Sep 24,2024

Excellent PCB component layout principles

Firstly, divide the area according to the functional units of the circuit, and consider all the components of the circuit as a whole. Divide each functional circuit unit into a general area according to the module, making the layout suitable for signal flow and maintaining consistent direction as much as possible.

Sep 24,2024

Chip manufacturers are cautious about the trade war, and if negotiations with China are successful, they won't fight anymore?

Although chip manufacturers have long complained about China's lax policies and attitudes towards intellectual property protection, many remain vigilant about the unclear consequences of a comprehensive trade war between the United States and China.

Sep 24,2024

Qualitatively judge the quality of field-effect transistors and transistors

Qualitatively judge the quality of field-effect transistors and transistors

Sep 24,2024

How to choose resistors in circuit design?

Resistors are one of the most commonly used components in electronic products, and basically any electronic product will have resistors inside. Resistors can be used as voltage dividers, splitters, and load resistors in circuits; It can form filters and delay circuits together with capacitors; Used as a sampling resistor in power or control circuits; Used as a bias resistor in semiconductor tube circuits to determine the operating point; Using resistors with special properties such as varistors and thermistors to prevent surge voltage, suppress surge current, and achieve over temperature protection, etc. Resistors are the most common and indispensable components in circuits. Choosing and using resistors well is crucial for the stable operation and reliability of products.

Sep 24,2024

The Development History of Resistors

Resistors are fundamental components in circuits. After testing the conductivity of various materials and discovering the presence of current, early scientists gradually developed the concept of resistance. Scientists have discovered that copper, gold, and aluminum are excellent conductors with low resistance, while air, mica, and ceramics are considered resistors because they can greatly restrict the flow of current. Although industry insiders have long known about its resistance performance, the reliable resistors we know today have never been born until Otis Boykin created the first inexpensive and reliable resistor in 1961, allowing scientists to accurately control the amount of current transmitted to a certain component. With his breakthrough, the resistance of resistors to extreme temperatures and oscillations was greatly reduced, ultimately making low-cost production possible. With the US military, IBM, and numerous consumer electronics manufacturers placing orders to purchase Boykin's new resistors, their presence is ubiquitous from household appliances and computers to guided missiles.

Sep 24,2024

Common power cable technology! Worth collecting!

What are the types of commonly used wires and cables according to their purposes?

Sep 09,2024

Common structures of soft hard composite boards

Rigid Flex PCB is a new electronic interconnect technology that integrates rigid printed circuit boards (PCBs) and flexible printed circuits (FPCs).

Sep 09,2024

What are the layers of PCB printed circuit boards, and what are the meanings and functions of each layer?

The signal layer is mainly used to arrange wires on printed circuit boards. Protel99SE provides 32 signal layers, including Top layer, Bottom layer, and 30 MidLayer layers.

Sep 09,2024

How to improve the problem of copper free holes in multi-layer PCB circuit boards?

Add high-pressure water washing and gel residue removal processes to holes that are prone to dust generation (such as holes with a diameter below 0.3mm containing 0.3mm).