Wake wabheka ukukhanya kwe-LED okuncane, okukhazimulayo futhi wazibuza ukuthi kusebenza kanjani? Kungani inokukhanya okungaguquki kangaka futhi ingashi ngokushesha? Kungani amanye ama-LED ekhanya kakhudlwana kuyilapho amanye efiphala ngokushesha? Yonke le mibuzo yehlela ohlotsheni lwesishayeli se-LED esisetshenzisiwe.
Ama-LED (Ama-Light Emitting Diodes) ziwuhlobo lobuchwepheshe bokukhanyisa obusebenza kahle, obuqinile, futhi obuhlala isikhathi eside. Badinga umshayeli we-LED ukuthi asebenze ngendlela efanele nangamandla awo agcwele. Lokhu okuthunyelwe kuzongena emhlabeni wabashayeli be-LED, ikakhulukazi Abashayeli be-Constant Current kanye ne-Constant Voltage LED, futhi ikusize uqonde ukuthi iyiphi engase ilungele izidingo zakho zokukhanyisa.
Uma ufuna ukwazi ngama-LED noma unephrojekthi ehlanganisa ukukhanya kwe-LED, qhubeka ufunda ukuze uqonde lezi zingxenye ezibalulekile ngokugcwele.
I. Isingeniso
Isingeniso esifushane sama-LED (Ama-Light-Emitting Diodes)
Ama-Diode Akhipha Ukukhanya or LED zingamadivaysi e-semiconductor akhipha ukukhanya lapho umsinga kagesi udlula kuwo. Baziwa kakhulu ngokusebenza kahle kwabo nokuphila isikhathi eside, okubenza badume ezinhlelweni zokukhanyisa ezihlukahlukene, kusukela ekukhanyisweni kwasekhaya kuya kumasignali omgwaqo kanye nezikrini zedijithali.
Incazelo Yesidingo Sabashayeli Be-LED
Nakuba esebenza kahle futhi eguquguquka, ama-LED asebenza ngokuhlukile kuma-incandescent endabuko noma ama-fluorescent bulb. Zidinga izimo ezithile zamanje kanye ne-voltage ukuze zisebenze kahle, okwenziwa umshayeli we-LED.
Ngaphandle komshayeli, i-LED ingase ishise kakhulu futhi ingazinzi, okuholela ekusebenzeni okuncane kakhulu, ukukhanya okungalingani, noma ngisho nokutubeka. Ngakho-ke, umshayeli we-LED uyingxenye ebalulekile yanoma yiluphi uhlelo lwe-LED.
II. Ukuqonda Abashayeli be-LED
Incazelo yomshayeli we-LED
An Umshayeli we-LED iwumthombo wamandla oziqukayo olawula amandla adingekayo ku-LED noma iyunithi yezinhlamvu (uhlu) lwama-LED. Iqinisekisa ukuthi ama-LED asebenza ngaphansi kwezimo zawo ezishiwo.
Iqhaza Nokubaluleka Kwabashayeli Be-LED ku-LED Lighting Systems
Abashayeli be-LED badlala indima ebalulekile ezinhlelweni zokukhanyisa ze-LED. Bagcina ibhalansi yamanje kanye ne-voltage, okubalulekile ukuvimbela ama-LED emonakalweni oshisayo nokuqinisekisa ukuthi asebenza kahle kakhulu.
Ngaphandle komshayeli we-LED ofanelekile, ama-LED athambekele ekuguquguqukeni kokunikezwa kwamandla, okuholela ekukhanyeni okungahambisani, ukushintsha kombala, ukucwayiza, kanye nokulimala okungenzeka. Ngakho, umshayeli omuhle we-LED uyingxenye yokuphila isikhathi eside nokusebenza kwanoma yiluphi uhlelo lokukhanyisa lwe-LED.
III. Abashayeli Be-LED Amanje
Incazelo Yamashayeli Amanje E-LED Amanje
A Umshayeli wamanje we-LED oqhubekayo ilawula okukhiphayo okwamanje, igcine ingaguquki kungakhathaliseki ukuthi ingakanani i-voltage yokufaka noma izinguquko zomthwalo. Lesi sici sibalulekile ekunikezeni amandla ama-LED njengoba adinga amandla amanje ukuze asebenze kahle.
Indlela Abashayeli Bamanje Be-LED Abasebenza Ngayo
Umshayeli we-Constant Current ulungisa i-voltage kuwo wonke okukhiphayo ukuze agcine ukugeleza kwamanje okungashintshi. Uma ukumelana ne-LED yonkana kukhula ngenxa yezinguquko zezinga lokushisa noma ezinye izici, umshayeli wehlisa i-voltage ephumayo ukuze agcine engashintshile.
Umqondo we-Thermal Runaway kanye nokuthi Abashayeli Bamanje Be-LED Bayivimbela Kanjani
I-Thermal Runaway inkinga engaba khona ngama-LED. Kwenzeka lapho ukwanda kwezinga lokushisa kuholela ekwandeni kwamanje, okwenza i-LED ishise nakakhulu, okuholela kumjikelezo obhubhisayo ongagcina ulimaze i-LED.
Abashayeli be-Constant Current bavimbela lokhu ngokugcina izinga lokushisa elizinzile naphezu kokushintsha kwezinga lokushisa, banciphise ngempumelelo ingcuphe yokubaleka okushisayo.
