pcb book

Autocam Automation platform, front-end management orders, the back end of the task, the front-end UIL interface has board thickness, copper thickness, plate, surface treatment, layers and other information, And this information is not after the end of the end of the information needed. Take the bore hole compensation, the back end needs is the borehole compensation value, but the front end does not have this information, wants to get this drill hole compensation value is through the Multidimensi

(1) Error One In the schematic of the electrical connection, must appear red fork, otherwise not counted electrical connection: The following figure: (1) Error two The same network designator, on behalf of the electrical connection, when placing the net network designator, also should pay attention to, appear red fork to calculate electrical connection (1) Error three When making the schematic library, manually draw the schematic elements, note that the pin cross-out (otherwise all errors): (

Linux-based schematic and PCB, Linux-based schematic PCBLinux schematic and PCBThe famous Allegro and the classic Protel 99SE in Windows do not support the Linux operating system. To develop a Linux driver, you must check the principle diagram and PCB.There are three common practices:1. The host uses the Windows system and installs Linux in virtual machines such as VMWARE so that you can use the software in Windows to view the schematic diagram and

Objective: To add a logo to an enterprise design or personal work Tool used: alicloud desinger 6.6 Photoshop Background: The black and white images required in the operation are not black and white images that appear. But the file storage method is only black or white. You can edit the image file to open it. The image storage depth is 1 bit. Procedure: 1. Use PS to convert an image into a black/white BMP Image 1.1 Load 1.2 image> mode> greyscal 1.3 image> mode> bitmap 1.4 save 2. Use aladedes

PCB Optimization Design (i.)2011-04-25 11:55:36| Category: PCB design SMT technology is now very mature and widely used in electronic products, therefore, electronic product designers need to understand the SMT technology common Sense and manufacturability design (DFM) requirements. SMT process products, at the beginning of the design should be integrated into consideration of the production process, raw ma

From http://blog.mcuol.com/User/luozhen0810/Article/9700_1.htm Printed circuit boards (PCB) appear in almost every electronic device. If there are electronic parts in a device, they are all mounted on PCB of different sizes. In addition to fixing all kinds of small parts, the main function of PCB is to provide the electrical connection between the above parts. A

As a PCB engineer, what should I pay attention to in lay PCB? 1. After the power supply comes in, first go to the filter capacitor. After the filter capacitor is obtained, it is sent to the following device. Because the cabling on the PCB is not an ideal wire, there is a resistor and a distribution inductance. If the power is obtained from the front of the filte

problems, especially the EMC and EMI Problems in High-Speed PCB wiring. There are many conflicts and they are a headache. How can we solve these conflicts? Answer: 1. Basically, it is right to divide and isolate the modulus/number. It should be noted that the signal line should not be crossed through a separate place (moat), or the returning current path of the power supply and signal should be too large.2. the crystal oscillator is a simulated posit

Address: http://www.pcbres.com/pcbtech/circuit/20070612145.html URL: http://www.360doc.com/content/10/1227/16/4920904_81765495.shtml This section describes the PCB wiring and some common rules for PCB painting. When you use PCB layout, you can refer to these materials to draw a high-quality PCB. Of course, you can also

Address: http://blog.csdn.net/happyflovef/article/details/5584479 Design of multilayer PCB at, December 30 Before designing a multi-layer PCB, the designer must first meet the requirements of the circuit scale, circuit board size, and EMC.Determine the structure of the circuit board, that is, the four-layer, six-layer, or more layers of the circuit board. After determining the number of layersDeter

Toplayer (top) Draw the line is red, is the general double-sided board on the upper layer, single panel can not use this layer.The Bottomlayer (bottom) line is blue, which is the line above the single panel.MidLayer1 (middle layer 1) This is the first layer, as if there are 30 layers, the general design staff can not use, you do not have to control him, multi-panel time use. The default is not displayed in 99SE and is not available.Mechanical Layers (mechanical layer) (purple red) used for label

Design processA. Creating A network table1. Network table is the schematic and PCB interface files, PCB designers should be based on the use of schematic and PCB design tool characteristics, choose the correct network table format, to create a network table that meets the requirements.2. In the process of creating a network table, you should actively assist the s

Requirement Description: Candence basic knowledgeContent: From schematic to PCB specific stepsfrom: time of the poemFrom: Http://blog.163.com/tracy_zhangblog/blog/static/1938540202011117103433500/A. Schematic diagram1. Establish EngineeringAs with other drawing software, OrCAD manages various design files with project. Click the Start menu, then all Programs-Allegro SPB 15.5--design Entry CIS, select the first item orcad_capture_cis_option with in the

#include #include #include #include #define RUNNING 0#define READY 1#define WAIT 2typedef struct PCB{The identification number of the int pid;//processint priority;//The priority of the process, the greater the value, the higher the priority levelint pstatus;//The state of the processstruct PCB * next;//pointer to next process}PCB;

don't know what the resistance is for each encapsulation. What should I do?Answer: footprint is encapsulation. It is closely related to the component size and pins. It must be set in advance when making PCB.: axial_0.3 is generally used for 1/8 resistance (it is related to the Protel version. Different versions may be different. You can view the relevant PCB: Library File): Small capacitor: rad_0.1, rad_0.

PCB Optimization Design (II.)2011-04-25 11:41:05| Category: PCB design SMT technology is now very mature and widely used in electronic products, therefore, electronic product designers need to understand the SMT technology common Sense and manufacturability design (DFM) requirements. SMT process products, at the beginning of the design should be integrated into consideration of the production process, raw m

In the research of PCB reverse technology, the reverse diagram refers to the reverse diagram of the PCB based on the PCB File diagram or the reverse diagram of the PCB based on the actual product. It aims to describe the principle and working conditions of the PCB. The circu

PCB wiring specifications (Huawei) () Design Process A. Create a network table 1. the network table is the schematic diagram and PCB interface file. The PCB designer should select the correct network table based on the principle diagram and the features of the PCB design tool to create a network Table meeting the requi