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Use a frequency converter to control the fan. When the fan stops, the motor runs due to inertia and regenerates electricity. The frequency converter gives off an overvoltage alarm. How should this ...[Details]
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According to news on January 19, China Telecom officially announced that at the beginning of the new year of 2024, China Telecom Satellite Communications Branch (referred to as "China Telecom Satelli...[Details]
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Huawei Terminal’s official Weibo account announced that the latest color scheme of the P30 series will be officially unveiled at the IFA exhibition on September 6. Huawei has submitted new ...[Details]
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The first mass-produced phone with an under-display camera, the ZTE Axon 20 5G, has already been released, but as expected, the photo quality of the under-display front camera is somewhat disappointi...[Details]
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The new iron fluoride cathode has more than twice the lithium capacity of traditional cobalt or nickel cathodes, and the raw materials are cheaper. As the demand for power batteries continues to ri...[Details]
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This is a power supply based on the variable regulator LM317. The input of the regulator takes about 28 volts DC and it will output a DC voltage from 1.25vdc to 25 VDC. To adjust the output voltage, j...[Details]
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Generally speaking, the speed of shaking test does not affect the measurement of insulation resistance. Because the reading on the megohmmeter reflects the ratio of the generator voltage to the curre...[Details]
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As a convenient, safe and reliable DC power source, batteries have been widely used in the fields of electricity, communication, military, etc. Temperature is an important parameter of batteries. I...[Details]
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Comparison table of modulation methods, application areas, and transmission methods of digital television standards
Satellite, cable, terrestrial and mobile wireless digital TV networks can us...[Details]
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Automatic weather station data collectors are generally designed based on single-chip microcomputers or PC/104 bus controllers, and have the characteristics of good compatibility with PCs, low power ...[Details]
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Recently, NIO has pushed the latest NIO OS 2.4.0 software version to NIO ES8 and ES6 owners (NIO OS version 2.0.0 and above) through FOTA . In addition to adding snow mode and driver's seat memory fu...[Details]
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High-end smartphones have started a trend of large displays. Except for a few 5-inch and 7-inch products that are between tablets and smartphones, most high-end smartphones have increased their displa...[Details]
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The Science and Technology Innovation Board Daily learned from the supply chain that Yangtze Memory's 64-layer solid-state drive is expected to be launched in the third quarter of this year. As ear...[Details]
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In order to quickly realize digital signal processing operations, DSP chips generally use special software and hardware structures. The following briefly introduces the basic structure of DSP chips...[Details]
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With the development of computer-related technologies, ARM embedded systems are being used more and more widely, and are becoming more and more closely integrated with people...[Details]