Ukukhanya Kwe - LED Kukwazi Kangakanani?

Ukubola kokukhanya kwe-LED kuthetha ukuba emva kwexesha lokukhanya, ukukhanya kwayo okunamandla kuya kuba ngaphantsi kokukhanya kwasekuqaleni, kwaye indawo engezantsi i-LED yokukhanya kokukhanya. , Wonke umntu uyaqonda ukuba indlela ebalulekileyo yokunciphisa ukubola kokukhanya kukuphucula ukutshatyalaliswa kobushushu bayo. Nangona kunjalo, iziphumo zovavanyo lwezibane zesitrato ezahlukeneyo ziye zavavanywa kutshanje yiZiko loLawulo lweNdawo yokuKhanya, kwaye ukubola kokukhanya kwezibane ezininzi zesitalato akukwazi ukuhlangabezana neemfuno zokusetyenziswa. Ukubola kokukhanya emva kweeyure ze-1200 zokukhanya yi-8%, embi kakhulu yi-26%, kwaye i-avareji yi-14%. Ngokweziphumo zethu zovavanyo, xa iqondo lobushushu leqhina liku-105 degrees, i-14% yokubola ukukhanya kufuneka isebenze iiyure ezingama-6000. Kuyabonakala ukuba iqondo lobushushu leqhina kwizibane ezininzi zesitrato lingaphezulu kwe-105 degrees okanye ngaphezulu. Inxalenye enkulu yenkampani akufuneki ivumelane nesiphumo esinjalo, kuba bacinga ukuba iradiyetha yabo iyilwe ngononophelo. Imeko yokwenyani inokuba yinto efanayo, kodwa iziphumo zovavanyo azinakuthandabuza. Yintoni ingxaki? Umhleli ukholelwa ukuba iradiyetha ayinakuyilwa kakubi kangako, kodwa inokwenzeka. Kodwa kutheni unikezelo lwamandla ombane rhoqo lubangela ukubola kokukhanya? Oku kuvakala ngathi kusezulwini kancinane. Kodwa enyanisweni, kukho ezinzulu kakhulu. Masiqale ekuqaleni! 1. Sonke siyazi ukuba i-Viaticity ye-LED yi-diode, kwaye ezona mpawu zibalulekileyo zombane ze-diode yindalo yayo yeVodiat. 2. Nangona iimpawu zobushushu beempawu ze-Voldown ze-LED azifani ne-avareji diode, umahluko omkhulu kukuba iimpawu zayo zobushushu. Enyanisweni, zonke iidiode zinengxaki yeempawu zeqondo lokushisa, kodwa i-LED idinga ingqalelo ekhethekileyo ukuhlawula ingqalelo ekhethekileyo. Oku kungenxa yokuba: Umbane osebenzayo we-LED ephezulu kakhulu, i-1W yi-0.35A, i-3-5W yi-0.7A, i-20W yi-1.05A, i-30W yi-1.75A, i-50W yi-3.5A yi-3.5A. Nangona kunjalo, abanye abantu banokuvakalelwa kukuba i-potive current ye-rectifier diode inokufikelela kwixabiso elikhulu. Ngenxa yokuba ukukhanya okukhuphayo okusebenzayo okwangoku kusezantsi, uninzi lwamandla ombane wegalelo aguqulwa abe bubushushu, ngoko ukufudumeza kwawo kuphezulu kakhulu. Ukuba iradiyetha ayenzi kakuhle, ubushushu beqhina buya kunyuka kakhulu. I-LED yahlukile kwi-diode yokulungisa. Ayenziwe ngezinto eziqhelekileyo ze-silicon, kodwa zenziwe ngezinto ezikhethekileyo (ezifana ne-nitride). Ke ngoko, iimpawu zobushushu beempawu zayo zokulalela ziyahluka kwi-avareji diode, kodwa ukuba ibe nkulu kakhulu kune-avareji diode. Umzekelo, iimpawu zobushushu beempawu zokulalela ze-avareji diode yi -2mv/ C. 3. Ingxaki ebangelwa ukwanda kweqondo lokushisa Emva kokunyuka kweqondo lokushisa kwe-LED, okokuqala kwaziswa ngokuphuma kokukhanya kuyancipha. Ukunyuswa kokulula okubangelwa kukunyuswa kweqondo lobushushu kubi kuba iqondo lobushushu leempawu zevoltano alilunganga, nto leyo ethetha ukuba ubushushu bunyukile kwaye iimpawu zishiywe zihamba. Ngokomzekelo, cinga ukuba iqondo lokushisa liphakama ngama-degrees angama-50, ngoko iimpawu zeFa'an ziya kuhamba ukuya kwi-200mv ukuya kwesobunxele. Ukusetyenziswa konikezelo lwamandla ombane rhoqo kuya kwandisa amandla akhoyo e-LED ngokunyuka kokunyuka kobushushu. Ngenxa