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Rookie to Expert - Hardware Engineer Advanced Road (b)

This time, engineers will find that they need to learn a lot of things. There may be ARM, FPGA, MCU, DSP, DDR, PCIE, USB, SATA, Ethernet, UART, IIC, SPI, RF, antenna, power supply, video, audio ... in a system.

Electrolytic capacitor precautions

Electrolytic capacitor due to the positive and negative polarity, so when used in the circuit can not reverse the connection.

Several PCB surface finish methods

Preface: To ensure a good PCB solderability or electrical properties. Because copper tends to be present in the form of oxides in the air, seriously affecting the solderability and the electrical properties of the PCB, the PCB needs to be surface-finish.

PCB layout design grid set tips

Design in different stages need to set different points, in the layout stage can be used to carry large grid layout of the components. For IC, non-locating connectors and other large components, you can use the 50 ~ 100mil grid accuracy of the layout, and for passive components such as small capacitors and inductors, the use of 25mil grid layout. The precision of the large grid facilitates the alignment and layout of the components.

How to solve the EMI problem of multi-layer PCB design

There are many ways to solve the EMI problem. Modern EMI suppression methods include EMI suppression coating, proper EMI suppression, and EMI simulation design. This article starts with the most basic PCB layout and discusses the role and design techniques for PCB layered stacks in controlling EMI emissions.

14 Important Features of the High Reliability PCB

At first glance, PCB is almost the same regardless of its internal quality. It isthrough the surface that we see differences, which are critical to the durability and function of the PCB throughout the lifespan.

DIY Mini PC Keyboard

A minimalistic PC keyboard design based on Arduino that offers a specific set of keys in order to play some online role games.

Dry film technology and performance

Printed circuit manufacturers want to use good dry film to ensure the quality of printed boards, stable production and improve efficiency. In recent years, with the rapid development of the electronics industry, the precision density of printed boards has been continuously improved. In order to meet the needs of printed board production, new dry film products have been introduced, and the performance and quality have been greatly improved and improved.

PCB Light Painting Operation Process

PCB light painting process is a very important part of PCB in the circuit transfer process. Any errors that occur in this link may bring serious problems to the subsequent process, so each step inside must be strictly controlled.

PCB board design experience sharing

As an electronic engineer, designing a circuit is a must-have hard work, and the principle design is perfect. If the board design is unreasonable, the performance will be greatly reduced, and even if it is serious, it will not work properly.

How can components be mounted on a PCB?

Now that we know that PCBs can provide mechanical support and electrical connections for electronic components, how are these electronic components mounted on the PCB?

Basic Knowledge of PCB Prototyping

In this case, we need to make holes in the board so that the pins can pass through the board to the other side, so the parts are soldered to the other side. Because of this, the front and back sides of the PCB are called the Component Side and the Solder Side.

PCB Circuit Board Testing, Inspection and Specification (3)

51-81

PCB Circuit Board Testing, Inspection and Specification (2)

26-50

PCB Circuit Board Testing, Inspection and Specification (1)

1-25

Why do PCBs have to be multi-layered

For the most basic PCB, the components are concentrated on one side, and the wires are concentrated on the other side. Because only one side can be wired, we call this PCB a single panel. Both sides of the double panel can be routed, so the wiring area is twice as large as that of a single panel, making it suitable for use on more complex circuits.

Advantages and Disadvantages of Different Surface Treatments of PCB

There are many types of surface treatment of circuit boards, which should be selected according to performance and requirements. The following are simple analysis of the advantages and disadvantages of various surface treatments of PCB.

Payment Matters

Impedance PCB Production Course

Impedance PCB final test eligibility criteria

Flexible PCB Electrical Test

Downstream operators usually require PCB manufacturers to do 100% electrical testing, so they will agree with PCB manufacturers on test conditions and test methods. Therefore, both parties will clearly define the following: