单支红色发光二极管表示电源已接通。
这些发光二极管可以模拟红光。
发光二极管发出了光，这种光被植物感知为红光。
基于蓝宝石的氮化镓发光二极管的一般内量子效率约为70%。
A gallium nitride LED on sapphire has a typical internal quantum efficiency of around 70%.
但是，与阳光不同的是，这些发光二极管发出的光不支持光合作用。
But, unlike sunlight, the light from these LEDs did not support photosynthesis.
不断变化的建筑规范、人们逐渐发展的品味，以及维护这些精美的旧标志牌的高昂成本，让企业欣然接受了发光二极管。它们节约能源，但成本仍然很高。
Changing building codes, evolving tastes, and the high cost of maintaining those wonderful old signs have businesses embracing LEDs, which are energy efficient but still carry great cost.
续流二极管的反向恢复特性也得到了明显改善。
The reverse recovery properties of the freewheel diode are also distinctly improved.
所有照明均使用节能发光二极管。
电感，开关和二极管的另一种安排。
输出是通过面板上的发光二极管实现的。
二极管是将交流电整流成直流电的电子装置。
Diodes are electronic devices which rectify alternating current to direct current.
半导体激光器和发光二极管
二极管是一种只允许电流单向流动的元件。
A diode is a device which only allows current to flow in one direction.
事实上，整个网络变成了一个巨大的光敏二极管。
Tononi said. In effect, the network becomes one giant photodiode.
事实上，整个网络变成了一个巨大的光敏二极管。
目前市面上多数的白色发光二极管都是基于氮化镓的.
Most of the white LEDs now on the market are based on gallium nitride.
他认为，二极管灯不仅仅会取代白炽灯，它将改变世界。
The LED light is going to do more than just replace the incandescent, he says. "It's going to change the world."
该反应也可以用于制造杀菌剂、防晒霜和有机发光二极管。
The reactions are also used to produce compounds used in fungicides, sunscreen and organic light-emitting diodes.
前面板显示器显示设置点以及提供给激光二极管的实际电流。
The front panel display monitors both the set points and the actual current delivered to the diode.
有机发光二极管(OLED)电视机据称有着最薄的电视屏幕。
欧兹坎用LED(发光二极管)作为光源，以此制造细胞的阴影。
Ozcan USES an LED as his light source, creating cellular shadows.
光二极管单独的射频带宽分别为10、15、20或40GHz。
The individual RF bandwidth of the photodiodes is 10, 15, 20, or 40 GHz.
Sourcing数字输出通过三极管控制连接线上的高低电平。
The digital output controls the line by using a transistor to leave the line at 0 V or to raise the line to +V.
今天我们将教你如何使用红外线发光二极管作为通信设备为您的项目。
Today we'll teach you how to use IR LEDs as communication devices for your projects.
由于两个二极管反向并联，所以此电路能够对任何极性的信号进行保护。
With two diodes in parallel back to back, the circuit will provide protection regardless of the signal polarity.
新技术采用有机光发射二极管（OLED）薄膜在电流的响应下产生光辐射。
The new technology employs organic light emitting diodes, or OLEDs, tiny thin films that create light in response to electrical current.
如今首批设计的民用电网电压的能直接替代白炽灯泡的发光二极管已陆续上市.
Now the first mains-voltage LEDs designed as direct replacements for incandescent bulbs are arriving on the market.
他声称，二极管灯能少用80%的能量，而且使用时间是现在照明技术的20倍。
"We can use as much as 80 percent less energy," he says, "and the product can last about 20 times longer than the technology it's replacing."
即使是在目前的早期阶段，他认为硅基的氮化镓发光二极管就已经具有商业意义了。
Yet even at this early stage he thinks gallium nitride-on silicon LEDs would make commercial sense.
即使是在目前的早期阶段，他认为硅基的氮化镓发光二极管就已经具有商业意义了。
Yet even at this early stage he thinks gallium nitride-on silicon LEDs would make commercial sense.
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