yokuba amandla ombane ahlala ehlala, kwaye iimpawu zeFa'an zitshintshele ngasekhohlo, umphumo kukuba ukunyuka okulungileyo kwangoku. Inokubonwa kwiimpawu ze-Fuan zoMfanekiso we-2 ukuba ukuba umbane wombane oqhubekayo unikwe amandla yi-3.3V kwiqondo lokushisa lokushisa, i-front current current yi-350mA; emva kokuba iqondo lobushushu iqhina linyuka ngamaqondo angama-50, iimpawu ze-voltano zishiywe yi-0.2V, elingana nonikezelo lwamandla, olulingana nonikezelo lwamandla, olulingana nombane, olulingana nombane. Umbane unyukela kwi-3.5V. Ngeli xesha, i-positive current iya kunyuka ibe yi-600mA. 4. Emva kokusetyenziswa komjikelo okhohlakeleyo wokunyuka kwamaqondo obushushu ukunyusa umjikelo okhohlakeleyo wonikezelo lwamandla ombane rhoqo, kuba amandla ombane ombane akatshintshanga, amandla egalelo le-LED ayanda ukuya ku-3.3VX0.6A = 1.98W, eneneni iphindwe kabini ngokuphindwe kabini. Emva kokuba iqondo lokushisa linyuka, ukuphuma kokukhanya kuya kuncipha, oku kuthetha ukuba amandla amaninzi okufakelwa aguqulelwa kumandla okushisa, oko kukuthi, ukuba ukunyuka kwangoku kwanda ngeli xesha, ukukhanya kwayo akunyuki njengoko kunyuka, kodwa kuya kuncipha. . Ngoko ke, ukunyuka kwe-positive current ngeli xesha kuya kubangela kuphela ukunyuka kweqondo lokushisa, kwaye akuyi kwandisa ukukhutshwa kokukhanya. Ke ngoko, emva kokunyuswa kweqondo lobushushu leqhina, ukunyuka okuncomekayo kwangoku, ubushushu beqhina buyakhula, kwaye ukunyuka kwangoku kwangoku, okubangela umjikelezo onoburhalarhume wokunyuka kobushushu bobushushu beqhina. Isiphelo: Ukusetyenziswa konikezelo lwamandla ombane rhoqo kuya kwandisa ubushushu beqhina, konyuse ukubola kokukhanya, kwaye bufutshane ubomi. Ngoko ke, kuhlalutyo lwangaphambili, sinokufikelela kwisigqibo esinjalo: Ukusetyenziswa kwamandla ombane ombane rhoqo kuya kwandisa ubushushu beqhina, kwaye umphumo wokunyusa ubushushu beqhina unyuswa ngokubola kokukhanya kunye nobude bobomi obufutshane. Ukucinga ukuba i-LED ivuliwe kwii-degrees ezingama-25 kwiqondo lokushisa, iqondo lokushisa liya kunyuka emva kokuqalisa. Cinga ukuba i-radiator yenzelwe ukunyuka ukuya kuma-degrees angama-75, oko kukuthi, iqondo lokushisa linyuka ngama-degrees angama-50, ngoko umbane osebenzayo uya kunyuka ukuya kwi-600mA ukuya kwi-600mA ukuya kwi-600mA. Amandla apheleleyo anyuka ukusuka kwi-1.155W ukuya kwi-1.98W, ukwanda kwe-0.825W 0.825W. Kwaye amandla anyukile kule nxalenye phantse yonke iguqulelwe kubushushu. Kucingelwa ukuba ukukhanya kwe-LED yantlandlolo yi-30%, oko kukuthi, amandla angama-70% okufakwayo (0.8W) aguqulelwa kumandla obushushu ukuya kumandla obushushu. Ngoku kukho amandla aphindwe kabini ashushu ekufuneka asasazwe kwiradiyetha. Ngokucacileyo, oku akuqwalaselwa kuyilo lweradiyetha yokuqala. Oku kunyuse ubushushu be-knot ye-LED ngama-50 degrees ukuya kwi-125 degrees. Masibuyele kuMfanekiso 1 ukuze sibone ijiko lokubola lokubona. Ubomi bokukhanya kwe-125 degrees phantse iiyure ezingama-1200. Emva koko unokuchaza ukuba kutheni i-radiator eyenziwe ngononophelo. Kusekubola okuninzi kunye nobomi obufutshane! Ke ngoko, unikezelo lwamandla kwi-LED kufuneka luxhaswe ngumbane okhoyo ngoku. Emva kokuba i-current ihleli, kungakhathaliseki ukuba iqondo lokushisa litshintsha njani, iimpawu zokulalela zihanjiswa ngakwesobunxele, kwaye umsinga awutshintshi! Ubushushu beqhina abuyi kuba noburhalarhume!