Yesterday, a physical experiment instrument was dismantled, and the EDM timer was used. The error mark on the instrument label was the electromagnetic dot timer. After dismantling and analyzing from the structure diagram, it can be seen that there is an electronic circuit inside, and the working power source is 220 volt AC, which is [...]
In the previous article, we conducted a comprehensive analysis of the sources, classifications, and hazards of pollutants generated in electronic processes. This article will introduce the evolution and development trends of cleaning technologies involved in electronic processes, and classify the currently used cleaning technologies. By comparing the advantages and disadvantages of different types of electronic [...]
Board damage: In the world, billions of boards are shipped from manufacturers every day. In our daily life, the waste circuit boards are also continuously produced, and the accumulation of used circuit boards has caused great harm to the ecological environment and even our body. The electronic components in the circuit board contain heavy metals [...]
Frenchtown-aries Electronics, n.j., offers new adapter kits that allow users of outdated Aromat HB2E relays to replace pins without the need for circuit board design or rework. The new Aries correct-a-chip 08-305984-11 adapter features the adapter bottom of the old Aromat occupying area and top of the new tx2sa-1v solid state relay. The new relay [...]
Circuit board {PCB circuit board}, also known as printed circuit board, is the supplier of electrical connection of electronic components. Its development has a history of more than 100 years; Its design is mainly layout design; The main advantage of using PCB is to greatly reduce wiring and assembly errors, improve the level of automation [...]
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. High-speed PCB wiring has many aspects of problems, about this topic has been written a lot of literature. This paper mainly discusses the wiring problem of high-speed circuit from [...]
Circuit board name: ceramic circuit board, alumina ceramic circuit board, aluminum nitride ceramic circuit board, circuit board, PCB board, aluminum substrate, high frequency board, thick copper board, impedance board, PCB, ultra-thin circuit board, ultra-thin circuit board, printing (copper etching technology) circuit board. The circuit board makes the circuit mini and intuitive, which plays an important [...]
Circuit board proofing manufacturer production process 1. Contact the manufacturer Need to tell manufacturer of document, technological requirement, quantity above all. Second, cutting Objective: according to the requirements of engineering data MI, cut into small pieces on the large sheets meeting the requirements. Small pieces of sheet material that meet customer requirements. Process: plate material [...]
Gold and oxygen halftime transistor is not always the first choice of analog circuit board fast proofing circuit design engineers, because analog circuit design focuses on performance parameters. Such as transistor transconductance or current drive, BJT can better meet the needs of analog circuits. However, with the continuous improvement of gold-oxygen half-effect transistor technology, CMOS [...]
Protective coatings are used to enhance the performance and reliability of printed circuit board assemblies for use in harsh environments such as underwater, aerospace and military applications. Manufacturers of consumer electronics products are increasingly using contouring coatings as an economical way to improve the reliability of their products. When a printed circuit assembly board without [...]