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In the fourth quarter of 2019, MLCC prices gradually bottomed out along with the electronics industry, and inventory levels dropped to a healthy level of 70 days. Currently, in terms of global MLCC s...[Details]
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According to the National Development and Reform Commission on June 30, the Catalogue of Industries Encouraged for Foreign Investment (2019 Edition) has been approved by the CPC Central Committee and...[Details]
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China Energy Storage Network News:
Blockchain is expected to serve as an important breakthrough for independent innovation in core technologies, accelerating the development of technological ...[Details]
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绝缘栅极双极性晶体管(IGBT)是具有高输入阻抗和大双极性电流能力的少数载流子功率器件。由于这些特性,IGBT非常适合电力电子中的许多应用,尤其是电机驱动器、不间断电源(UPS)、可再生能源、电焊机、感应加热炉具和其他需要高电流和高电压能力的 逆变器 应用。短路耐受能力也是IGBT用于逆变器应用的一项重要功能。在逆变器驱动UPS或电机应用中,IGBT如果在故障电机、输出短路或输入总线电压直通情形中...[Details]
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The conversion between PLC switch signals and analog signals is also a classic PLC application problem. To explain how PLC switch signals and analog signals are converted in PLC applications, we fi...[Details]
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The wireless microphone pull-rod teaching stick introduced in this article combines an FM wireless microphone and a portable pull-rod teaching stick into one. The metal part of the teaching stick is ...[Details]
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When the circuit is powered on or hot-swapped, a large startup current and voltage fluctuation will be generated, which will affect the normal operation of the equipment and even cause damage to th...[Details]
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"Triggering" is definitely the soul-level concept of digital oscilloscopes. Without the right trigger conditions, waveform observation is out of the question. Although many engineers are familiar wit...[Details]
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Introduction
The highly integrated advanced RF designs available today allow engineers to design RF systems with performance levels exceeding previous levels. Recent advances in blocking, sensiti...[Details]
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Electrolyte analyzers can measure the potassium (K), sodium (Na), chloride (C1), calcium (Ca), pH value, etc. in biological specimens such as serum, plasma, whole blood, and diluted urine, and pr...[Details]
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I. Introduction
In many industrial productions, such as chemical, petroleum, metallurgy, electricity, water treatment and other industries, it is often necessary to detect and...[Details]
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Wistron's riot-hit iPhone factory in Narasapura, India, is unlikely to open anytime soon, and may not open before the end of the month as state officials expect, according to a report by The Economic...[Details]
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Fourth quarter net revenue of $2.75 billion; gross margin of 39.3%; operating margin of 16.7%; net profit of $392 million Full-year net revenue: $9.56 billion; gross profit margin: 38.7%; operating...[Details]
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0 Introduction
The impact of electric railway traction load on the power system is mainly reflected in power factor, negative sequence and high-order harmonic current, etc. The problem of ...[Details]
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Electric tricycles, also known as electric tricycles, are an environmentally friendly and energy-saving means of transportation that have been widely used in logistics, express delivery, sanitation...[Details]