1. Features of photoresistor type: The internal photoelectric effect has nothing to do with the electrode (the photodiode is related), that is, DC power can be used; the sensitivity is related to the semiconductor material and the wavelength of the incident light; it exists in the form of a photoresistor, and the resistance of the resistor is very high when no light is received. When there is light stimulation, the resistance value decreases with the change of light intensity; epoxy resin enca
What tests do qualified direct-plug LED lamp beads need to go through? Now, let’s take a closer look with the editor of the infrared pair tube manufacturer. 1. Optical and electrical performance test; forward voltage drop, reverse current; luminous flux, spectrum, color temperature, CRI and luminous angle. 2. Lens: Identify the type of encapsulation glue and detect whether there are contaminants and bubbles. 3, phosphor coating; phosphor particle size, particle size distribution, composition
(1) Night vision When the visibility is low and the light is insufficient, infrared rays are used for night vision equipment. When the night vision device is working, it will actively illuminate the target and then use the target to reflect the infrared light of the infrared source to implement the night vision technology of observation. This corresponding device is a night vision device. (2) Thermal imaging uses the infrared radiation emitted by the infrared emission tube to reach the tar
PN junction photodiodes, like other types of photodetectors, are widely used in photoresistors, photosensitive coupling elements, photomultiplier tubes and other equipment. They can output corresponding analog electrical signals (such as measuring instruments) or switch between different states of digital circuits (such as control switches, digital signal processing) according to the illuminance of the received light. Photodiodes are also used in consumer electronics products, such as CD playe
In this case, the infrared lamp related parts may be damaged, or the photoresistor may be faulty. Infrared surveillance cameras are divided into ordinary infrared cameras and dot matrix infrared cameras. Dot matrix thermal imaging cameras are better than ordinary thermal imaging cameras, with longer irradiation distance, fine and clear picture quality, and longer service life than ordinary thermal imaging cameras. The working principle of the infrared camera is that the infrared light emitt
At present, the application of photoresistors in contemporary applications can be said to be more and more extensive. The characteristics of photoresistors The application of photoresistors is worthy of our study. Now we have a deep understanding of the characteristics of photoresistors and the applications of photoresistors. . Application of photoresistor. Photoresistors are photoelectric elements made of semiconductor materials that work with internal photoelectric effect. Its resistance val
With the continuous progress of people's lives, the use of infrared has also entered people's lives, and the fields of application are also broader. Here are some infrared cameras, audio output devices and other infrared reference products in the fields of infrared emission tubes. And according to the characteristics of different infrared emitting tube chips, the applicable fields are wider according to different wavelengths. Infrared emission tube product wavelength: 940nm, suitable f
The photoelectric switch is generally composed of three parts: transmitter, receiver and detection circuit. The transmitter aims at the target and emits a beam of light. The emitted light beam is usually composed of semiconductor light sources, light emitting diodes (LED), laser diodes and infrared light emitting diodes. Continuously emit the beam or change the pulse width. The receiver is composed of photodiodes, phototransistors and phototubes. In front of the receiver, optical components suc
For integrated street lights, many customers will have a worry about whether they can be used normally in rainy and cloudy days. After all, the solar energy intensity is obviously not enough in cloudy and rainy days, and it is precisely at this time that high-quality lighting is most needed. Below, professional manufacturers will give a detailed introduction to this problem, come and take a look.The integrated street light is mainly illuminated by the principle of solar energy. It is an environm
1. Energy saving: LED lamps of the same power consume only 10% of the power consumption of incandescent lamps, which is more energy-efficient than fluorescent lamps. 2. Long life: LED lamp beads can work for 50,000 hours, which is longer than fluorescent lamps and incandescent lamps. 3. Dimmable: The previous dimmers have always been aimed at incandescent lamps. When the incandescent lamp is dimmed, the light will turn red; it is difficult to see the fluorescent lamp dimming. Lighter, this
LED spotlights are mainly composed of housing, lamp beads, aluminum base plate, and drivers. The specific analysis is as follows: LED spotlight shell: baking varnish, electroplating two kinds of shells. The whole set includes lamp cover, lamp cup, base, aluminum substrate, lens, screw. Suitable for MR16, GU10 lotus shape, beautiful and generous. Good heat dissipation performance. LED spotlight lamp beads: six-pin RGB, dedicated for spotlights, red light: 40lm, green light: 60lm, blue
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