Description
Printed Circuit Board English printed circuit board, literally translated as "printed circuit board", as well as circuit board, PCB board, PCB, etc., is an indispensable part of electronic equipment in today's science and technology era, the appearance of circuit board for many functions of electronic products and make circuit integration possible. It 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: Metal hole for welding the pin of a component. Through holes: There are metal through holes and non-metal through holes, where the metal through holes are used to connect the component pins between the layers. Mounting hole: Secure the circuit board. Wire: The electrical network copper film that connects the component pins. Connector: The component that connects the circuit board. Filling: The copper coating of the ground network can effectively reduce the impedance. Electrical boundary: Determine the size of the board, and all components on the board can not exceed the boundary.
Circuit board classification:
The circuit board is divided into three large categories according to the number of layers: single panel, double panel, and multi-layer circuit board. Single panel, in the most basic PCB, the parts are concentrated on one side, the wire is concentrated on the other side. Because the wire only appears on one side, this PCB is called a single-sided circuit board. Dual panel is an extension of the single panel, when the single-layer wiring can not meet the needs of electronic products, it may need to use dual panel. Both sides are covered with copper and have wiring, and the line between the two layers can be guided through the hole to form the required network connection. Multilayer board refers to a printed board with more than three layers of conductive graphics layer and the insulating material between them are separated by layers, and the conductive graphics between them are interconnected according to requirements. Multilayer circuit board is the product of the development of electronic information technology to high speed, multi-function, large capacity, small volume, thin shape and light weight.
The basic design process of the circuit board can be divided into the following steps:
1. Design principle of circuit schematic diagram.
(1) It mainly uses the schematic editor of Protel DXP to draw schematic diagrams and generate network reports, which show the circuit principle and the link relationship of each component.
(2) Design the printed circuit board and generate the printed circuit board report. For example, generate various reports, such as generating pin reports, circuit board information reports, network status reports, etc., and finally print out the printed circuit diagram.
2. Circuit schematic design steps:
(1) Set the size and layout of the circuit schematic, remove the required components from the component library and place them on the working plane;
(2) Connect the components according to the design needs, adjust the wiring components;
(3) EMC design of structural cables,
(4) EMC design of PCB
(5) EMC design of principle devices,
(6) circuit board manufacturing and functional debugging
Main brands include: ABB, Bailey, GE, FOXBORO, Invensys TRICONEX, Bentley BENTLY, A-B Rockwell, EMERSON EMERSON, B&R, MOTOROLA, FUANC, REXROTH, KUKA, HONEYWELL, NI, DEIF, Yokogawa, WOODWARD WOODWARD, Ryan, SCHNEIDER SCHNEIDER, Yaskawa, MOOG, EPRO, PROSOFT and other major brands
The company focuses on DCS, PLC, robot, large servo four systems
The main products are various modules/cards, controllers, touch screens, servo drivers
Company advantage: Supply imported original products, professional production of spare parts
One year warranty, fast delivery time, complete supply !！！
① 24 hours email response (12 hours);
② For shipment outside Asia, please contact the seller.
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