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In practical applications, a series parallel LED array is often used to overcome or reduce the open circuit or short circuit phenomenon of individual LEDs, so that the entire row of LEDs does not light up or affect the entire circuit and power supply. The so-called series parallel connection of infrared receiving LED receiving tubes is to use a small number of LEDs in series, then connect them in series with a ballast resistor to form a branch, and then connect multiple branches in parallel to form a "branch group".

??Infrared receiving LEDYou can also choose the form of series connection, which is based on the formation of "branch groups", and then connect multiple "branch groups" in series to form the entire circuit of the infrared lamp board. This connection method not only reduces the impact range of LED faults, but also lowers the ballast resistance to zero. There are multiple high-power resistors among dozens of low-power resistors. Resistive heat dissipation, well-designed, and more compact infrared light board.

In the past, infrared receiving LEDs were rarely used in television monitoring system projects. With the increasing number of social crimes, infrared lamps have played an increasingly important role in night surveillance in recent years, not only in warehouses, oil depots, armories, libraries, cultural relics, and prisons; Other important departments also adopt and use it in routine monitoring systems. Infrared cameras are even used for television surveillance programs in residential areas. This indicates that people's requirements for television monitoring system engineering are becoming increasingly standardized and high. More and more important places require 24-hour uninterrupted monitoring.

Infrared receiving LED, also known as infrared emitting diode, should be kept clean and intact during use. Infrared receiving LED product parameters: emission distance, emission angle (15 degrees, 30 degrees, 45 degrees, 60 degrees, 90 degrees, 120 degrees, 180 degrees), emission light intensity, wavelength. The above determines the main performance and application scope of infrared emission tube products. The application of infrared emission tubes is mainly as the emission source of infrared control systems, which emits signals after frequency modulation.

The receiving distance can exceed 10 meters, and when there is no interference, it can exceed 30 meters. Infrared receiving LEDs are widely used in various long-distance and short distance infrared night vision surveillance cameras. The product is packaged with large-sized chips from well-known factories and undergoes strict processing and shielding. Therefore, the infrared lamp installed by the factory has the characteristics of high performance, high resolution, and low heat generation The material is GaAlAs, which has advantages such as long monitoring distance.