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On the evening of January 18, Leman Optoelectronics released its 2021 annual performance forecast. It is expected to achieve operating income of 1.25 billion yuan to 1.32 billion yuan in 2021, a year...[Details]
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The concept of three-phase synchronous motor
The three-phase synchronous motor is a type of AC rotating motor, named because its speed is always equal to the three-phase synchronous speed. The...[Details]
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PTP/GPTP
In the car, vehicle time uses gptp to synchronize vehicle time. gptp is a simplified version of ptp. The specification definition comes from IEEE 802.1AS. Theoretically, it can achiev...[Details]
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1. In STM32, there are five clock sources: HSI, HSE, LSI, LSE, and PLL. ①HSI is a high-speed internal clock, RC oscillator, with a frequency of 8MHz. ②HSE is a high-speed external clock that can be c...[Details]
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Q: Can I turn an RF source on or off within 200 ns? A: In pulsed radar applications, the high power amplifier (HPA) needs to be turned on/off quickly during the transition from transmit to rec...[Details]
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Except for the automotive industry, the market environment remains weak; the outlook for fiscal year 2024 has been adjusted based on factors such as currency and market weakness. First quarter of ...[Details]
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2019 is the first year of 5G commercialization, and it is inevitable that 2G and 3G will be phased out. This trend brings up an unavoidable question: once 2G and 3G are phased out, what will happen t...[Details]
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In the Math Channel Application Series 9, we introduced the process of calculating the theoretical MAF value. Today I want to use the relevant formula to calculate the actual MAF value of a turboch...[Details]
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I suddenly realized that my data seemed to have been in the right place. Seeing this, I tried it again and found that it was the same no matter where I put DMA_Cmd(DMA1_Channel1, ENABLE);~~~ This ...[Details]
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Download address: https://pan.baidu.com/s/1-oGcJ0p-iV4WZ9d6lL0KaA Extraction code: 7v35 Espressif4_4_1 streamlined portable: https://download.csdn.net/download/qq_29246181/86399639 VSCode1.61_Embed...[Details]
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In order to effectively save the transmission bandwidth of voice data and the disk space of the storage system, it is necessary to reduce the encoding bit rate as much as possible while ensuring ...[Details]
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1 Introduction
With the development of millimeter wave technology, higher requirements are placed on the performance of switching power supplies. In addition to requiring the power supply ...[Details]
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Today, the rise of the third wave of artificial intelligence is an indisputable fact. We know that this wave of artificial intelligence is not only a technological innovation, but also an industrial ...[Details]
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By Xia Xu and Zhu Xuetian, China Telecom Research Institute, ZTE Technologies
Different from traditional communication networks such as the fourth generation mobile communication (4G) technolo...[Details]
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Knowing the main power switch location of ABB industrial robots is essential to ensure the safe operation and maintenance of the robots. In this article, we will introduce the main power switch loc...[Details]
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