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On August 21, 2024, Xiangxi State Party Secretary Guo Zhenggui and his delegation visited Guzhang County Hongyuan Vanadium Industry Co., Ltd., a subsidiary of Haili Group, to investigate the constr...[Details]
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Foreign media reported that the U.S. Army recently signed three contracts with Maryland-based arms contractor Lockheed Martin to produce more Q-53 systems and equip the radar with enhanced capabiliti...[Details]
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1. The concept of priority in STM32 (Cortex-M3)
There are two priority concepts in STM32 (Cortex-M3): preemptive priority and response priority. The response priority is also called "sub-prior...[Details]
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The crystal oscillator in the microcontroller plays an important role in the entire internal circuit. The circuit can generate the clock frequency required by the microcontroller in conjunction with t...[Details]
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Recently, US President Trump said that US companies are allowed to continue selling products to Huawei. Influenced by this news, according to foreign media reports, Japanese operator IIJ will restart...[Details]
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Last month, Hisense officially released the color ink screen reading phone A5C and A5Pro. At present, Hisense color ink screen reading phone A5Pro has been officially launched and pre-sale has...[Details]
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The introduction of artificial intelligence is another new industry development trend in the security industry following networking and high definition, bringing new impetus to the technological deve...[Details]
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1. Working principle of SHZ-7 intelligent grinding sound measuring instrument The SHZ-7 intelligent grinding noise measuring instrument receives the noise from the mill through a probe of a special s...[Details]
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Figure 1 shows a circuit for measuring the collector current and emitter current of a crystal using a voltmeter. After measuring the voltages at both ends of rc and re with a voltmeter, according to ...[Details]
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According to an internal document obtained by MacRumors, Apple acknowledged that some displays of the iPhone 12 exhibited unusual light changes such as flickering, greenish or white glow under certai...[Details]
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China Energy Storage Network News:
On May 23, the Party Leadership Group of State Grid Corporation of China held a meeting to discuss the company's work on meeting the peak demand in summer...[Details]
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On the morning of March 11, the 200MW/400MWh grid-side energy storage project in Wuyi, Jinhua City, officially started construction. This is also the largest grid-side independent energy storage pr...[Details]
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On August 22, Unigroup Tongxin released the world's first security chip E450R with both open hardware and software architecture. The chip is used in the fields of data security and algorithm protec...[Details]
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New energy storage is an important equipment foundation and key supporting technology for building a new power system and promoting the green and low-carbon transformation of energy. It is an impor...[Details]
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What is a contactor?
They are electromechanical switches that, while similar to relays, perform heavy-duty applications that require higher current carrying capabilities. Contactors provide lo...[Details]