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Ultrasonic ranging - the transmitter circuit schematic is as follows: The oscilloscope waveform is as follows: The green waveform is the 40KHz square wave generated by the microcontroller The...[Details]
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He Yadong, spokesperson of the Ministry of Commerce, said on the 21st that the semiconductor industry is highly globalized. After decades of development, it has formed an industrial structure in whic...[Details]
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LED aluminum substrate
Features, structure and function
led的散热问题是LED厂家最头痛的问题,不过可以采用铝基板,因为铝的导热係数高,散热好,可以有效的将内部热量导出。铝基板是一种独特的金属基覆铜板,具有良好的导热性、电气绝缘性能和机械加工性能。设计时也要儘量将PCB靠近铝底座,从而减少灌封胶...[Details]
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Recently, the Xiaomi Mi 10 Ultra Commemorative Edition was officially launched, but soon after it was launched, the Xiaomi Mi 10 Ultra Commemorative Edition in Xiaomi's JD.com self-operated store rec...[Details]
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Today, no one should deny that electric vehicles will be the future trend of the automotive industry. Faced with the huge charging pile market, the swarm of companies is overwhelming. Charging pile...[Details]
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Engineers at Stanford University and Georgia Institute of Technology have created a small, autonomous device with a stretchable, flexible sensor that attaches to the skin and measures changes in the ...[Details]
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As people's living standards continue to improve, their demand for vehicle comfort is also increasing. Against this background, electric windows have basically become standard equipment for vehicle...[Details]
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Abstract: This paper introduces a video mode converter designed with AL128 chip as the core to convert non-standard video display modes into standard TV video formats. The working principle, har...[Details]
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On June 11, MarketWatch reported that Broadcom has signed a two-year supplier agreement with Apple, and is expected to seize the market share of RF component suppliers such as Qorvo and become Apple'...[Details]
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In the process of designing electronic circuits, engineers inevitably need to use a multimeter to measure some measuring instruments. Engineers all know that a multimeter can measure DC current, AC vo...[Details]
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Apple announced that its chief designer Jony Ive will resign within the year. Ive has worked at Apple for more than 20 years and is regarded as one of the company's leading figures. He is responsible...[Details]
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1. Installation software cracking problem: There are two programming environments for stm8: STVD and IAR for STM8; STVD is officially released by ST, and many materials show that STVD is better than ...[Details]
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From October 28 to 31, the 17th China International Public Security Expo (CPSE 2019), the world's largest security exhibition, was held in Shenzhen. SmartSens, a leading CMOS image sensor supplier, m...[Details]
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The circuit diagram of the development board matrix button module is as follows: The circuit diagram of the digital tube module of the development board is as follows: Matrix key scanning princip...[Details]
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Introduction μC/OS-II is a priority-based preemptive kernel with strong real-time performance, but it does not distinguish between user space and system space, which makes the system security worse. ...[Details]