一 Circuit board principle--brief introduction
printed circuit board，Also known as pcb board, Aluminum substrate, High-frequency plate, Printed circuit board (copper etching technology). It is an important electronic component, support for electronic components, and the provider for electronic component circuit connection. The traditional printed circuit board, using photo resist etching method, make circuit lines and surface, so it is called a printed circuit board or printed circuit board. Because of the continuous refinement with electronic products , most of the circuit board is attached by etching resist (lamination or coating) at present , after exposure post development, and then etching circuit board.
二 Circuit board principle--structure
The circuit board is mainly composed of a pad, hole, mounting holes, wires, connectors, electrical components, filling, boundary etc. Common board structures include single layer, double layer and multilayer. The main functions of each component are as follows:
Pad—Metal hole for welding component pin
Through hole—including metal via non metal vias, wherein the metal hole for connection between each layer components pin。
Mounting hole—Fixed circuit board
Wireway—Electrical network copper film connecting component pins
Connector—Component for connection between circuit boards
Electrical boundary—Used to determine the size of the circuit board，All components on the circuit board should not exceed the boundary。
Through hole—including metal via non metal vias, wherein the metal hole for connection between each layer components pin。
Mounting hole—Fixed circuit board
Wireway—Electrical network copper film connecting component pins
Connector—Component for connection between circuit boards
Electrical boundary—Used to determine the size of the circuit board，All components on the circuit board should not exceed the boundary。
三 Circuit board principle
Working principle of circuit board：utilizing the base plate insulating material separated from the surface of the conductive layer of copper foil, to make the electric current along the preset route flow in various components such as power, amplification, attenuation, modulation, demodulation, encoding function etc.
Expand knowledge:
The basic design process of circuit board:
* Circuit schematic design
* Generate network report
* Printed circuit board design
* Generate The printed circuit board table
* Generate network report
* Printed circuit board design
* Generate The printed circuit board table
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