LED (LIGHT EMITTING DIODE)

 

Light Emitting Diode ka baibain bolu LED mak komponente elektronika neebe mak hamosu  naroman monokromatiku bainhira hetan fontes de energia. LED hanesan familia husi Komponente  Dioda neebe mak produs husi sasan semikonduktor. Kores oioin neebe mak lakan husi  LED depende mos ba sasan semikondutor neebe mak tau hamutuk hodi bele produs LED nee rasik. LED mos bele halo transmisaun sinar inframerah neebe mak ita labele hare ho matan neebe mak baibain ita bele hetan ou hasoru iha Remote Control TV, Ac ( Air conditioner), no mos iha  Remote Control sasan elektronika sira seluk.

Simbolu no  figura husi LED (Light Emitting Diode)

 

 

Figura : simbolu no figura LED

Maneira serbisu husi LED (Light Emitting Diode)

Hanesan esplika tiha ona iha leten katak LED mai husi familia Komponente DIODA neebe mak produs husi sasan Semikonduktor, mak LED nia serbisu mos sei hanesan ho dioda neebe mak iha polu rua mak hanesan  polu positivu (P) no polu Negativu (N). LED sei lakan bainhira hetan fontes de energia nebe mak riversa ou dehan  (bias forward) husi Anoda (P) ba iha Katoda (N).

LED produs husi chip semikondutor neebe mak sei hamosu polu junction P (positivu) no N (negativu). Husi prosesu neebe mak halao iha semikondutor nia laran nee mak sei aumenta prosesu neebe mak la perfeitu husi semikonduktor (impurity) ba iha semikonduktor neebe mak perfeitu atu fo sai resultadu karakterisika eletrisidade neebe mak ita hakarak. Bainhira  LED simu tensaun riversa ou bias forward mak hanesan Anoda (P) ba iha Katoda (N), forsa husi elektron ba iha N-Type material sei muda ba iha forsa Hole ka kuak (lubang) iha momentu nee kapasidade positivu (P-Type material). Bainhira electron hasoru malu mak  Hole nee sei husik photon atu bele hamosu naroman. Bele hare figura iha kraik.

 

Figura : maneira serbisu LED

 

Bainhira LED ka Light Emitting Diode nee hetan fontes de energia mak nia sei muda energia elektrika nee ba iha energia naroman nia tanba nee sei hamosu naroman husi LED nee rasik. 

Maneira atu hatene Polaritas husi LED

 

 

Figura: polaritas LED

Atu hatene polaritas terminal Anoda (+) no Katoda (-) husi LED. Ita bele hare husi nia fiziku bazeia ba dezenhu neebe mak hatudu iha leten nee. Karakteristika husi Terminal Anoda ka positivu husi LED mak nia ain neebe mak naruk liu no mos Lead Frame neebe mak kiik liu.

No karakteristika husi  Terminal katoda mak ain ida neebe badak liu no iha  Lead Frame neebe mak boot no iha pozisaun neebe mak Flat ou belar.

 

Kores husi LED (Light Emitting Diode)

Too ohin loron LED iha kor neebe mak oioin ona. Mak hanesan kor Mean, kor kinur, kor azul, kor mutin kor matak kor pink no mos infra merah.

 

Figura : Kores LED

Kores oioin husi  LED nee depende ba iha wavelength (panjang gelombang) no mos sasan neebe mak produs sai LED. Tuir mai nee mak tabela husi Semikonduktor neebe mak utiliza atu bele produs LED neebe mak lakan ho kor oioin :

Sasan semikondutor	Wavelength	Kor
Gallium Arsenide (GaAs)	850-940nm	Infra Merah
Gallium Arsenide Phosphide (GaAsP)	630-660nm	Mean
Gallium Arsenide Phosphide (GaAsP)	605-620nm	Mean/Jingga
Gallium Arsenide Phosphide Nitride (GaAsP:N)	585-595nm	Kinur
Aluminium Gallium Phosphide (AlGaP)	550-570nm	Matak
Silicon Carbide (SiC)	430-505nm	Azul
Gallium Indium Nitride (GaInN)	450nm	Mutin

 

Tensaun Riversa  (Forward Bias) LED

Kores oioin husi LED (Light Emitting Diode) presiza tensaun riversa  (Forward Bias) atu bele halo LED lakan. Tensaun riversa ba iha LED nee presiza kiik liu tamba nee tenke presiza  Resistor balu  atu bele kontrola korente no tensaun atu labele halo LED nee at. Tensaun riversa ka (Forward Bias)  baibain hatudu ho simbolu VF.

Kor	Forward bias @20mA
Infra Merah	1,2V
Mean	1,8V
Pink / Jingga	2,0V
Kinur	2,2V
Matak	3,5V
Azul	3,6V
Mutin	4,0V

 

Utilizasaun  LED iha moris loron loron nian

Teknolojia LED iha funsaun neebe mak boot tebes no sai benefisiu neebe mak diak tebes mak hanesan la manas, uja kleur ka dura ba tempu naruk, la sai perigu ba ema no la dun influesnia ba iha energia elektrika la presiza uja energia elektrika neebe mak boot liu no ho nia modelu neebe mak kik oan nee halo ema barak ohin loron utiliza barak liu iha teknolojia naroman nian. Iha produsaun barak neebe mak presiza naroman nee ohin loron utiliza barak liu mak LED  Light Emitting Diode (LED) nee. Tuir mai nee mak sasan sira neebe produs husi LED hodi utiliza loron loron iha ema nia moris :

·       1.Lampu neebe mak ita uja iha Uma

·       2. Lampu neebe uja iha Dalan

·       3. Plaka promosaun sira iha dalan (Advertising)

·       4. Backlight LCD (TV, Display Handphone, Monitor)

·       5. Lampu Dekorasaun Interior no mos Exterior

·       6. Lampu Indikator

 

Ami espera kata belun sira neebe mak lee ona materia nee bele kumpriende kona ba saida mak komponente resistor