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文介紹一種省電和具成本效益的LED亮度控制方法，提供每個LED一個脈衝寬度調變(PWM)控制器，再利用該控制器把輸入電壓轉換為LED電流，是控制多個LED輸出亮度的傳統做法。這類應用多半採用電壓控制型PWM控制器，並為LED串聯一個電流感測電阻，以回授電壓給控制器。這類控制器基本上是在電壓模式操作，會把電流感測電阻的電壓維持在定值，進而使電流穩定不變。
常見的應用是利用多個不同顏色...[Details]
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TI's MSP430 series microcontrollers are products with high practical value and are widely used in many fields. In particular, their ultra-low power consumption is unmatched by any other microcontro...[Details]
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Initiate R&D work to transform data center architectures through memory expansion and pooling solutions to enable disaggregated and composable server architectur...[Details]
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The digital TV set-top box consists of a high-frequency head, a QAM demodulator, a TS stream demultiplexer, an MPEG-2 decoder, a PAUNTSC video encoder, an embedded CPU system and peripheral interface...[Details]
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The recent news that Google researchers have reportedly achieved the so-called "quantum supremacy" technology after unremitting efforts has caused great excitement because the technology has been hot...[Details]
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Handheld vacuum cleaners are becoming more and more popular in the market due to their advantages such as easy mobility, strong suction, convenient charging, fashionable appearance and powerful fun...[Details]
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With the rapid development of the communication industry, people's requirements for various wireless communication tools are getting higher and higher. Low power radiation, long ran...[Details]
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TSMC has reallocated its production capacity in response to demand for automotive chips and has notified panel driver IC customers to reduce supply. Industry insiders estimate that the impact of capa...[Details]
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An was paralyzed by a stroke, and she used a brain-computer interface to convert brain signals into the language and movements of a virtual character. Image source: Nature website
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On July 20, BYD stated in a conversation with investors that the blade battery equipped in its flagship model "Han" can be charged in 10 minutes and has a range of over 100km. According to informat...[Details]
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Recently, official documents from the state of Texas showed that Samsung Electronics is considering Austin as the site for the company's new $17 billion wafer factory. Samsung said the new factory wi...[Details]
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Abstract: PWM pulse width signal modulation is a kind of pulse signal widely used in modern electronics industry, and its typical application is steering gear control. Based on Proteus and Keil sof...[Details]
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According to the textbook, I learned the procedure for detecting key presses yesterday. It is also clear that the procedure I learned yesterday is not worthy of being worthy of being taught, because ...[Details]
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Under the background of "new infrastructure", what new changes and trends will there be in the power supply and power consumption in the power supply area of the Southern Power Grid? Recently, th...[Details]
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Up to now, more than 180 models have been tested based on the CC-1000T intelligent cockpit evaluation system of Cheyun Research, of which more than 79% have the ability to upgrade via OTA, and more...[Details]
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