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The leakage detector can detect the operating current of the current type electric shock protector and the unbalanced leakage current that is smaller than the current type electric shock protector....[Details]
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1. In order to achieve quasi-3-state, the P0 port of 51 single-chip microcomputer adopts OC output, that is, collector floating output, also called totem pole output. This circuit structure has only ...[Details]
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Four excitation methods for synchronous motors, including DC generator excitation, AC generator excitation, thyristor excitation and third harmonic excitation, are described along with the characte...[Details]
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Working on high voltage circuits is extremely dangerous. Capacitors can keep the high voltage in the system alive for a considerable time even after the power is disconnected.
Using an LED with a...[Details]
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We designed an integrated chip test system using AT89C52 single-chip microcomputer. This test system can realize the function detection of TTL, CMOS series chips and some common key switches common...[Details]
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1. No light spots or waveforms The power is not turned on; the brightness knob is not adjusted properly; the positions of the X and Y axis shift knobs are misaligned; the Y axis balance potentiometer...[Details]
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Before the launch of iPhone X, Apple had been using LCD screens in its iPhone product line. The last product equipped with an LCD screen was the second generation iPhone SE released in April last yea...[Details]
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SMIC is the largest and most advanced wafer manufacturing plant in China. The most advanced process currently in mass production is 14nm, but compared with TSMC and Samsung's 5nm, it is still two or ...[Details]
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Since 2017, the hottest trend in the mobile phone industry is full screen. Most mobile phone brand manufacturers have focused on full screen technology and strived to gain greater benefits from the...[Details]
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Government leaders and elected officials will not only face enormous challenges in 2022, but also grasp the opportunities brought by the response to the epidemic and economic recovery, changing polit...[Details]
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On September 26, the construction of Penghui Energy's Qingdao Energy Storage Battery Zero Carbon Manufacturing Base officially started! At the groundbreaking ceremony, Qingdao Vice Mayor Xie Hongji...[Details]
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According to Reuters, British Health Secretary Matt Hancock said on Sunday local time that Huawei can continue to participate in the development of 5G telecommunications infrastructure, but with clea...[Details]
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Introduction With the continuous development of industrial technology, the requirements for single-chip microcomputer control are getting higher and higher. Single-chip microcomputers are requir...[Details]
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The torrent of the new energy era has begun to sweep the market, and the era of fuel vehicles has slowly begun to draw to a close, but the electrification transformation cannot be completed overnig...[Details]
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On October 12, Xinjiang Company and some tertiary industry companies were invited to attend the investment promotion symposium and signing ceremony held by the Wusu Municipal People's Government an...[Details]
Power technology
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