to the component library. The P0.0-P0.7 ports of lpc2138 are used as the output end of 8-bit data, and P0.8, P0.9 and P0.10 are used as the output end of contro
In addition, pcb purchasers should pay attention to the point that when choosing pcb board manufacturers, they should not only choose from the perspective of price, but also compare the strength of pcb manufacturers, approximate product quotations, and se
When selecting the thickness of steel sheet, under the condition that the quality of solder joint is guaranteed, the lower thickness shall be selected according to the standard of IPC-7525A and the actual PCB components, and the larger one shall be avoide
In high-speed PCB design, the serpentine line has no so-called filtering or anti-interference ability, which can only reduce the signal quality, so it is only used for timing matching and has no other purpose.
In PCB circuit design, the coupling between differential routing is generally small, often accounting for only 10~20% of the coupling degree, more or the coupling to the ground, so the main return path of differential routing still exists in the ground pl
How much is the temperature resistance of pcb circuit board? How to test the heat resistance of pcb circuit board? These are the customers often consult questions, the following to give you a detailed answer.
A pass hole is a pad with an electroplating hole that connects copper wires on one PCB layer to another. High density multilayer circuit boards may use blind or buried holes, also known as micro through holes.
The RF part is grounded by multi-point grounding. The copper gap of RF link is usually 30mil to 40mil. Connect ground holes on both sides with the same spacing as possible. Make a grounding hole as close as possible to the grounding pad of the ground capa
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