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This experiment will make a simple passive infrared anti-theft alarm. The alarm consists of infrared transmitter, receiver, buzzer and LED indicator. Under normal circumstances, the green LED flashes ...[Details]
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Recently, Xiamen Maritime Safety Administration, Xiamen Port Administration, and Xiamen Free Trade Commission jointly issued the "Guidelines for the Safe Maritime Transportation of Containerized Li...[Details]
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How to skillfully measure the internal resistance of a magnetoelectric microammeter
81C3, 81L3 50μA magnetoelectric microammeters are commonly used by amateur electronics enthus...[Details]
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1 Introduction The digital home is the basic unit of the future smart community system. The so-called "digital home" is based on the internal home network to provide intelligent services covering ...[Details]
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Recently, the "5th Hard Core Ecological Conference and 2023 Automotive Chip Technology Innovation and Application Forum" hosted by Master Xin was successfully held at the Shenzhen International Conve...[Details]
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At the China Automotive Blue Book Forum, Zeng Yuqun, chairman of CATL, announced the CTC battery technology. CTC is the abbreviation of Cell to Chassis, which has the same naming principle as CTP, an...[Details]
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On May 27, the unveiling ceremony of the joint R&D center between Hangzhou Dianzi University and Hangzhou Yucheng Electronic Technology Co., Ltd. was held. According to MicroParity, Hangzhou Dianzi...[Details]
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On April 25, the "2020 Qinhuai New Infrastructure, New Industry and Internet of Things Industry Ecosystem Cloud Recommendation Conference" was held. At the meeting, Qinhuai District officially releas...[Details]
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The mobile phone industry and broadcast network operators are increasingly willing to provide multimedia streaming video content services to mobile receiving terminals including laptops, mobile phone...[Details]
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The World Congress (WC) was held in Shanghai, China from July 6 to 8. The theme of the conference was "Intelligently Connecting the World and Creating the Future", which brought together experts an...[Details]
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1. Convert keys to numerical values
Put the button into a cluster, convert the cluster into an array, and use the array index to get the corresponding value of the button.
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The switching power supply has the advantages of small size, high efficiency, light weight, and low noise, and its application is becoming more and more extensive. When we design the battery charg...[Details]
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The 0~100 mV precision voltage source is an indispensable excitation signal source for the regular inspection of important control systems such as aircraft engine temperature control boxes. The des...[Details]
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In the latest FCC KDB publication 447498 D01 V03R01, the SAR test requirements for handheld mobile terminals with multiple antennas (multiple transmitters) are explained and defined in more detail. Mo...[Details]
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Watchdog timer, in the embedded field, some devices need to work in some extreme environments, that is, places where people rarely go or are difficult to go. In the long-term operation, it is inevi...[Details]
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