午夜夜伦鲁鲁片免费无码-国产裸拍裸体视频在线观看-亚洲无码视频在线-学生妹亚洲一区二区-国产亚洲欧美日韩亚洲中文色

鑫景福致力于滿足“快速服務,零缺陷,輔助研發”PCBA訂購單需求。
PCBA方案設計
PCBA方案設計
Let's see what process PCB design needs to go through
29Nov
Jeff 0條評論

Let's see what process PCB design needs to go through

A PCB designmainly includes defining product requirements, PCB hardware system design, devICe selection, PCB drawing, PCB production proofing, welding debugging and other steps. What should be paid attention to in these steps? Xiao Bian will take you to fine articles, and must do so!

1、 Clarify requirements

At the beginning of a hardware PCB design, the first thing to do is to define the product requirements, which mainly includes defining the functional requirements and shape. The main functions need to be clarified. A few additional functions can be added later, but the main functions of the product cannot be affected. The determination of product shape is very important, which will affect the later PCB drawing and component selection.

2、 Hardware system design

pcb board

The hardware system design shall determine the power supply mode, sensor type, communication mode, human-computer interaction mode, reserved interface, etc. of the product according to the functional requirements of the product. Generally, Visio can be used to draw the system block diagram. The system block diagram should be able to describe the relationship between each module circuit of the hardware system and the module components of the whole system.

3、 Device selection

At this stage, relevant devices need to be selected according to their own product functions, generally including the selection of power supply, master control, sensor, communication, storage and other chips. The selection needs to consider the function, price, supply and other factors of the chip to select a chip suitable for your product. The selection channels of chips can be compared through large chip electronic component stores such as Lichuang Mall, Yunhan Core Mall, and Dejie Electronics.

PCB design

4、 PCB drawing

The EDA software involved in PCB drawing. At present, the mainstream PCB design tool software used by doMEStic engineers and technicians engaged in circuit design are Allegro, PADS and Altium Designer. Beginners recommend Altium Designer. There will be more online tutorials.

5、 PCB production proofing

After the PCB is designed, you can go to the PCB manufacturer for proofing. Before production, you need to provide the manufacturer with production documents. One way is to directly provide PCB Documents. This method will have the risk of product leakage, so it is safer to provide gerber documents. The price of sample proofing is generally 50-100 yuan, and the delivery time is generally 24 hours. Of course, special PCB will be different. It is recommended to go to Huaqiang PCB, Jialichuang, Jiepei and other large manufacturers for proofing to avoid abnormal debugging due to PCB production problems. This situation will lead you to doubt life later.

6、 PCB welding test

After PCB and components are in place, they can be welded. Necessary tools for welding: soldering iron and air gun. Whether tweezers are needed or not depends on the technology. Welding is generally divided into direct manual welding and brushing steel mesh welding. Direct welding tests the technology, and the welding is not beautiful. If the steel mesh is brushed for welding, you can place an order for the steel mesh together during PCB production. Generally, a steel mesh is 50. After painting solder paste on the steel mesh, mount the patch on the machine if conditions permit, or put it manually if not. Arrange a furnace for reflow soldering, or blow it with an air gun.

點擊
然后
聯系
主站蜘蛛池模板: 一二三四社区在线中文视频 | 日韩av高清无码| 18禁成年无码免费网站无遮挡| 亚洲在av极品无码| 久久久久久欧美精品se一二三四| 精品无人区一区二区三区在线| 久久久久国色av∨免费看 | 激情综合色综合啪啪五月丁香| 亚洲日韩色欲色欲com| 国产亚洲日本精品成人专区| 国产乱人伦精品一区二区| 免费高清av一区二区三区| 无码av无码天堂资源网| 97国产揄拍国产精品人妻| 精品熟女日韩中文十区| 国产女人爽的流水毛片| 香蕉久久久久久av成人| 亚洲日韩精品射精日| 少妇被躁爽到高潮无码人狍大战 | 国产成人精品综合久久久| 国产精品久久福利新婚之夜| 国内少妇偷人精品视频| 日本一区二区在线高清观看| 国产美女裸体无遮挡免费视频高潮 | 久久久久高潮综合影院| 国内精品久久久久久无码不卡| 国产成人精品三级麻豆| 亚洲日韩av一区二区三区四区| 国产精品日本亚洲欧美| 亚洲同性猛男毛片| 亚洲成av人片一区二区| 亚洲精品国产成人99久久6| 久久av嫩草影院| 尹人香蕉久久99天天拍| 18禁裸乳无遮挡啪啪无码免费| 久久成人亚洲香蕉草草| 688欧美人禽杂交狂配| 国产精品久久久久影院色| 久久一本加勒比波多野结衣| 亚洲欧美日韩中文在线制服| 在线亚洲综合欧美网站首页|