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　　Last weekend, at the China Electric Vehicle Hundred People Forum held at the Diaoyutai State Guesthouse, Wan Gang, Minister of Science and Technology, summarized the achievements of new energy vehi...[Details]

　　We can adopt a variety of solutions for effective spectrophotometry and color separation according to actual conditions. We can use professional high-power LED spectrophotometry and color separatio...[Details]

1 Introduction 　　The switching power supply is generally composed of a main power circuit, an auxiliary power supply and a control circuit. The main power circuit is mainly used to supply power to t...[Details]

　　1 Introduction 　　After high-frequency switching power supplies entered my country in the 1980s, they entered my country's postal and telecommunications, power departments and other fields in large...[Details]

　　When a switching power supply has a problem, how should it be repaired ? This article specifically describes the methods and steps for repairing a switching power supply and some experience ...[Details]

The following issues should be noted when power MOSFET is used in switching power supplies . (1) The impedance of the gate circuit is very high and is easily damaged by static electricity. (2)...[Details]

Switching power supply is one of the focuses of the power supply market in recent years. Its biggest advantage is that it greatly reduces the size and weight of the transformer, thus reducing the s...[Details]

　　Today's switching regulators and power supplies are more sophisticated and powerful, but one of the challenges they face is that the ever-increasing switching frequency makes PCB design more diffic...[Details]

　　There are some experiences I can share with you: 　　(1) The output of the power supply circuit is connected to the board through a low-resistance, high-power resistor. In this way, the power supply ...[Details]

　　As mobile phones have more and more functions, users' energy demands for mobile phone batteries are also increasing. Existing lithium-ion batteries are increasingly unable to meet consumers...[Details]

　　The figure shows a 4W/5V switching voltage regulator circuit. This circuit uses the TOPSwitch series T0P100 device. The TOPSwitch (Three Terminal Offline PWM Switch) series device is a three-termin...[Details]

　　1 Introduction 　　RF power amplifiers are widely used in various wireless communication transmission equipment. With the rapid growth of mobile communication services, the requirements for low consu...[Details]

　　To design a product, first determine whose LED packaging structure; Next, consider how to adapt to these packaging forms; We have few options, and the optical structure is built on these packages;...[Details]

    With the popularization of LED electronic display screens and LED full-color screens, LED display screens have become a beautiful landscape in today's information society. Especially when night ...[Details]

　　In practical applications, improving the heat dissipation of LED display screens can not only effectively improve the efficiency of heat dissipation of LED display screens, but also save electricit...[Details]