810-001489-015 控制电路板

Description

810-001489-015 控制电路板

电磁兼容性是指电子设备在各种电磁环境中仍能够协调、有效地进行工作的能力。目的是使电子设备既能抑制各种外来的干扰，使电子设备在特定的电磁环境中能够正常工作，同时又能减少电子设备本身对其它电子设备的电磁干扰。

1、选择合理的导线宽度由于瞬变电流在PCB电路板印制线条上所产生的冲击干扰主要是由印制导线的电感成分造成的，因此应尽量减小印制导线的电感量。

2、采用正确的布线策略采用平等走线可以减少导线电感，但导线之间的互感和分布电容增加，如果布局允许,最好采用井字形网状布线结构，具体做法是印制板的一面横向布线，另-面纵向布线, 然后在交叉孔处用金属化孔相连。

3、为了抑制PCB电路板导线之间的串扰，在设计布线时应尽量避免长距离的平等走线，尽可能拉开线与线之间的距离，信号线与地线及电源线尽可能不交叉。在-些对干扰+分敏感的信号线之间设置-根接地的印制线， 可以有效地抑制串扰。

电路板主要由焊盘、过孔、安装孔、导线、元器件、接插件、填充、电气边界等组成，各组成部分的主要功能如下:
焊盘:用于焊接元器件引脚的金属孔。
过孔:有金属过孔和非金属过孔，中金属过孔用于连接各层之间元器件引脚。
安装孔:用于固定电路板。
导线:于连接元器件弓|脚的电气网络铜膜。
接插件:用于电路板之间连接的元器件。
填充:用于地线网络的敷铜，可以有效的减小阻抗。
电气边界:用于确定电路板的尺寸,所有电路板上的元器件都不能超过该边界。

810-001489-015 控制电路板

Electromagnetic compatibility refers to the ability of electronic devices to work harmoniously and effectively in various electromagnetic environments. The purpose is to enable the electronic device to both suppress various external interference, so that the electronic device in a specific
It can work normally in the electromagnetic environment, and at the same time, it can reduce the electromagnetic interference of the electronic equipment itself on other electronic equipment.

1, choose a reasonable wire width because the impact of the transient current on the PCB circuit board printed line is mainly caused by the inductive component of the printed wire, so the printed wire should be minimized
The inductance.

2, using the correct wiring strategy using equal wiring can reduce the inductance of the wire, but the mutual inductance and distributed capacitance between the wires increase, if the layout allows, it is best to use the well pattern network wiring structure, specific
One side of the printed board is wired horizontally, the other side is wired longitudinally, and then connected with metallized holes at the cross holes.

3, in order to suppress the crosstalk between PCB circuit board wires, in the design of wiring should try to avoid long-distance equal wiring, as far as possible to open the distance between the line and the line, signal line and ground and power line
Can not cross. The printed line is set up between the signal lines that are sensitive to interference and can effectively suppress crosstalk.

The circuit board is mainly composed of welding pad, through hole, mounting hole, wire, components, connectors, filling, electrical boundary, etc. The main functions of each component are as follows:
Pad: A metal hole for welding the pin of a component.
Through holes: there are metal through holes and non-metal through holes, and the middle metal through holes are used to connect the component pins between each layer.
Mounting hole: used to secure the circuit board.
Wire: electrical network copper film connected to the | foot of the component bow.
Connector: A component used to connect circuit boards.
Filling: Copper coating for ground wire network can effectively reduce impedance.
Electrical boundary: Used to determine the size of the board, all components on the board can not exceed this boundary.