To make the electronic circuit get good performance, the layout of the components and the layout of the wires are very important. In order to design a PCB board with good quality and low cost, what principles need to be followed when determining the position of the components for PCB circuit board?
PCB circuit boards need to comply with the following principles when determining the location of components:
1. Shorten the wiring between high-frequency components as much as possible, and try to reduce their distribution parameters and mutual electromagnetic interference. Electrical board components that are susceptible to interference should not be too close to each other, and input and output components should be kept as far away as possible.
2. There may be a high potential difference between some components or wires, and the distance between them should be increased to avoid accidental short circuits of the soldering circuit boards caused by the discharge. The components with high voltage should be arranged as far as possible in places that are not easily reachable by hand during debugging.
3. Components weighing more than 15g should be fixed with brackets and then welded. Those components that are large, heavy, and generate a lot of heat should not be installed on the PCBA circuit board but should be installed on the chassis bottom plate of the whole machine, and the heat dissipation problem should be considered. Thermal components should be far away from heating components.
4. For the layout of adjustable components such as potentiometers, adjustable inductance coils, variable capacitors, micro switches, etc., the structural requirements of the whole machine should be considered. If it is adjusted in the PCB circuit board machine, it should be placed on the printed circuit board where it is convenient for adjustment; if it is adjusted outside the machine, its position should be adapted to the position of the adjustment knob on the chassis panel.
Almost every kind of electronic equipment, from electronic watches, and calculators, to computers, communication electronic equipment, and military weapon systems, as long as there are electronic components such as integrated circuits, in order to make the electrical interconnection between the various components, they must use PCB board lined plate.
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