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Principle of high-voltage self-defense electric baton circuit: BG1, BG2, and B1 form an AC/DC converter. After B1 is boosted, it charges C2 through QL bridge rectification. BG3 and BG4 form a multivi...[Details]
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Today, many portable electronic products require the characteristics of backlight LED drivers and how to achieve these characteristics. Finally, a typical circuit with each characteristic will be...[Details]
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The rapid development of LED lighting commercialization is expected to increase the market demand for white LED phosphors. With the continuous investment in phosphor research and development, ...[Details]
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OFweek Cup 2022 China
Robot
Industry Annual Awards (abbreviated as OFweek Robot Awards 2022) is jointly organized by OFweek, China's high-tech industry portal, and its authoritative robo...[Details]
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Preface You are developing with this 16-bit microcontroller. You are very confident in your program and have never had any bugs (you are a god). You have just allocated a large global buffer and all ...[Details]
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introduction
With the continuous development of liquid crystal displays, higher requirements are put forward for display contrast. Using vertically arranged liquid crystal displays, namely VA ...[Details]
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Yuan Zhiliang's team at the Beijing Institute of Quantum Information Science pioneered a new open architecture for quantum key distribution, using optical frequency comb technology to successfully ac...[Details]
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1 Introduction Switching power supplies dominate the power supply field due to their high efficiency and high power density. However, traditional switching power supplies have a fatal weakness:...[Details]
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China Energy Storage Network:
Researchers at Hiroshima University in Japan have mixed various polymers and molecular semiconductors as light absorbers to create a solar cell with higher energ...[Details]
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//In the original state, P1.6 is on and P1.0 is dark. Use the state machine to detect the key press. When the key is pressed for a short time and released, P1.0 flips and P1.6 flips
//Long press P1.0...[Details]
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On March 31, 2021, Tianshu Zhixin released the first general-purpose GPU in China, the Tiangai 100 chip and Tiangai 100 accelerator card, achieving a breakthrough from 0 to 1 in general-purpose GPU i...[Details]
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Powerful KE1Zx 5V MCUs bring capacitive touch sensing technology within reach
In today’s smart, connected world, touchscreens are used everywhere. It’s hard to imagine ...[Details]
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Diodes are also called crystal diodes, or diodes for short. In addition, there are early vacuum electron diodes; they are electronic devices with unidirectional current conduction. There is a PN junc...[Details]
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1 Different acquisition modes Assume that the storage depth is 1M, the sampling rate is 1G/s, and the single acquisition time of the oscilloscope (the total time of the horizontal axis on the oscillo...[Details]
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Last time, I finished reading the boot assembly and prepared the C operating environment. Now I will start to learn the C source code and jump from the start.S file to the file
lib_arm/board.c ...[Details]