Infrared light uses–The data of Infrared light emitting diode 

Many kinds of the light emitting element in markey,
according to the spectrum can be divided into a light emitting element and a visible light to infrared light emitting element In the practice, introduces to the infrared ray emitting element, gallium arsenide(GaAs) is based on the infrared emitting two Polar tube (also known as infrared emitting diode) as the main body,  to describes the basic characteristics and application circuit of ir led.(a), basic characteristics
1 current voltage characteristics
The circuit symbol and the electrical characteristic curve of infrared light emitting diode , as shown in figure

1. Anode (P pole) Power Positive empty into the Positive voltage, the cathode (N-pole) applying a negative voltage,.  at this time and voltage diode forward voltage, but also produce Forward current, diode emits
beam energy emitting infrared provides, the lightconditions and general hair Light emitting diode (LED), but the infrared is not visible.in general Body voltge of Gallium arsenide infrared emitting diode is about to be 1V, and voltage of red luminescence gallium quality diode is 1.8V;  voltage of green luminescence gallium quality diode is 2V. After empty into the voltage exceeds the basic voltage, current is rising rapidly, The starting voltage influence of diode is also great by the surrounding temperature, when the temperature is higher, will make the cut in voltage value decrease, on the contrary,The starting voltage is reduced.—Infrared light emitting diode working in reverse voltage, only a small leakage current, but the reverse voltage exceeds the collapse When the voltage collapse, will immediately generate a lot of current, will make the element burnout, general infrared diode reverse voltage Value is about 3~6V,  when in use, try to avoid this happening.

infrared light uses–Data of Infrared light emitting diode1