The Light Emitting Diode LED For Short.By Gallium (Ga) And Arsenic (As), Phosphorus (P) And Nitrogen (N), Indium (In) Compounds Made Of Diode, When Electrons And Holes Composite Can Radiate Light, Thus It Can Be Used To Make Leds.In The Circuit And Equipment As Light, Or Of Text Or Figures.Phosphorus Gallium Arsenide Diode Red Glow, Gallium Phosphide Diode Hair Green Light, Yellow Light, Silicon Carbide Diode Indium Gallium N Diode Hair Blue Light.
50 Years Ago People Have To Understand Semiconductor Materials Can Produce Light Of The Basic Knowledge, The First Commercial Diodes In 1960.Leds Are English Light Emitting Diode (Light Emitting Diode).
It Is A Kind Of Semiconductor Diode, Can Convert Electrical Energy To Light Energy.Light-Emitting Diodes (Leds) With Normal Diode Consists Of A PN Junction, Also Has Unidirectional Conductivity.When Adding Forward Voltage To Light Emitting Diode, From P Area Into N The Holes And By N Area Into P Area Electronic, Near The P-N Junction Several Micrometers Respectively With The Hole Recombination Of Electrons And P N Area Area, Produce The Spontaneous Emission Fluorescence.Different Of Electrons And Holes In Semiconductor Materials Of Different Energy States.When The Electrons And Holes Of Composite Release How Much Energy Is Different, The More Energy Release, The Shorter The Wavelength Of Light.Commonly Used Are Red, Green Or Yellow Light Diode.
Light Emitting Diode Reverse Breakdown Voltage Of 5 V.Positive Volt-Ampere
Characteristic Curve Is Very Steep, It Must Be Series Current Limiting
Resistor To Control The Current Flowing Through The Pipes.Current Limiting
Resistor R Calculate The Type: R = (E - UF)/IF
E For The Power
Supply Voltage Type, UF Positive Pressure Drop For The LED, IF For The
General Working Current Of The LED.
ITS Basic Structure Is An Electroluminescent Semiconductor Materials, Placed On A Wire Rack, Then Sealed With Epoxy Resin Around, Protect The Internal Core, So The LED Of The Seismic Performance Is Good.Light-Emitting Diodes (Leds) Core Part Is Composed Of P-Type And N-Type Semiconductor Semiconductor Chips, Between The P-Type And N-Type Semiconductor Semiconductor Has A Transition Layer, Called The PN Junction.In Some Of The Semiconductor PN Junction, The Minority Carrier Injection With Majority Carrier Compound Will Release Excess Energy In The Form Of Light, So As To Directly Convert The Electric Energy To Light Energy.PN Junction To Add Reverse Voltage, Minority Carrier Injection, So The Light.Principle Of The Use Of Injection Electroluminescent Diode Called Light-Emitting Diodes (Leds), Known As The LED.(That Is, When It Is In A State Of Positive Work Plus Forward Voltage) On Both Ends, When The Current Is Flowing From The LED Anode To Cathode, Semiconductor Crystal Gives Different Colors Of Light From Ultraviolet To Infrared, The Strength Of The Light Associated With Current.