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The primary side regulation controller (PSR) can accurately control the CV/CC of the charger output at the primary side without the need for a feedback circuit at the secondary side, achieving powe...[Details]
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On March 23, Gree Electric Appliances disclosed the appearance design patent of its "smart watch", with the publication number CN306400245S. The patent abstract shows that the purpose of this...[Details]
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introduction
Due to the rapid development of microelectronics technology, digital electronic systems composed of IC chips are developing rapidly in the direction of large scale, small size and...[Details]
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Hardness is a performance index to measure the hardness of a material. There are many methods for hardness testing, and the principles are different. The measured hardness values and meanings are no...[Details]
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Seeing that many novices do not understand how to use AVR microcontroller bit variables, here is an I/O port bit operation method for everyone to learn: Here is the macro definition I use: #define LE...[Details]
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According to news on February 20, the US Biden administration announced that it would provide US$1.5 billion (currently approximately 10.8 billion yuan) to the semiconductor company GlobalFoundries u...[Details]
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The Internet of Things (IoT) is growing rapidly and developing around innovations in user experience, which poses challenges to designers in terms of energy efficiency, size, cost, and cross-domain e...[Details]
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Power ripple test is a very important parameter in power quality testing, but how to accurately measure power ripple has become a difficult problem in the minds of engineers. How can we solve this p...[Details]
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At the recently held 21st China (Guangzhou) International Building Decoration Expo (referred to as "China Construction Expo"), NXP Semiconductors and Shenzhen Romance Smart Home Co., Ltd. jointly dem...[Details]
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About Microsoft, we know that they develop and license consumer and business software. It is best known for its Windows operating system and Office productivity suite. But in fact, the company is d...[Details]
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Note: Data operations may exceed the type of variable definition, so be careful when defining variables! Variable type definition in STM32F4: in stdint /* exact-width signed integer types */ ...[Details]
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ARM's convention byte 8bits halfword 16bits word 32bits Instruction set provided by ARM Core ARM instruction set 32 bits Thumb instruction set 16 bits Thumb2 instruction set 16&32 bits Seven ...[Details]
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Four speed regulation methods of motor
The four common speed regulation methods of motors are as follows:
Variable frequency speed regulation: The speed of the motor is changed by changin...[Details]
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On May 14, Xiaomi’s official Weibo account announced that Xiaomi won the “Derwent Top 100 Global Innovation Companies 2018-2019” and posted photos of the award ceremony. Xiaomi's official We...[Details]
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The circuit monitors a bipolar power supply with user-defined positive and negative reset thresholds. When either voltage drops below (usually toward 0V) the corresponding threshold, the circuit ge...[Details]
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