1. Introduction of infrared transmitting tube infrared transmitting tube (IRLED, InfraredLightEmittingDiode) is a kind of can launch infrared semiconductor devices, wavelength usually in & have spent 700nm to 1mm Between them, they are invisible to the human eye but can be detected by infrared receiving tubes (such as infrared receiving heads, photodiodes, etc.). Main features: Wavelength range: Common 850nm, 940nm (suitable for remote control and communication) Working voltage: usually 1.2V to 1.6V (slight differences among different models) Working current: General 20mA to 100mA

Infrared emitting diodes (IRleds) often encounter various problems in application. The following are the 10 most common problems and their solutions: 1. Possible reasons for the shortening or failure of the infrared remote control distance: aging or light attenuation of the emitting tube, insufficient driving current, mismatch of the transmitting Angle, and decrease in the sensitivity of the receiving head. Solutions: ✅  Check the driving current (make sure it is within the range of 20-100mA) ✅  Replace with a new IRLED of the same model (note wavelength matching, such as 850nm/940nm) ✅  Adjust the emission Angle (narrow Angle is suitable for long distance) ✅  Clean the receiving head or replace it. 2. Severe heating of the infrared emitter tube may be due to the working current exceeding the limit