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After the inverter restores the factory parameters, press the "RUN" key, the inverter drives the motor in the direction of rotation, which is called forward. If the rotation direction at this time ...[Details]
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According to Pigtou, Onleaks and Pigtou recently jointly exposed a set of high-definition renderings of the Samsung Galaxy Note 20+, showing more complete design details of this device. ...[Details]
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The basic error formula of digital high-voltage meters can usually be expressed in the following two ways: a) The certain error indicated by the sum of the two errors, and the b value in the erro...[Details]
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5. Probe and accessories accuracy verification
The following figure is an example: the measured signal is a clock signal with a frequency of 456MHz and an edge time of about 65ps, and the...[Details]
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On April 16, 2019, Apple and Qualcomm announced a settlement one day after public debate in the U.S. federal court. At the same time, Intel also announced its intention to exit the smartphone cellula...[Details]
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The VF voltage of LED light sources for lighting is very low, generally VF = 2.75-3.8V, IF is 15-1400mA; therefore, the output voltage of the LED driver IC is VF XN or VF X 1, and the IF constant cur...[Details]
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A multimeter (abbreviated as multimeter) is a multi-function, multi-range, portable electronic instrument. It can be used to measure physical quantities such as DC current, voltage, AC current, volta...[Details]
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When an oscilloscope user selects an oscilloscope for critical measurements, the oscilloscope's key parameters are often the only criteria for choosing which oscilloscope to use. The most important ...[Details]
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According to foreign media reports, supercapacitors are electronic devices that can store and release energy and have a layer of electrolyte - a conductive material that can be solid, liquid, or betw...[Details]
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Predictions for the main developments in e-health over the next five years: cloud, modularity, genetics, and networking.
John D. Halamka, MD, MS, is a professor of medicine at Harvard Medical ...[Details]
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China Energy Storage Network News:
"The overall idea of the construction of the energy internet demonstration project in Mengxi High-tech Zone is to utilize the storage and power generation...[Details]
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【Introduction】Today, cars have more and more additional functions, and people's expectations for their reliability and performance are increasing year by year. However, tracing back along the product...[Details]
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Electromagnetic flowmeter is a flowmeter that measures flow rate and has certain applications in many industries. Electromagnetic flowmeter has many advantages such as small pressure loss, wide measu...[Details]
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The Human Centric Laboratory at Toshiba's R&D Center has developed the basic technology for a highly visible head-up display (HUD) (Figure 1). Its feature is that the driver can check the displayed...[Details]
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The method of connecting a single-phase inverter outputting three-phase 220V to a three-phase motor is as follows:
Determine the input power and output voltage of the inverter
First...[Details]