Ukukhanya Kwe - LED Kwazi Kangakanani?

Ukubola kokukhanya kwe-LED kusho ukuthi ngemva kwesikhathi sokukhanya, ukukhanya kwayo okuqinile kuyoba ngaphansi kunokukhanya kwasekuqaleni, kanti ingxenye engezansi ukubola kokukhanya kwe-LED. , Wonke umuntu uyaqaphela futhi ukuthi indlela ebalulekile yokunciphisa ukubola kokukhanya ukuthuthukisa ukuchithwa kwayo kokushisa. Nokho, imiphumela yokuhlolwa kwezibani zasemgwaqweni ezihlukahlukene isanda kuhlolwa yi-Light Environment Management Center, futhi ukubola kokukhanya kwezibani eziningi zasemgwaqweni akukwazi ukuhlangabezana nezidingo zokusetshenziswa. Ukubola kokukhanya ngemva kwamahora angu-1200 okukhanya kungama-8%, okubi kakhulu ngama-26%, kanti isilinganiso singu-14%. Ngokwemiphumela yethu yokuhlolwa, lapho izinga lokushisa lefindo lingama-degree angu-105, ukubola okungu-14% kufanele futhi kusebenze amahora angu-6000. Kuyabonakala ukuthi izinga lokushisa lefindo lezibani eziningi zasemgwaqweni lingaphezu kwamadigri ayi-105 noma ngaphezulu. Ingxenye enkulu yenkampani akufanele ivumelane nomphumela onjalo, ngoba bacabanga ukuthi i-radiator yabo iklanywe ngokucophelela. Isimo sangempela singase sifane, kodwa imiphumela yokuhlolwa ayinakungabaza. Yini inkinga? Umhleli ukholelwa ukuthi irediyetha ingase ingaklanywanga kabi kangako, kodwa ingase. Kodwa kungani ukunikezwa kwamandla kagesi kagesi njalo kubangela ukubola kokukhanya? Lokhu kuzwakala njengokwasezulwini kancane. Kodwa empeleni, zikhona ngempela ezingathí sina. Ake siqale kusukela ekuqaleni! 1. Sonke siyazi ukuthi i-Viaticity ye-LED iyi-diode, futhi izici zikagesi ezibaluleke kakhulu ze-diode imvelo yayo ye-Vodiat. 2. Nakuba izici zokushisa zezici ze-LED Voldown azifani nalezo ze-diode evamile, umehluko omkhulu ukuthi izici zayo zokushisa. Eqinisweni, wonke ama-diode anenkinga yezici zokushisa, kodwa i-LED idinga ukunakwa okukhethekile ukuze inake ngokukhethekile. Lokhu kungenxa yokuthi: Ukusebenza kwamanje kwe-LED enamandla amakhulu kukhulu uma kuqhathaniswa, i-1W i-0.35A, i-3-5W i-0.7A, i-20W i-1.05A, i-30W i-1.75A, i-50W i-3.5A i-3.5A. Kodwa-ke, abanye abantu bangase babe nomuzwa wokuthi i-positive current ye-rectifier diode ingase ifinyelele inani elikhulu kangaka. Ngenxa yokuthi ukusebenza kahle kokukhishwa kokukhanya kwamanje kusephansi kakhulu, amandla amaningi kagesi okufakwayo aguqulwa abe ukushisa, ngakho-ke ukushisa kwawo kuphezulu kakhulu. Uma i-radiator ingenzi kahle, izinga lokushisa lefindo lizokhuphuka kakhulu. I-LED ihlukile kune-rectifier diode. Akwenziwa ngezinto ezijwayelekile ze-silicon, kodwa zenziwe ngezinto ezikhethekile (njenge-nitride). Ngakho-ke, izici zokushisa zezici zayo zokuqamekela zihlukile ku-diode evamile, kodwa zibe zikhulu kakhulu kune-diode evamile. Isibonelo, izici zokushisa zezimpawu zokuqamekela ze-diode emaphakathi ngu -2mv/ C. 3. Inkinga ebangelwa ukwanda kwezinga lokushisa lefindo Ngemva kokukhuphuka kwezinga lokushisa lefindo le-LED, eyokuqala elethwa ukukhishwa kokukhanya iyancishiswa. Ukuphakama kokulula okubangelwa ukuphakama kwezinga lokushisa lefindo kunegethivu ngenxa yokuthi izinga lokushisa elilingana nezimpawu ze-voltano alilungile, okusho ukuthi izinga lokushisa liphakeme futhi izici ziyekwa zinyakaze. Isibonelo, cabanga ukuthi izinga lokushisa likhuphuka ngamadigri angu-50, bese izici ze-Fa'an zizohamba ziye ku-200mv ukuya kwesobunxele. Ukusetshenziswa kwamandla kagesi kagesi njalo kuzokhuphula amandla akhona e-LED ngokukhuphuka kwezinga lokushisa. Ngenxa yokuthi