Appearance The MD disc is indeed very small, the size we usually see is 7cm x 6.75cm x 0.5cm, but this time it is the outer protective shell, the real MD inside The diameter of the disc is only 6.4cm...

Composition classification ①Pure iron and low carbon steel Carbon content is less than 0.04%, including electromagnetic pure iron, electrolytic iron and carbonyl iron. It is characterized by high sa...

Brief History The production and application of soft magnetic alloys has a history of more than 100 years. In 1890, the production of thermomagnetic pure iron (or low carbon steel) was used to manuf...

In 1917, GWElmen discovered that (30～90) Ni-Fe alloy has good soft magnetic properties under low and medium magnetic fields, and the initial permeability of 78Ni-Fe ( μ0) is the highest and is called...

Introduction Sendust alloy refers to the high permeability soft magnetic alloy with sendust as the main component element, also known as sendust alloy. A brief history In 1931, Japan’s increase in...

Introduction to terms Magnetic materials with low coercivity, also known as high permeability materials. In the power industry, it is used to manufacture iron cores for electrical equipment such as...

Brief introduction Machinery Industry Press This book is designed for "Printed Circuit Board Design and Production" and "Electronics Specially compiled textbooks for professional courses such as "Cir...

Introduction This book is a training material designated by the Printed Circuit Technology Department of the Production Technology Credit Branch of the Chinese Institute of Electronics. The book cons...

Text Take the printed circuit board as the mounting substrate, install electronic and electromechanical components, devices or other printed circuit board components on it, and use the printed circu...

Introduction "Printed Circuit Board Plating" carries out the technical requirements and specifications of mechanical processing, etching process, screen printing, hot air leveling related to printed...

Development process Since the printed circuit board is not a general terminal product, the definition of the name is a bit confusing. For example, the motherboard for personal computers is called th...

Introduction The application program interface is: "The code used by the ‘Operating system’ or ‘library’ for application calls." Its main purpose is to allow application developers to call a set of...

Development History Applied Materials started business in China in 1984 and became the first foreign-funded semiconductor production equipment supplier to enter China. In 2001, Applied Materials esta...

Definition of terms In the National Standard of the People’s Republic of China "Quality Management System Fundamentals and Terminology" GB/T19000—2008/ISO9000: 2005 (instead of GB/T19000—2000), Secti...

Steps The first step is to use the editing program to send the compiled source program to the computer in a certain writing format. The editing program will add or add to the source program according...