kicad pcb

(1) role of the process control block-the process has a unique entity; Because the process control block records the existence and characteristics of the process, the PCB and the process are born to death. When a process is created to establish a PCB for it, the process is revoked, the system will be subject to its PCB. The OS controls the process according to t

0 Preface PCB drawing process is undoubtedly a big head, when the end of the long wiring phase, you also need to add a beautiful screen for your components, the end of these work and the last few steps need attention, this time to summarize the PCB post-processing work and inspection work. 1 Check that the device is fully positionedAn easy way to do this is to select the menu display->status to see if the

Wave automatic soldering technology has been used in the electronics industry for many years, but the late failure of solder joints is still a headache, which greatly affects the quality and reputation of electronic products.This paper intends to make a preliminary study and discussion on the basis of practical experience.The so-called "late failure of solder joints", refers to the surface appears to be the quality of the solder, there is no "lap welding", "Half welding", "pull the point", "copp

Formula for propagation delay of cabling in PCB The first half is information from altera. The propagation latency (tPD) is the time required to transmit a signal from one point to another. Transmission Line propagation delay is a function of the relative dielectric constant of materials. Propagation delay of micro-Strip Layout You can use formula 5 to calculate the propagation delay of the strip layout. Formula 5: Delayed propagation in the line

Address: http://www.sig007.com/usesoft/74.html Schematic Design Software: orcad can be used, and supports a large number of netlist, which is basically industry standard. PCB layout Software 1. Protel, now push alicloud designer. The mainstream of low-end design in China is basically useless in foreign countries. It is easy to learn and suitable for beginners.High Computer Configuration Requirements. People who use Protel in China still have

General principles of PCB Board component layout:The general principles that designers need to follow in the layout of PCB boards are as follows.(1) Components preferably single-sided placement. If you need to place components on both sides, placing pin components on the bottom layer (Bottom layer), it is best to place the components one-sided. It is possible to cause the circuit board is not easy to place,

Circuit Design: This is a very big concept, from the voltage intensity can be divided into strong electric circuit design and Weak Current Circuit Design; from the design tool can be divided into manual drawing and electronic auxiliary design, the circuit types can be divided into analog circuit design and digital circuit design. Icdesign: The IC Design refers to the chip design, that is, the design of the circuit on a crystalline silicon chip, which requires a high process and technology. Th

Linux drawing schematic and PCBThe famous Allegro and classic Protel 99SE under Windows are not supported by Linux operating systems, and it is unavoidable to look at schematics and PCBs for Linux driver development.There are three general ways of doing this:1. Host uses Windows system, Linux installed in virtual machines such as VMware so that you can use the software under Windows to see the schematic and PCB;2. In turn, a Windows virtual machine is

dip8 is double-row, each row has four pins, the distance between the two rows is mil, the distance between the pad is 100mil. Sipxx is the encapsulation of a single row. And so on. It is worth noting that the packaging of transistors and variable resistors is the most headache. the PINs may not be the same for the same packaging. For example, for packaging such as TO-92B, usually 1 foot is E (emission pole), and 2 feet may be B (base pole), or C (collector ); similarly, the three-legged device

Use the Keepout layer to determine the size of the line:Follow the steps in the diagram:1. Select the corresponding tag of the menu bar2. Select "Place lines" and draw line options3, in the black area of the PCB project can be drawn lineNow the line you draw is in the keepout layer, the line is pink!The boundary of the line is the boundary of the board"If you draw a line that is not pink, you need to re-select the Keepout layer!" 】Make the

PCB design software Cadsoft Eagle Professional v7.5 multilingual Win64 1CDCadsoft Eagle Professiona is an easy-to-use printed circuit board design software that includes a schematic editor, PCB editingand automatic wiring three modules, convenient for the designer to operate. Cadsoft Eagle Professiona Support Chinese versionDownstream products 2015.11 1CD industry-leading

. The specific capacitance is best for the same noise compensation as the self-resonant frequency, and we measure this phase relationship with this frequency. When the disturbance zone to the distance of the capacitance, the phase of the compensation current and the noise source phase is exactly the same as 180°, that is, the full reverse phase, when the compensation current is no longer in effect, the decoupling effect is invalid, the compensated energy can not be delivered in time, in order to

component encapsulation, and dip8 is double-row, each row has four pins, the distance between the two rows is mil, the distance between the pad is 100mil. Sipxx is the encapsulation of a single row. And so on. It is worth noting that the packaging of transistors and variable resistors is the most headache. the PINs may not be the same for the same packaging. For example, for packaging such as TO-92B, usually 1 foot is E (emission pole), and 2 feet may be B (base pole), or C (collector ); simil

Take Altium Designer 6.9 for example:1. Click Dxp→run Script.2. Click Browse to open: ad's installation directory under \altium Designer 6\examples\scripts\delphiscript scripts\pcb\pcb Logo Creator\ PCBLOGOCREATOR.PRJSCR file3. Select Runconverterscript, then click OK.4. load the BMP file and select which layer you want to put on the PCB, click OK, and that's goo

Project Processing capacity Process details Number of layers 1~6 Layer The number of layers refers to the number of electrical layers in the PCB (the number of copper layers). At present Jia Lixin only accept 1~6 layer board. Plate type FR-4 Plate Plate type: Cardboard, half glass fiber, all glass fiber (FR-4), aluminum substrate, at present Jia Lixin only accept FR-4 plate. As show

Label: HTTP Io strong SP Div C on r ef 1 feet = 12 inch 1 inch = 1000 mill Mil 1mil = 25.4um 1mil = 1000uin (MIL ears sometimes become British) 1um = 40uin (some companies call micro-inches as microphones, but they are actually micro-inches) 1 oz = 28.35g/square foot = 35 microns H = 18 microns 4mil/4mil = 0.1mm/1mm mm linewidth 1asd = 1 AMPS/square meters = 10.76 AMPS/square feet 1 AM = 1 amps min = 60 couplet is mainly used for precious metal plating such as gold plating 1 square me

PCB cabling procedure Reprinted from: http://blog.21ic.com/user1/6960/archives/2011/83333.html I. Circuit Board Design ProcedureGenerally, the most basic process of designing a circuit board can be divided into three steps.(1). Circuit Principle The schematic design of the circuit diagram is mainly the schematic design of protel099. System (Advanced schematic) to draw a circuit schematic. In this process, make full use of the various sc

When we conduct PCB cabling, we always face two or three kinds of situations on one board. The silly practice is of course, regardless of the case of November 21, copper is applied as long as it is the ground. This is not a problem for low-speed boards or boards that are insensitive to interference. Otherwise, the Boards may not work properly. Of course, if there are many places on a board, even if the Board has no requirements, but from a rigorous an

Altium Designer's PCB footprints are often seen in the same package, such as the IPC low density (lower density), IPC medium density (medium density), IPC high density (dense), such as TSSOP16, Why do you say that? IPC is the abbreviation for the American "Printed Circuit Board Association" ("the Institute of printed circuit").The "Printed Circuit Board Association" was renamed several times, but the IPC abbreviation has remained unchanged. IPC has de

1. File-->page SetupPrinter paper A column is the printing paper settings, no longer wordy.The main is the scaling column: ScaleMode selection: ScaledprintThe following scale fills 1, which represents 1:1 of the proportional print. such as 1:2, then click the Advanced tab in Figure 1 to enter the print content settings.Under the Printoutlayers project, remove the top overlay (right-click-->delete)The following is shown in Project Setup 2.I do the general is a single-layer board, so, generally on