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1. Circuit Principle The inverter is divided into four parts, each of which is made into a PCB board. They are "power main board"; "SPWM drive board"; "DC-DC drive board"; "protection board". 1. P...[Details]
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Recently, Beijing Alled Microelectronics Technology Co., Ltd. (hereinafter referred to as Alled) underwent industrial and commercial changes. New shareholders included Huawei-affiliated companies She...[Details]
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A jump instruction
Jump instructions are used to implement program flow jumps. There are two ways to implement program flow jumps in ARM programs:
- Use special jump instru...[Details]
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According to Siemens (China) Company, CECEP Qinghai Xitieshan Photovoltaic Power Station has successfully passed the State Grid's on-site test for low voltage ride-through and frequency disturbance...[Details]
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"We will build 600,000 5G base stations and ship 180 million 5G mobile phones within this year." On June 6, the day when my country's 5G licenses were officially issued for one year, Lu Chuncong, dep...[Details]
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In order to enrich the electronic functions of cars, OEMs have been installing various ECU components on cars. From 1993 to 2010, the number of ECUs used in Audi A8 models increased from 5 to more th...[Details]
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Merck, a leading global science and technology company, announced that it has completed the acquisition of Intermolecular. The $62 million acquisition will further strengthen Merck's material technol...[Details]
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In traditional intelligent transportation systems, key equipment includes traffic flow detection, signal control, video surveillance, induced release, event detection, checkpoints, and electric po...[Details]
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Before CES 2020, Samsung released two long-exposed mobile phones, the Galaxy S10 Lite and Note 10 Lite. Interestingly, the two phones share the same 6.7-inch 1080P+ resolution (2400 x 1080, 39...[Details]
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On the morning of March 4, Meng Qing, Chairman of Shanxi Guorun Energy Storage Technology Co., Ltd., and his delegation came to the School of Energy and Power Engineering of North University of Chi...[Details]
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1 Introduction
In recent years, in the process of implementing urban and rural
power grid
transformation, the design scheme of low-voltage parallel capacitor reactive power compensatio...[Details]
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1. Complete functions, safe, rapid and accurate fault testing. The cable fault tester uses low-voltage pulse method and high-voltage flashover method for detection, and can test various cable fault...[Details]
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Advantages and problems of ultrasonic gas flowmeter Ultrasonic gas flowmeter is a commonly used gas flow measurement instrument with the characteristics of accurate measurement, stable performance, ...[Details]
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The development of economic globalization has made exchanges between regions more and more frequent, and as the preferred means of transportation for long-distance travel, airplanes are increasin...[Details]
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A soft starter is an electrical device used to start a motor. Its main function is to reduce the current impact when the motor starts, protect the motor and the power grid, and extend the service l...[Details]
PCB Design
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