Izinzuzo Zokusebenzisa Amashayeli Amanje E-LED Amanje
Abashayeli be-Constant Current baqinisekisa ukukhanya okungaguquguquki kuwo wonke ama-LED axhunywe ochungechungeni, okuthuthukisa ukufana okubonakalayo kukonke. Ziyasebenza futhi ekugwemeni ukutubeka kwe-LED noma ukubaleka okushisayo.
Amaphutha Angaba Khona noma Imikhawulo
Ngaphandle kwezinzuzo zabo, abashayeli be-Constant Current bangase babe nemikhawulo. Isibonelo, adinga ukufaniswa okunembayo nezidingo zamanje ze-LED futhi ngokuvamile zibiza kakhulu kunezishayeli ze-Constant Voltage.
IV. I-Constant Voltage LED Drivers
Incazelo ye-Constant Voltage LED Drivers
A Umshayeli we-Constant Voltage LED igcina i-voltage engashintshi kungakhathaliseki ukuthi umthwalo udonsa kangakanani. Lokhu kuvame ukusetshenziselwa amasistimu e-LED asevele efakwe izinto eziphikisayo noma isilawuli samanje esisebhodini, njengokuthi Izibani ze-strip ze-LED.
Asebenza Kanjani Abashayeli Be-Voltage LED Eqhubekayo
Umshayeli we-Constant Voltage ugcina i-voltage efanayo kukho konke okukhiphayo, kungakhathaliseki ukuthi ungakanani umthwalo wamanje. Lokhu kubaluleke kakhulu uma unika amandla ama-LED amaningi axhunywe ngokuhambisana.
Izinzuzo Zokusebenzisa Amashayeli E-LED Angena Ngamandla Kagesi
Abashayeli be-Constant Voltage bajwayele ukuklama nokufaka onjiniyela, okungenza inqubo yokusetha ibe lula. Bangakwazi ukwehlisa izindleko ezinhlelweni zokusebenza ezinkulu ngenxa yokwakheka kwazo okuqondile.
Amaphutha Angaba Khona noma Imikhawulo
Omunye umkhawulo omkhulu wabashayeli be-Constant Voltage ukuncika kwabo ezingxenyeni ezengeziwe zokulawula kwamanje kuyunithi ngayinye ye-LED. Lokhu kungenza isistimu ibe nzima kakhulu futhi ingabi nokwethenjwa ngokuhamba kwesikhathi.
Izibonelo Zezicelo
Izinhlelo zokusebenza ezijwayelekile zokushayela i-Constant Voltage zihlanganisa izibani ezingaphansi kwekhabhinethi kanye nezinhlelo zokusebenza ze-LED flex strip lapho ama-LED amaningi axhumeke ngokuhambisana.
V. Ukuqhathanisa phakathi kwama-Constant Current kanye nama-Constant Voltage LED Drivers
Ithebula elilandelayo libonisa umehluko omkhulu phakathi kwezishayeli ze-Constant Current kanye ne-Constant Voltage LED:
| UConst yamanje | UConst Voltage | |
| Okukhiphayo | UConst yamanje | UConst Voltage |
| Ivimbela i-Thermal Runaway | Yebo | Cha |
| Ukukhanya Okuvumelanayo | Yebo | Kuncike Ekulawuleni Kwamanje Okwengeziwe |
| Sebenzisa Icala | Ama-LED Amandla Aphezulu | Imichilo ye-LED, imigoqo, njll. |
Ukukhetha phakathi kwakho kokubili kuncike ohlelweni oluthile. Ama-Constant Current drivers ngokuvamile ancamela ama-LED anamandla amakhulu, lapho kubalulekile ukuphatha okushisayo. Ngakolunye uhlangothi, abashayeli be-Constant Voltage basetshenziselwa imikhiqizo ye-LED enama-LED amaningi ahlanganiswe ndawonye, njengamalambu ezintambo ze-LED, imichilo ye-LED, namabha e-LED.
VI. Ukukhetha Umshayeli We-LED Ofanele
Izinto Okufanele Uzicabange Lapho Ukhetha Phakathi Kwamadrayivu E-LED Amanje Amanje Nama-Constant Voltage
Ukukhetha umshayeli we-LED ofanele kuncike ezintweni ezihlukahlukene, okuhlanganisa i-LED ethile noma izimfuneko zikagesi zamalungu afanayo, inombolo nokuhlelwa kwama-LED ohlelweni (uchungechunge noma ukuhambisana), kanye nezimo zamandla zendawo yakho.
Amathiphu Wokukhetha Umshayeli We-LED Ongakwesokudla wezinhlelo zokusebenza ezithile
Umshayeli we-Constant Voltage uyadingeka uma i-LED noma i-array icacisa i-voltage ethile. Kodwa-ke, uma usebenza ngama-LED anamandla amakhulu, umshayeli we-Constant Current angaba nenzuzo ukuvimbela ukuphuma okushisayo nokuqinisekisa ukugqama okungaguquki.
Bheka imininingwane yomkhiqizi bese uthintana nochwepheshe bokukhanyisa uma udinga ukucaciseleka.
VII. Imibuzo Evame Ukubuzwa
VIII. Isiphetho
Amashayeli e-LED, kungaba i-Constant Current noma i-Constant Voltage, adlala indima ebalulekile ekugcineni ukusebenza nempilo ende yama-LED akho. Nakuba zombili zinezinzuzo kanye nemikhawulo yazo, ukukhetha kwakho kufanele kusekelwe ezidingweni ezithile zohlelo lwakho lwe-LED.
