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过去LED 业者为了获得充分的白光LED 光束,曾经开发大尺寸LED芯片 试图藉此方式达到预期目标。不过,实际上白光LED的施加电力持续超过1W以上时光束反而会下降,发光效率相对降低20～30%。换句话说,白光LED的亮度如果要比传统LED大数倍,消耗电力特性超越荧光灯的话,就必需克服下列四大课题：抑制温升、确保使用寿命、改善发光效率,以及发光特性均等化。
The solu...[Details]
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introduction
A typical traction elevator includes a traction machine, traction wire rope, guide wheel, anti-rope wheel, speed limiter, safety clamp, etc. Among them, the two ends of the tracti...[Details]
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I am using the Keil uVision5 version After writing the code, compile it first, and debug it only if there is no error After that, the following toolbar will pop up. The first reset is a reset, wh...[Details]
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A few days ago, screen tests of Samsung Galaxy S22+ and S22 Ultra were leaked. The results came from the company’s own development laboratory, and they are exactly the same as the various leaks seen ...[Details]
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The complex processing of carbon fiber requires extremely high-level professional technology. BMW's intelligent lightweight structure concept "Carbon core high-strength carbon fiber core" was first...[Details]
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The multimeters produced by the manufacturer have been strictly inspected and tested, and their various performances usually meet the corresponding technical index requirements. However, some necess...[Details]
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AMD President and CEO Lisa Su said there are currently no plans to license new technologies to Chinese joint ventures. As the U.S.-China trade war heats up, AMD has for the first time stated that its...[Details]
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According to official news from OmniVision, OmniVision Group announced the launch of touch and display driver integration (TDDI) products for smartphones at the 2022 Consumer Electronics Show....[Details]
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1. Introduction
With the rapid development of information technology, mobile terminal devices such as mobile phones, PDAs, and handheld computers are increasingly being used. In addition, the p...[Details]
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On August 27, State Grid Heilongjiang Electric Power Co., Ltd. and China Mobile Communications Group Heilongjiang Co., Ltd. held talks on in-depth cooperation on "multi-station integration". Adheri...[Details]
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Recently, Bloomberg New Energy Finance (BNEF), a world-renowned research institution, released the Energy Storage System Cost Survey 2023 (hereinafter referred to as the "Report"). In its energy st...[Details]
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In the era of new energy vehicles, battery technology has become a frequently mentioned topic, because it is gradually penetrating into our lives, but we don’t know enough about batteries. There ar...[Details]
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1. Rectification and filtering circuit
The task of the rectifier circuit is to use the unidirectional conductivity of the diode to convert the positive and negative alternating ...[Details]
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China is a country with frequent coal mine accidents. In order to further improve the safety protection capability and emergency rescue level of coal mines, and drawing on the successful experience...[Details]
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Shenzhen, China –
Haptic technology is no longer just a feature – it has become a key driver for companies in various industries to achieve product differentiation and enhance user experience
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DIY/Open Source Hardware
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