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What is a differential signal?
ByGrace January 4, 2025January 3, 2025
Differential transmission is a signal transmission technology. Different from the traditional method of one signal line and one ground line, differential transmission transmits signals on both lines. The amplitudes of the two signals are equal, the phases are 180 degrees apart, and the polarities are opposite. The signal transmitted on these two lines is a…
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Three special PCB wiring sharing
ByGrace January 4, 2025January 3, 2025
Introducing three special PCB routing techniques. The routing of PCB LAYOUT will be explained from three aspects: right-angle routing, differential routing, and serpentine routing: 1.Right-angle routing (three aspects) The impact of right-angle routing on signals is mainly reflected in three aspects: first, the corner can be equivalent to the capacitive load on the transmission line,…
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How to copy boards?
ByGrace January 4, 2025January 3, 2025
Speaking of copying boards, you may think that there is no technical content, but those who have really copied should have a deep understanding that it is not that simple. PCB copying has no software and can only be measured and drawn with a caliper, which is slow and has poor accuracy. It is very…
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Classification and selection of PCB materials
ByGrace January 4, 2025January 3, 2025
1.The FR-4 we often choose is not the name of a material The “FR-4” we often refer to is a code for a flame-resistant material grade. It means that the resin material must be able to extinguish itself after burning. It is not a material name, but a material grade. Therefore, there are many types…
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Introduction to copper clad laminates in PCB boards
ByGrace January 4, 2025January 3, 2025
In electronic devices, from small electronic watches and calculators to large computers, general electronic equipment, and military weapon systems, as long as there are electronic components, PCBs are used for interconnection between them. Printed Circuit Board (PCB), commonly known as PCB, is one of the important components of electronic products. The main function of PCB…
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Common optimization methods for high-speed signals in PCB design
ByGrace January 4, 2025January 3, 2025
Take LVDS signal as an example to explain the common optimization methods for high-speed signals in PCB design: LVDS (Low Voltage Differential Signaling) is a low-swing differential signal technology that enables signals to be transmitted at a rate of several hundred Mbps on differential PCB line pairs or balanced cables. Its low voltage amplitude and…
Read More Common optimization methods for high-speed signals in PCB design
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PCB Design Specifications for LED Switching Power Supply
ByGrace January 4, 2025January 3, 2025
PCB Design Specifications for LED Switching Power Supply In any switching power supply design, the physical design of the PCB board is the last link. If the design method is not appropriate, the PCB may radiate too much electromagnetic interference, causing the power supply to work unstably. The following is an analysis of the matters…
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Copper plating process in circuit board production
ByGrace January 4, 2025January 3, 2025
Perhaps we will wonder, the substrate of the circuit board has copper foil only on two sides, and the middle is an insulating layer, so do they not need to be connected between the two sides or multiple layers of the circuit board? How can the lines on both sides be connected together to allow…
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Why do circuit boards need copper cladding
ByGrace January 4, 2025January 3, 2025
Generally, there are several reasons for copper cladding. (1).EMC. For large-area ground or power copper cladding, it will play a shielding role. Some special grounds, such as PGND, play a protective role. (2).PCB process requirements. Generally, in order to ensure the electroplating effect or lamination deformation, copper is laid on PCB layers with less wiring….
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Improved circuit board welding to cause false soldering
ByGrace January 4, 2025January 3, 2025
1 Surface tension The cohesive force of tin-lead solder is even greater than that of water, making the solder spherical to minimize its surface area (under the same volume, the sphere has the smallest surface area compared to other geometric shapes to meet the requirements of the lowest energy state). The effect of flux is…
Read More Improved circuit board welding to cause false soldering
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A brief discussion on the causes of blistering on the copper-plated circuit board
ByGrace January 4, 2025January 3, 2025
Blistering is one of the more common quality defects in the production process of circuit boards. The complexity of the production process and process maintenance of circuit boards, especially in chemical wet treatment, makes it difficult to prevent blistering defects on the board surface. Based on many years of actual production experience and service experience,…
Read More A brief discussion on the causes of blistering on the copper-plated circuit board
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What is a solder mask opening?
ByGrace January 4, 2025January 3, 2025
The solder mask is the soldermask, which refers to the part of the printed circuit board that is to be painted with green oil. In fact, this solder mask uses a negative output, so after the shape of the solder mask is mapped to the board, it is not the green oil solder mask that…
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What are the problems with substrate pretreatment?
ByGrace January 4, 2025January 3, 2025
Some substrates may absorb moisture and some of the resin may not be properly cured when pressed into substrates. In this way, the drilling quality may be very poor due to the insufficient strength of the resin itself, and there may be a lot of drilling pollution or serious tearing of the resin on the…
Read More What are the problems with substrate pretreatment?
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Times are changing, but the golden rules of PCB design remain the same.
ByGrace January 3, 2025December 31, 2024
The following content of this article introduces the ten most effective design rules that electronic design engineers should keep in mind and practice when using design software for PCB layout design and commercial manufacturing. Engineers do not need to implement these laws in chronological order or relative importance; simply following them all can dramatically change…
Read More Times are changing, but the golden rules of PCB design remain the same.
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Ten Rules for High-Frequency Circuit Design and Wiring Skills
ByGrace January 3, 2025December 31, 2024
[First Trick] Multilayer Board Wiring High-frequency circuits are often highly integrated and have high wiring density. Using multilayer boards is not only necessary for wiring, but also an effective means to reduce interference. In the PCB Layout stage, a reasonable selection of the size of a printed circuit board with a certain number of layers…
Read More Ten Rules for High-Frequency Circuit Design and Wiring Skills

advanced circuits 4pcb

What is a differential signal?

Three special PCB wiring sharing

How to copy boards?

Classification and selection of PCB materials

Introduction to copper clad laminates in PCB boards

Common optimization methods for high-speed signals in PCB design

PCB Design Specifications for LED Switching Power Supply

Copper plating process in circuit board production

Why do circuit boards need copper cladding

Improved circuit board welding to cause false soldering

A brief discussion on the causes of blistering on the copper-plated circuit board

What is a solder mask opening?

What are the problems with substrate pretreatment?

Times are changing, but the golden rules of PCB design remain the same.

Ten Rules for High-Frequency Circuit Design and Wiring Skills

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