2020-09-27

When analyzing the circuit, you can understand the actual working principle of the circuit by identifying the symbols of the various circuit components drawn in the diagram and the connections between them. The schematic diagram is a tool that reflects the working of electronic circuits.

2020-09-27

Electromagnetic compatibility refers to the ability of electronic equipment to work harmoniously and effectively in various electromagnetic environments.

2020-09-26

Impedance PCB refers to the PCB that needs impedance control. PCB impedance control means that under a high frequency signal, the "resistance" generated by a certain line layer to its reference layer in the transmission must be controlled within the rated range, so as to ensure that the signal will not be distorted in the transmission process.

2020-09-26

In the high-speed PCB design process, PCB stack design and PCB impedance calculation are the first steps. PCB impedance calculation method is very mature, so the difference between different PCB software calculation is very small. This ipcber uses si9000 as an example.

2020-09-26

The so-called PCB copper coating is to take the idle space on the PCB as the reference plane, and then fill the PCB with solid copper. These copper areas are also called copper filling.

2020-09-26

Design skills of high frequency circuit board 1. Improve the PCB design specification for high precision etching. Consider specifying a total line width error of + / - 0.0007 inches, managing undercut and cross sections of wiring shapes, and specifying plating conditions for wiring side walls. The overall management of wiring (conductor) geometry and coating surface is important to solve the skin effect problem related to microwave frequency and realize these specifications.

2020-09-25

In the process of PCB design, before wiring, we usually stack the items we want to design, and calculate the pcb impedance

2020-09-25

PCBA is a kind of printed circuit board with various components soldered on its surface. Many people pay attention to its reliability of long-term and high-frequency operation, and need to know its storage life. Generally, the shelf life of PCBA is 2-10 years, which is mainly affected by the following factors:

2020-09-25

Any trace on PCB will cause time delay to the signal when passing through high frequency signal.

2020-09-25

The process of surface adhesion assembly, especially for small spacing components, needs continuous monitoring and systematic inspection. For example, in the United States, the solder joint quality standard is based on ipc-a-620 and national solder standard ANSI / j-std-001.