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Working principle of circuit board:
It uses the plate-based insulating material to separate the surface copper foil conductive layer, so that the current flows in various components along the pre-designed route, and completes the functions such as work, amplification, attenuation, modulation, demodulation, coding and so on.
Circuit board principle: structure
Circuit boardIt is mainly composed of pad, via, mounting hole, wire, components, connectors, filling, electrical boundary, etc. Common board layer structures include single layer PCB, double layer PCB and multi layer PCB. The main functions of each component are as follows:
Pad: metal hole for welding component pins.
Via: there are metal via and non-metal via, in which the metal via is used to connect the component pins between each layer.
Mounting hole: used to fix the circuit board.
Wire: copper film of electrical network used to connect the pins of components.
Connector: components used for connection between circuit boards.
Filling: copper coating for ground wire network can effectively reduce the impedance.
Electrical boundary: used to determine the size of the circuit board. All components on the circuit board shall not exceed the boundary.
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