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The basic relationship between layout and PCB 2

Due to the switching characteristics of the switching power supply, it is easy to cause the switching power supply to produce great electromagnetic compatibility interference. As a power supply engineer, electromagnetic compatibility engineer, or a PCB layout engineer, you must understand the cau... Read More

There are as many as 29 basic relationships between layout and PCB!

Due to the switching characteristics of the switching power supply, it is easy to cause the switching power supply to produce great electromagnetic compatibility interference. As a power supply engineer, electromagnetic compatibility engineer, or a PCB layout engineer, you must understand the cau... Read More

How many kinds of circuit board PCB can be divided according to material? Where are they used?

The mainstream PCB material classification mainly includes the following: bai uses FR-4 (glass fiber cloth base), CEM-1/3 (glass fiber and paper composite substrate), FR-1 (paper-based copper clad laminate), metal base Copper clad laminates (mainly aluminum-based, a few are iron-based) are the mo... Read More

Grid copper or solid copper? This is a PCB problem worth thinking about​!

What is copper?   The so-called copper pour is to use the unused space on the circuit board as a reference surface and then fill it with solid copper. These copper areas are also called copper filling. The significance of copper coating is to reduce the impedance of the ground wire and impro... Read More

Sometimes there are many benefits to PCB copper plating on the bottom

In the PCB design process, some engineers do not want to lay copper on the entire surface of the bottom layer in order to save time. Is this correct? Does the PCB have to be copper plated?   First of all, we need to be clear: the bottom copper plating is beneficial and necessary for the PCB, but ... Read More

Four basic characteristics of PCB RF circuit

Here, the four basic characteristics of radio frequency circuits will be interpreted from four aspects: radio frequency interface, small desired signal, large interference signal, and adjacent channel interference, and the important factors that need special attention in the PCB design process ar... Read More

Control panel Board

The control board is also a kind of circuit board. Although its application range is not as broad as that of circuit boards, it is smarter and more automated than ordinary circuit boards. Simply put, the circuit board that can play a control role can be called a control board. The control panel i... Read More

Detailed RCEP: 15 countries join hands to build a super economic circle

  —-From PCBWorld The Fourth Regional Comprehensive Economic Partnership Agreement Leaders’ Meeting was held on November 15. The ten ASEAN countries and 15 countries including China, Japan, South Korea, Australia, and New Zealand formally signed the Regional Comprehensive Economic Part... Read More

How to use the “multimeter” to troubleshoot the circuit board

The red test lead is grounded, the pins in the red circle are all locations, and the negative poles of the capacitors are all locations. Put the black test lead on the IC pin to be measured, and then the multimeter will display a diode value, and judge the quality of the IC based on the diode val... Read More

Common testing technology and testing equipment in PCB industry

No matter what type of printed circuit board needs to be built or what type of equipment is used, the PCB must work properly. It is the key to the performance of many products, and failures can cause serious consequences. Checking the PCB during the design, manufacturing, and assembly process is ... Read More

What is a bare board? What are the benefits of bare board testing​?

Simply put, a bare PCB refers to a printed circuit board without any through holes or electronic components. They are often referred to as bare PCBs and sometimes also called PCBs. The blank PCB board has only basic channels, patterns, metal coating and PCB substrate.   What is the use of bare PC... Read More

PCB stackup

The laminated design mainly follows two rules: 1. Each wiring layer must have an adjacent reference layer (power or ground layer); 2. The adjacent main power layer and ground layer should be kept at a minimum distance to provide larger coupling capacitance;   The following lists the stack from ... Read More
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