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Anonymous users2024-02-07It's saturated and the competition is fierce!
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Anonymous users2024-02-06Light-emitting diodes are referred to as LEDs and have the following characteristics:
1. Safety voltage.
LED uses a low-voltage power supply, and the power supply voltage is between DC 3-24V, which is a safer power supply than using a high-voltage power supply, especially suitable for public places.
2. Energy-saving model.
The energy consumption is about 80% less than that of incandescent lamps with the same light efficiency, and about 40% less than that of energy-saving lamps.
3. The applicability is strong.
It is small in size, can be prepared into a variety of shapes, and is suitable for volatile environments.
4. Fast response time.
Its incandescent lamps have a response time in the millisecond range, and LED lamps have a response time in the nanosecond range.
5. There are many colors.
Light-emitting diodes have red, yellow, green, blue, and orange multi-color light emitting. The working voltage of the red fluorescent tube is small, and the working voltage of the red, orange, yellow, green, and blue LEDs of different colors increases sequentially.
6. **Low.
LED is becoming more and more popular, and due to the power-saving characteristics of LED, the places used will gradually increase.
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Anonymous users2024-02-05A light emitting diode (LED) is a special type of diode. A normal semiconductor diode can only emit light when pressurized in the forward and reverse directions, while a light-emitting diode (LED) is a diode that converts electrical energy into light energy. Unlike ordinary diodes, light-emitting diodes introduce a semiconductor material inside, which converts electrical energy into light energy when a voltage is applied through the two extremes of the LED, resulting in the luminous effect of visible light.
The structure of the light-emitting diode is similar to that of ordinary Wu Pei's diode, which is also composed of p-type and n-type semiconductor materials, but it also adds a layer of cavity or enabler-only layer between the p-type and n-type materials. In LEDs, when two semiconductor materials, p-type and n-type, are combined, electrons move from the n-type material region to the p-type material region, and when the electrons recombine with the holes, energy is released to produce photons. Different materials and manufacturing processes can make the color of the light emitted by LEDs different, such as red, green, blue, etc.
Light-emitting diodes have the advantages of fast start-up, long life, low power consumption, small size and environmental protection, so they have been widely used, such as indoor and outdoor lighting, electronic displays, indicator lights, displays and other fields.
<> "Wait and jujube to eliminate blindness and wait for the bridge to be demolished."
22 in parallel.
It is 420mA, and if you don't do enough power, you have to do about 350mA, and if you add the output of the voltage regulator, it is only 100mA, which means the rated voltage of this LED. >>>More
2. We now open the software, and we can see that there is a set of software settings in the top row of menus. >>>More
The three primary colors are red, green, and blue.
In the case of light-emitting diodes, the material determines the radiation wavelength of fluorescence, and gallium arsenide (red), gallium phosphide (green), and gallium nitride (blue) are commonly used >>>More
The diode is forward conducted, and the current flows from the p-region to the n-region, which is equivalent to the electron flowing from the n-region to the p-region. The energy levels of electrons in the two regions of the pn junction are different, and the energy level in the n region is higher than that in the p region. Therefore, the process of current flowing from the p-region to the n-region when the diode is turned on is the process of continuously flowing electrons from the n-region to the p-region. >>>More