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Infrared remote controls have been widely used in television, sound, and various household appliances. A remote control can be used to remotely control electrical appliances within 6-8 meters of an ordinary station, making it very convenient to use. Due to the large usage of infrared remote control methods, their infrared emission and reception circuits have complete supporting devices, which are low in price and simple in circuit. Electronic enthusiasts can apply these devices to assemble various useful remote controls. So, theseInfrared LED BeadsWhat are the characteristics?

Characteristics of Infrared LED Beads

Common infrared light-emitting diodes are divided into three categories based on power: low power (1mW~10mW), medium power (20mW~50mW), and high power (50mW~100mW or above). Different power infrared light-emitting diodes should be equipped with corresponding power driving tubes. To generate modulated light, simply apply a pulse voltage of a certain frequency to the driving tube.

Controlled installation is controlled by infrared light-emitting diodes, which have corresponding infrared photoelectric conversion components, such as infrared receiving diodes, photoelectric transistors, etc.

The emission and reception of infrared radiation are divided into direct and reflective types. Direct beam type refers to the placement of the light emitting tube and the receiving tube at opposite ends of the emitting and controlled object, with a certain distance between them; Reflective type refers to the light emitting tube and the receiving tube being placed side by side. Normally, the receiving tube has no light and only operates when the infrared light emitted by the light emitting tube encounters the reflector and the receiving tube receives the reflected infrared light.

Based on the characteristics of infrared LED beads, different wavelengths are used for more general applications:

1. Wavelength: 808nm, suitable for the pump light source of medical equipment, space Optical communication, infrared lighting lamps and solid-state lasers;

2. Wavelength: 830nm, suitable for fully automatic card swiping systems on highways;

3. Wavelength: 840nm, suitable for surveillance cameras, color zoom infrared waterproof;

4. Wavelength: 850nm, suitable for surveillance cameras, digital photography, monitors, building walkie talkies, anti-theft alarms, infrared waterproofing;

5. Wavelength: 870nm, suitable for monitoring cameras in large shopping malls and intersections;

6. Wavelength: 940nm, suitable for controllers, such as controllers for household appliances