Ho qaptjoa ha li-LED (light emitting diode) e ne e le ts'ebetso ea mekhahlelo e mengata e kenyelletsang menehelo e tsoang ho bo-rasaense ba bangata. Mona ke linako tse ling tsa bohlokoa tsa nalane ea ho qaptjoa ha li-LED:
Khopolo ea pele le liteko:
1907:Rasaense oa Brithani HJ Round o ile a qala ka ho hlokomela hore semiconductor material silicon carbide (SiC) e hlahisa kganya ha motlakase o kenngwa. Ena e bile ketsahalo ea pele e tlalehiloeng ea electroluminescence ea lisebelisoa tsa semiconductor.
Lilemong tsa bo-1920:Rasaense oa Lerussia Oleg Losev o ile a tsoela pele ho ithuta ketsahalo ena ’me a hatisa pampiri e buang ka melao-motheo ea li-LED ka 1927, empa ha ea ka ea hapa tlhokomelo e atileng ka nako eo.
Ntlafatso ea li-LED tse sebetsang:
1962:Nick Holonyak Jr., moenjiniere ea sebetsang ho General Electric (GE) ka nako eo, o ile a qapa leseli la pele le bonahalang la LED (LED e khubelu). Holonyak e tsejoa e le "Ntate oa li-LED".
1972:M. George Craford, seithuti sa Holonyak, o ile a qapa LED ea pele e mosehla 'me a ntlafatsa haholo khanya ea li-LED tse khubelu le tsa lamunu. O ile a etsa lintlafatso ho latela thepa ea gallium nitride phosphorus (GaAsP) ho eketsa khanya ea li-LED ka makhetlo a leshome.
Lilemong tsa bo-1970 le bo-1980: Theknoloji e tsoetseng pele e ile ea lebisa ho thehoeng ha li-LED ka mebala e mengata, ho kopanyelletsa le botala, bosehla le lamunu.
Katleho e putsoa ea LED:
Lilemong tsa bo-1990:Bo-rasaense ba Hitachi le Nichia, haholo-holo Shuji Nakamura, ba ile ba qapa li-LED tse khanyang haholo. Ena e bile katleho e kholo ho sebelisoa thepa ea gallium nitride (GaN). Ho qaptjoa ha li-LED tse putsoa ho entse hore ho be le lipontšo tsa mebala e feletseng le li-LED tse tšoeu.
2014:Shuji Nakamura, Isamu Akasaki, le Hiroshi Amano ba ile ba fuoa Khau ea Nobel ea Fisiks ka lebaka la mosebetsi oa bona oa li-LED tse putsoa.
Ntlafatso ea li-LED tse tšoeu:
Li-LED tse tšoeu hangata li entsoe ka ho kopanya li-LED tse putsoa le phosphors. Leseli le leputsoa le tsoang ho LED e putsoa le thabisa phosphor, e ntan'o hlahisa leseli le mosehla, 'me motsoako oa bobeli o hlahisa leseli le lesoeu.
Tsoelo-pele ea theknoloji ea LED e entse hore ho be le mebala e mengata ea LED eseng feela ka har'a mefuta e bonahalang, empa hape le mahlaseli a ultraviolet le a infrared. Kajeno, li-LED li sebelisoa lits'ebetsong tse fapaneng, ho kenyeletsoa lipontšo, mabone, mabone a bonts'ang le likhokahano.
Lintlha tse latelang li kenyelletsa karohano ea mantlha le ts'ebeliso ea LED
● Ho hlophisoa ka matla a tlhahiso: 0.4W, 1.28W, 1.4W, 3W, 4.2W, 5W, 8W, 10.5W, 12W, 15W, 18W, 20W, 23W, 25W, 30W, 45W, 20W, 10W, 1 , 200W, 300W, joalo-joalo.
● Ho hlophisoa ka matla a tlhahiso: DC4V, 6V, 9V, 12V, 18V, 24V, 36V, 42V, 48V, 54V, 63V, 81V, 105V, 135V, joalo-joalo.
● Ho hlophisoa ka sebopeho sa ponahalo: mefuta e 'meli: PCBA boto e se nang letho le ka khetla.
● Ho arola ka sebopeho sa polokeho: mefuta e 'meli: e arohaneng le e sa tsoeng.
● Ho hlophisoa ka matla: ka tokiso ea matla le ntle le matla a matla.
● Ho hlophisoa ka ts'ebetso e sa keneleng metsi: e thibela metsi le e sa keneleng metsi.
● Ho khetholla ka mokhoa oa ho hlasimolla: ho ithabisa le ho tsosoa ka ntle.
● Ho khetholla ka topology ea potoloho: RCC, Flyback, Forward, Half-Bridge, Full-Bridge, Push-PLL, LLC, joalo-joalo.
● Ho khetholla ka mokhoa oa ho fetola: AC-DC le DC-DC.
● Ho khetholla ka ts'ebetso ea tlhahiso: motlakase o sa khaotseng, motlakase o sa khaotseng le motlakase o sa khaotseng oa hona joale le oa kamehla.
Tšebeliso ea motlakase oa mokhanni oa LED:
E sebelisoa bakeng sa mabone, mabone a khabinete, mabone a bosiu, mabone a sireletsang mahlo, mabone a siling a LED, likomiki tsa mabone, mabone a patiloeng, mabone a ka tlas'a metsi, li-washer tsa lebota, mabone a likhohola, mabone a seterateng, mabokose a mabone a signboard, mabone a likhoele, mabone a tlase, mabone a sebopeho se ikhethileng, naleli. mabone, mabone a tšireletso, mabone a mookoli, mabone a lerako la likharetene, mabone a feto-fetohang, mabone a hlobolang, mabone a mabanta, mabone a piranha, mabone a fluorescent, mabone a phahameng, mabone a borokho, mabone a merafo, litoche, mabone a tšohanyetso, mabone a tafole, mabone, mabone a sephethephethe, mabone a bolokang matla, mabone a koloi, mabone a mohloa, mabone a mebala, mabone a kristale, mabone a grille, mabone a kotopo, joalo-joalo.
Re barekisi ba phepelo ea motlakase oa LED naheng ea China, re amohelehile ho shebellalethathamo la lihlahisoa tsa rona.
Ka kopo ikopanye le mehlala e meng, tšehetsa lihlahisoa tse hlophisitsoeng.
Nako ea poso: Aug-03-2024