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With the rapid development of the industrial field, more and more auxiliary industrial products appear in large numbers, which greatly facilitates our production and life. As a very important auxiliary product for industrial production, multi-layer PCB circuit boards are playing an increasingly important role in today's society. So, why are multilayer PCB boards becoming more and more popular?
1. Simple structure
In order to meet the isolation between channels, the multilayer PCB circuit board structure adopts a frame-type metal material isolation cavity. The whole module is divided into multiple independent small cavities, and the circuit unit in each small cavity forms a relatively independent part. At the position of the microstrip line where the circuit unit is connected, the isolation strip is hollowed out to prevent short circuits. Other parts are in large-area contact with the top substrate to achieve isolation between channels and good grounding. When assembling, the printed board is embedded into the cavity from the bottom of the cavity and fastened with screws to form a structure similar to a sandwich biscuit.
2. Automatic adjustment
The core of PCB component layout is to arrange signal link microwave components reasonably. By adjusting the direction and position of components, the signal transmission path length is small and the input is far away from the output. At the same time, high-power circuits and low-power circuits are far away from each other, and sensitive analog signals, high-speed digital signals, and microwave radio frequency signals are far away from each other. In the design, the decoupling capacitors are directly connected to the chip pins through leads. The decoupling capacitor is as close as possible to the power supply pin of the chip, and the self-resonant frequency of the selected decoupling capacitor contains the noise frequency, so that the filtering effect of the power entering the chip is better.
3. Safe and reliable
More current-type drive chips are used in the circuit board. When multiple devices are switched at the same time when the circuit is running, a larger transient current will pass through the power plane of the chip and the circuit board. Current surges will cause ground plane voltage fluctuations, thereby avoiding interference with other static drives and microwave chips of the same power supply, so it is safer and more reliable.
At present, the high-efficiency multi-layer PCB circuit board provides great convenience for industrial production, and many large industrial production enterprises have begun to introduce this product. Good circuit boards provide important assistance for production and life. I believe that in the future, this product will gradually be used in the field of life and become another great helper in our daily lives.
