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Copper foil prices are rising, and expansion has become a consensus in the PCB industry

Domestic high-frequency and high-speed copper clad laminate production capacity is insufficient.   The copper foil industry is a capital, technology, and talent-intensive industry with high barriers to entry. According to different downstream applications, copper foil products can be divided... Read More

What are the design skills of op amp circuit PCB?

Printed circuit board (PCB) wiring plays a key role in high-speed circuits, but it is often one of the last steps in the circuit design process. There are many problems with high-speed PCB wiring, and a lot of literature has been written on this topic. This article mainly discusses the wiring of ... Read More

You can judge the PCB surface process by looking at the color

here is gold and copper in the circuit boards of mobile phones and computers. Therefore, the recycling price of used circuit boards can reach more than 30 yuan per kilogram. It is much more expensive than selling waste paper, glass bottles, and scrap iron. From the outside, the outer layer of the... Read More

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
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