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Since the advent of low-power UPS, transformer-less UPS design has experienced more than 20 years of development. Today, most UPS below 30kVA are transformer-less, which means that UPS does not nec...[Details]
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0 Preface In 2008, the Science and Technology Olympics was strongly promoted, and the timing and scoring system was of utmost importance in the competition. A good timing and scoring system d...[Details]
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During the Spring and Autumn Period, Boya was very good at playing the qin, and he could create the sound of "high mountains and flowing water", but no one could understand its meaning. When the herm...[Details]
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Gree recently launched the Dasong 5G mobile phone, which made many people pay attention to Gree Chairman Dong Mingzhu's mobile phone making business again. It turns out that Dong Mingzhu has not give...[Details]
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As people's living standards improve, they have higher and higher requirements for lighting control, such as creating a comfortable lighting environment, saving electricity, and increasing the life...[Details]
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Introduction
The spectrum analysis method based on FFT can extract useful information from signals containing noise, and has important application value in the data processing of instruments and met...[Details]
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Author: Sun Yutong, Zhang Xin, Yu Zichun, Wu Yong, University of Electronic Science and Technology of China On
March 8, 2014, Malaysia Airlines flight MH370 lost contact and no wreckage has been f...[Details]
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Jiwei.com reported on September 26 (Text/Digital Control) that the Xiaomi TV Master Supreme Commemorative Edition will be released on the 28th of this month. It is currently known that the product su...[Details]
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Because Japan and China are cooperating on the issue of charging interfaces, we can make an effective comparison of the development of the two countries. In particular, Japan started early in t...[Details]
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With the rapid development of IC manufacturing technology, system on chip (SOC) is widely used in ASIC design. Microprocessor IP core is the core part of SOC system on chip. However, most companies a...[Details]
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The VG951 fiber optic gyroscope is developed based on the Sagnac effect, that is, the optical path difference of light in the Sagnac effect is proportional to the angular velocity of rotation, so the ...[Details]
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Recently, the "2017 Global Smart Inverter Application Technology Summit" was grandly opened in China Dragon City - Changzhou, Jiangsu. The conference held the award ceremony for the 2017 Global Sma...[Details]
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An economical household temperature measurement system composed of a single bus digital temperature sensor DS18B20 and 89C2051. Its temperature display is "-XXC", with an accuracy of ±0.5℃ and a te...[Details]
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Instructions 1. Correct steps It is divided into two circuits, the main circuit and the auxiliary circuit. The main circuit is adjusted by a large knob, and the auxiliary circuit is adjusted by a sma...[Details]
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On October 23, 2013, a Japanese company from the top 100 of the world's top 500 companies came to Zhejiang Lipu Crushing Equipment Co., Ltd. for the second time to order a graphite crushing and sph...[Details]
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