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1. Research Background
In recent years, with the rapid development of radio systems such as wireless mobile communications and radar, the design of antennas and arrays has gradually become one...[Details]
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As LED lamps gradually become popular, traditional energy-saving lamps and fluorescent lamps are slowly withdrawing from the market. In the next few years, it is inevitable that LED lamps will bec...[Details]
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Transformer capacity calculation formula The power of the transformer is determined by the load, that is: P2 = U2II2I + U2III2II +...... + U2nI2In (VA) P1 = P2/η (VA) Where: P2 transformer secondary...[Details]
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Sealed maintenance-free lead-acid batteries have been widely used at home and abroad in recent years due to their advantages of good sealing, no leakage, and no pollution. However, it is difficult ...[Details]
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The author bought a lithium battery charging board and modified it into a charger with adjustable output voltage and output current.
The circuit is shown in the attached figure: This lithium b...[Details]
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Overview
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At present, when explaining the fast Fourier transform (FFT), the textbooks on digital signal processing in China all focus on complex FFT, an...[Details]
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Today, Huami Technology held its 2019 Strategic Media Communication Conference. Huang Wang, founder, chairman and CEO of Huami Technology, shared Huami's achievements in the wearable field over the p...[Details]
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1. Optical transmission system failure analysis
With the large-scale laying and use of optical cable lines, the reliability and security of optical fiber communication systems have attracted more and...[Details]
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Hello everyone, through the previous study, we have learned and become familiar with the use and learning methods of ICD2 simulation burner and enhanced PIC experiment board, and learned how to use s...[Details]
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On March 15, Evergrande Auto (0708.HK) announced that it had signed an agreement with Beijing Wutong Autolink Technology Co., Ltd., a subsidiary of Tencent Holdings, to establish a joint venture with...[Details]
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With
the development of 3G wireless networks and the continuous advancement of integrated circuit (IC) technology, portable consumer electronic devices have the ability to play a dazzling varie...[Details]
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1. Jitter of mechanical buttons
The keyboard, as an interface for intervention instructions to system operators, represents various specific operation commands with its specific key sequence. The...[Details]
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New energy vehicle drive motors include DC motors, AC asynchronous motors, permanent magnet synchronous motors, and switched reluctance motors, among which permanent magnet synchronous motors are t...[Details]
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The causes of spontaneous combustion of electric vehicles can be roughly divided into three categories: one is that the vehicle is parked and in an environment with high temperature, heavy rain and...[Details]
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On October 29, Xingyuan Environment's subsidiary Xinzhi Dual Carbon Technology Co., Ltd. and Jiaxing Economic and Technological Development Zone Smart City Operation Co., Ltd. signed a strategic co...[Details]