Common Errors in Schematic Diagram (1) ERC report pin has no access signal I / O attributes are defined for pins when creating encapsulation; When creating or placing components, inconsistent grid attributes are modified, and pins and lines are not connected; When creating a component, the pin direction is reversed, and the non pin name …
PCB Design: Common Errors in Schematic Diagram and PCB Read More »
With the rapid development of mobile phone, electronics and communication industry, it also promotes the continuous growth and rapid growth of circuit board proofing industry. People have higher and higher requirements for the number of layers, weight, precision, material, color and reliability of components. Due to the fierce price competition in the market, the cost …
Short circuit of PCB is a very common problem in the production of PCB. There are generally two cases of short circuit, one is that PCB has reached a certain service life. The second situation is that the inspection work in PCB production is not in place. However, these small mistakes in the production of …
Whether amateur or professional technician, to learn to build and maintain their own projects and systems, we must understand how PCB works and can repair them in case of PCB failure. So, how to repair PCB? How can I master this skill? What is the benefit of mastering this skill for your career? Why do …
The common drilling holes in PCB are through hole(VIA), blind hole and embedded hole. What’s the meaning and characteristics of these three kinds of holes? Via(Through Hole) What is Via? Via is a common hole and used to direct or connect copper foil lines between conductive patterns in different layers of the circuit board. Because PCB is formed by many copper …
The reduction of the number of PCB layers can greatly save the cost, the price difference is very wide. It can almost be said that the cost of every two additional layers of PCB will double. That is to say, the cost of four layer PCB is twice that of two layer PCB, and the …
What’s Printed Circuit Board? Printed circuit board is also known as PCB and is the provider of electrical connection of electronic components. It has a history of more than 100 years. Its design is mainly layout design. The main advantage of using circuit board is greatly reducing wiring and assembly errors, improving the level of …
What’s The Difference Between Printed Circuit Board and Integrated Circuit Board? Read More »
Printed Circuit Board Faults 1. Poor Contact Poor contact between board and slot, broken cable, poor contact between wire plug and terminal, false soldering of components and so on all belong to this category. The solution to this kind of fault is to carefully check the suspected connector to see if there is obvious oxidation …
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Understand the composition and classification of printed circuit board, learn more and find information. Composition The circuit board is mainly composed of pads, vias, mounting holes, wires, components, connectors, fillers, electrical boundaries, etc. the main functions of each component are as follows: Pad: A metal hole used to weld pins of components. Vias: There are …
How to Inspect Short Circuit of PCB Board ? If it is manual welding, we should develop good habits Before welding, the PCB board shall be inspected visually and the key circuits (especially power supply and ground) shall be checked for short circuit with multimeter. After welding a chip, use a multimeter to test whether …
How to Inspect Short Circuit of PCB Board and Judge it? Read More »
