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On January 31, Walt Gas released an announcement on the expected increase in annual performance in 2020, stating that the company expects the net profit attributable to shareholders of listed compani...[Details]
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0 Preface The Internet of Things is an extension of Internet applications and an emerging networking technology. Its core is the information communication between objects and the interactive contro...[Details]
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There are many kinds of electronic measuring instruments, including multimeters, oscilloscopes, power meters, power quality analyzers, power analyzers, etc. We often find that the same signal is test...[Details]
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Digital anemometer tests include average wind speed test and turbulent component test (wind turbulence 1~150KHz, different from fluctuation). The methods for testing average wind speed include thermal...[Details]
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Just now, when I was looking at the 52 MCU and GPS communication program, I saw a function, absacc.h, which I had never encountered before. I searched on Baidu and combined my understanding to organiz...[Details]
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Most power factor correction (PFC) power stages operate in critical conduction mode (CrM), which controls the inductor current to ramp up from zero to a desired peak level and then back down to z...[Details]
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In accordance with the decisions and arrangements of the CPC Central Committee and the State Council, the National Development and Reform Commission recently issued a policy to reduce electricity c...[Details]
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The rapid development of electronic technology has made traditional in-vehicle products (such as in-vehicle DVD, in-vehicle amplifier system, etc.) face the trend of being eliminated, while in-vehi...[Details]
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The figure shows an AGC amplifier composed of SF357 op amps. It can be used in circuits that require constant output, such as recording computer programs onto cassette tapes and other automatic gain ...[Details]
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introduction Tunnels are an important part of highways, and tunnel lighting systems are an essential guarantee for vehicles to safely enter, pass, and leave tunnel areas. At present, the lighting of ...[Details]
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1. Delta connection and star connection
2. Star-delta 380V main circuit wiring
3. Different ways to connect network cable crystal connectors
4. Differen...[Details]
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Schematic mian function Press key 1 to continuously increase +1 LED displays binary on and off Because there are 8 LEDs in total, the highest binary value displayed is 1111 1111, which is 255. #...[Details]
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OFweek Cup · OFweek 2023 China
Robot
Industry Annual Selection (abbreviated as OFweek Robot Awards 2023) is jointly organized by OFweek, China's high-tech industry portal, and its authorita...[Details]
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The highly intelligent soil testing and formulating fertilizer meter helps agricultural production The highly intelligent soil testing and formulating fertilizer meter can quickly detect the actual ...[Details]
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"Compared with the month-on-month growth of 82.0% in March, the output of ternary batteries in April fell by 21.4% month-on-month, becoming the main reason for the decline in output in the entire bat...[Details]
PCB Design
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