amandla kagesi ahlala njalo, futhi izici ze-Fa'an zishintshele kwesokunxele, umphumela wukuthi ukwanda kwamanje okuhle. Kungabonakala ezicini ze-Fuan zoMdwebo 2 ukuthi uma amandla kagesi ahlala njalo enikwa amandla yi-3.3V ekamelweni lokushisa, okwamanje okuhamba phambili kungu-350mA; ngemva kokuba izinga lokushisa lefindo likhuphuke ngamadigri angu-50, izici ze-voltano zishiywa ngu-0.2V, okulingana nokunikezwa kwamandla, okulingana nokunikezwa kwamandla, okulingana nokunikezwa kwamandla, okulingana nokunikezwa kwamandla. Amandla kagesi akhuphukela ku-3.5V. Ngalesi sikhathi, i-positive current izonyuka ibe ngu-600mA. 4. Ngemuva kokusetshenziswa komjikelezo ononya wokukhuphuka kwezinga lokushisa ukwandisa umjikelezo ononya wokunikezwa kwamandla kagesi njalo, ngoba amandla kagesi ashintshiwe, amandla okufaka we-LED akhuphuka aze afike ku-3.3VX0.6A = 1.98W, kuphindwe kabili ngokuphindwe kabili. Ngemuva kokuthi izinga lokushisa le-findo likhuphuka, ukuphuma kokukhanya kuzokwehla, okusho ukuthi amandla amaningi okufaka aguqulwa abe amandla ashisayo, okungukuthi, uma i-front current ikhula ngalesi sikhathi, ukuphuma kwayo kokukhanya akukhuphuki njengoba kwanda, kodwa kuzokwehla. . Ngakho-ke, ukwanda kwamandla okuhle ngalesi sikhathi kuzobangela kuphela ukwanda kwezinga lokushisa lefindo, futhi ngeke kwandise ukuphuma kokukhanya. Ngakho-ke, ngemva kokwandisa izinga lokushisa lefindo, ukwanda kwamanje okuhle, izinga lokushisa lefindo liyakhula, futhi ukwanda kwamanje kwamanje, okubangela umjikelezo ononya wokushisa okukhuphukayo kwefindo lokushisa. Isiphetho: Ukusetshenziswa kwamandla kagesi kagesi njalo kuzokhuphula izinga lokushisa lefindo, kukhuphule ukubola kokukhanya, futhi kufinyeze ukuphila. Ngakho-ke, kusukela ekuhlaziyeni kwangaphambilini, singafinyelela esiphethweni esinjalo: Ukusetshenziswa kwamandla kagesi kagesi njalo kuzokhuphula izinga lokushisa lefindo, futhi umphumela wokwandisa izinga lokushisa lefindo ukhuphuka ngokubola kokukhanya kanye nesikhathi sokuphila esifushane. Uma sicabanga ukuthi i-LED ivulwa ngamadigri angu-25 ekamelweni lokushisa, izinga lokushisa lefindo lizokhuphuka ngemva kokuqalisa. Cabanga ukuthi i-radiator iklanyelwe ukukhuphukela kuma-degrees angu-75, okungukuthi, izinga lokushisa lefindo likhuphuka ngama-degree angu-50, khona-ke okwamanje okuhle kuzokwenyuka ku-600mA kuya ku-600mA kuya ku-600mA. Amandla esewonke anyuke esuka ku-1.155W aya ku-1.98W, ukwanda okungu-0.825W 0.825W. Futhi amandla anda kule ngxenye cishe zonke iguqulelwe ukushisa. Uma sicabanga ukuthi ukusebenza kahle kokukhanya kwe-LED yasekuqaleni kungu-30%, okusho ukuthi, amandla okokufaka angu-70% (0.8W) aguqulelwa kumandla ashisayo abe amandla ashisayo. Manje kukhona amandla ashisayo aphindwe kabili okudingeka ahlakazwe kurediyetha. Ngokusobala, lokhu akubhekwa yi-design ye-radiator yasekuqaleni. Lokhu kukhuphule izinga lokushisa lefindo le-LED ngo-50 degrees kuya ku-125 degrees. Masibuyele emuva kuMfanekiso 1 ukuze sibone ijika lokubola kokubona. Ukuphila kwamadigri angu-125 okukhanya cishe amahora angu-1200. Khona-ke ungakwazi ukuchaza ukuthi kungani i-radiator eklanywe ngokucophelela. Kusengukubola kokukhanya okuningi nempilo emfushane! Ngakho-ke, ukunikezwa kwamandla ku-LED kufanele kunikwe amandla amandla amanje akhona. Ngemuva kokuthi i-current ihlezi, kungakhathaliseki ukuthi izinga lokushisa lishintsha kanjani, izici zokuqamekela zihanjiswa kwesokunxele, futhi okwamanje akushintshi! Izinga lokushisa lefindo ngeke libe nonya!