The photodiode is a semiconductor device composed of a PN junction. The depletion layer of the PN junction is only a few microns, and most of the irradiated light is absorbed by the neutral region, so the photoelectric conversion efficiency is low and the response speed is slow. In order to improve the characteristics of the device, a layer of intrinsic semiconductor (called |) is arranged in the middle of the PN junction. This structure is a commonly used PIN photodiode. PIN photodiode improv
According to different photoelectric switch manufacturers, the classification of various photoelectric switches adopts different standards and classification methods, representing different attribute categories. Some of the classification methods between them are cross, and the photoelectric switch will not pass the classification method at the time of purchase. Simplify, integrate and use multiple levels of corresponding options. 1. Classification by detection method One is the light quanti
The LED linear lamp series is a high-end decorative lamp, which is characterized by low power consumption, long life, high brightness, exquisite appearance, environmental protection and energy saving, and maintenance-free. It is especially suitable for indoor and outdoor entertainment venues, bridges, rivers, building outlines, and the lighting decoration of billboards. The lamp shell is made of aluminum alloy, with bright lines, simple structure, beautiful a
LED linear lamp light-emitting diodes are made of III-IV compounds, such as GaAs (gallium arsenide), GaP (gallium phosphide), GaAsP (gallium arsenide phosphorous) and other semiconductors, and its core is a PN junction. Therefore, it has the I-N characteristics of a general P-N junction, that is, forward conduction, reverse cutoff, and breakdown characteristics. In addition, under certain conditions, it also has light-emitting properties. Under the forward voltage, electrons a
China's LED industry started in the 1970s. After more than 30 years of development, China’s LED industry has initially formed a relatively complete industrial chain including the production of LED epitaxial wafers, the preparation of LED chips, the packaging of LED chips, and the application of LED products. LED companies in China are developing relatively fast Many, such as NVC lighting, rectangular lighting (300301, shares it). Driven by the "National Semiconductor Lighting Project&qu
According to the analysis of the high-pole lamp manufacturers, the high-pole lamp generally refers to a new type of lighting equipment composed of a steel cone-shaped lamp pole above 15 meters and a high-power combined lamp holder. The utility model is composed of a lamp cap, an inner lamp, a pole body and a base part. The shape of the lamp holder can be determined in detail according to user requirements, surrounding environment and lighting requirements. The internal lamps are mostly composed
Many friends who don't know much about LED lamp holders think that the LED lamp holders all over the world are the same. In fact, this is wrong. There are many types of LED lamp holders. Therefore, if you want to choose the most suitable product without making a mistake when purchasing, you need to understand its various categories in detail. Let's take a look at the following introduction.The installation method is divided into bayonet, screw and other methods, and the material is divid
Lithium battery solar street light is currently the mainstream solar street light product on the market, and the market demand is still very large. For users who want to purchase, price is a key point of their concern, then, is the price of lithium battery solar street lights expensive? This actually needs to be analyzed based on the following points. First. Look at the solar panels of lithium battery solar street lights: the price of solar panels seems to be relatively low in the past six
1. System additional voltageIt is also the extra voltage of the battery. The voltage of a single solar cell is generally 0.4~0.7V. The common solar cell module is 36/54/60/72/96 in series, and the voltage is 18/27/30/36. /48 volts or so. 2, local sunshine radiationThis can be inquired directly on the Internet, select the monthly average radiation amount of the best viewpoint, and the minimum average value of three months is required. At the time of installation, you must also pay attention to t
Integrated street lamp is one of the street lamp products, and it is also a relatively new type of product. Compared with ordinary street lamps, it has a higher degree of integration. So, how does the integrated street light work? We can take a look at the detailed introduction below. The integrated street lamp is converted into electric energy by solar panels, and then the lithium battery in the integrated solar street lamp is charged. In the daytime, even in cloudy days, this solar generator
Spotlights are believed to be used in many homes. In order to have better light sources, large spotlights have also begun to be used in home decoration. So what are the differences between spotlights and downlights?1. Opening for chandelierThere are many differences between spotlights and downlights in the aperture size. The openings of common downlights are generally 2 inches, 2.5 inches, and 3 inches. The deeper the size, the greater the depth of the ceiling. The full stretch height of the dow
Downlights generally have a screw base, which can be directly mounted on incandescent or energy-saving lamps. Downlight is a type of lighting fixture that is embedded in the ceiling and emits light. Its biggest feature is that it can maintain the overall unity and perfection of architectural decoration, and will not destroy the perfect unity of ceiling art because of the setting of lamps. This kind of concealed lamps embedded in the ceiling, all light is projected downward, which belongs to dire