There are two types of optical couplers: one is a nonlinear optical coupler and the other is a linear optocoupler.1. Linear optocouplers are commonly used in switching power supplies. The main differe...
1. Working principles of photosensitive sensorsPhotosensitive sensors are sensors that use light-sensitive elements (photodiodes) to convert light signals into electrical signals. They are sensitive t...
1. The principle of the infrared thermopile sensorAs long as any object is above absolute zero, it will radiate energy at a certain wavelength, but the radiation energy in the low temperature section ...
1. Infrared sensors in elevator systemAn elevator is a vertical lift powered by an electric motor, equipped with a box-like pod, used to carry people or carry goods in multi-storey buildings. With the...
Ⅰ. Fresnel lens for scientific research systemFresnel lenses are often used in scientific research systems, and the angle between the lens and the horizontal plane is 45±5. If two rays of different ...
Nowadays, photosensitive sensor has been widely used in the production and life of human beings, especially for high-precision products. It is necessary to use various sensors to monitor and control v...
Light dependent resistance is a kind of resistor made by the photoconductive effect of semiconductor, whose resistance value changes with the intensity of incident light. It is also called a photocond...
The Fresnel lens is a branch of the lens. Compared with other lenses, it has the advantages of small size, light weight, compact structure, good condensing and imaging performance, not inferior to oth...
The elevator is a kind of vertical elevator powered by a motor, equipped with a box-shaped pod, used for multi-storey buildings to take people or carry goods. With the occurrence of multiple elevator ...
An infrared body temperature sensor is a small category of many sensors. And this epidemic also made people once again realize the importance of sensors. Sensing technology is the foundation of the In...
All objects with a temperature higher than absolute zero are constantly emitting infrared energy to the surrounding space, and their radiation characteristics, radiation energy size, wavelength distri...
Forehead thermometers, which are most in short supply on the market, are the main bottleneck in the industry due to the tight supply of thermopile infrared body temperature sensors.The thermopile infr...
Pyroelectric infrared sensor is a kind of sensor with great potential for application. It can detect infrared rays emitted by people or certain animals and convert them into electrical signal output. ...
If the room gets dark, and the light bulb automatically turns on and eliminates the darkness, Isn't that cool? And you can even use it as an emergency lighting system.Ⅰ. How to use the LDR photor...
1. The photocurrent of the photoresistorThe current flowing through the resistance of the photoresistor in the dark is called the dark current, and the current flowing in the resistor when it is brigh...
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