Ukuhlaziywa Kokuhlaziywa Kobuchwepheshe Bokulawula Kwamanje Kwamanje kwe-AC-free LED

I-LED engena-AC yehlulekile ukugwema ukuhlaziya okubalulekile okuqhubekayo kokulawula kwamanje kobuchwepheshe 1. I-AC-free LED ayilona ushintsho olubalulekile lwedivayisi. Ngamanye amazwi, empeleni ayikho i-chip ye-LED engenawo indlela yokusebenza ye-AC Electric Farm. I-AC-free LED etholakala manje iyidivayisi ehlelwe ngokukhethekile ku-chipset yangaphakathi. Kumane kuwushintsho esakhiweni sangaphakathi sedivayisi ye-LED. Yebo Izinga lobuciko akulula. Ukwethulwa kwe-AC-free LED ngokuvamile kucashunwe ulwazi olushicilelwe yiSeoul Semiconductor. Kuyabonakala ukuthi iyisekhethi yebhuloho elilungisa kabusha ukuxazulula inkinga yokuxhumana kulokho okubizwa nge-DC LED inkinga yokuphakelwa kwamandla. Kubonakala sengathi inzuzo ukuthi i-diode yokulungisa isusiwe, kodwa ukumelana okuphambene kwe-LED kunomkhawulo. Lapho igridi isesiqongweni esikhulu, akuyona inzuzo ngempela. Ngenxa yokuthi iwukulingisa kwesekhethi yebhuloho elilungisa kabusha, uhhafu kuphela wamanje ogeleza engalweni yamabhuloho amane, futhi umthwalo we-DC ugeleza kuwo wonke wamanje, okuholela ekusabalaleni kwamanje kokulayishwa kwama-LED eqenjini ngalinye. Futhi ukusebenza kahle kokukhipha ukukhanya, okufana ne-overcurrent ukuze kubangele ukubola kokukhanya futhi kuthinte ukuphila. Kulula ukuxazulula. Isiyingi esifushane nje i-DC LED iyasuswa. Bhekisisa isekethe, futhi manje isiphenduke ama-LED amahle futhi ahlehla eqenjini ngalinye. Eqinisweni, akudingekile ukuba ube yinkimbinkimbi kakhulu ekuqaleni. 2. I-LED engena-AC ayikugwemi ubuchwepheshe bokulawula obuqhubekayo obubalulekile. Kusukela esethulweni, umphumela wokukhanya we-AC LED awuphakeme ngokwanele kune-LED evamile. Kuthiwa yisigaba sentuthuko. Umbhali ukholelwa ukuthi isisekelo sama-chips e-LED afanayo siyafana. Into eyinhloko ukukhawulela inani lokukhanya nge-tile ngayinye uhlobo lwesifunda sebhuloho lokulungisa. Cabanga ukuthi yiqembu elilodwa kuphela lama-LED elingasebenza ngokujwayelekile, linikeze ukudlala okugcwele kumphumela wokukhanya, futhi u-80% wamaqembu amane asele asebenza esimweni sokubhala ngaphansi nemiphumela yokukhanya engemihle. Kungakhathaliseki ukuthi ithuthukiswa kanjani ngayo, iphansi ngokwemvelo kunaleyo yokusebenza kahle kwe-LED evamile. Indlela yokwenza ngcono ukushiya umgwaqo webhuloho lokulungisa okungenangqondo. Awukho umsebenzi oqhubekayo wokuvikela wamanje ku-LED engena-AC. Lapho isetshenziswa, kufanele ixhunywe ekuphikiseni ukugeleza. Kodwa-ke, lapho i-current at the limit of power supply voltage is limited, kuyadingeka ukusebenza esimweni somphumela wokukhanya ophansi wamanje oyisisekelo lapho i-voltage evamile noma ephansi. Umkhawulo wokumelana yindlela yokuvikela engeyinhle. Ayinayo nje kuphela amaphutha, kodwa futhi ithembele ekusetshenzisweni kwamandla ukuze isebenze, ukuze izinga lokusebenzisa amandla linciphe. Uma ufuna ukungeza i-PTC ukuze uxazulule inkinga yamanje ye-LED eqhubekayo, awazi ngokwanele mayelana nokusebenza kwengxenye. I-PTC isetshenziswa kakhulu ekuvikelweni kwe-overcurrent kanye nokuvikela okushisayo. Lapho i-current in circuit inkulu kakhulu, lapho i-PTC ifinyelela izinga lokushisa lendawo yokuhlala ngemva kokushisa, inani lokumelana likhuphuka kakhulu ekunqamuleni. Umjikelezo wokuqeda ku-TV yombala uwusebenzisela ukukhiqiza umhwamuko omkhulu wamanje wokuthobisa. Demagnetic. Uma i-resistor ye-PTC ithintwa ukushisa okuzungezile, izinga lokushisa lizovulwa lapho izinga lokushisa liba ngaphezu kwendawo yokuhlala, engadlala indima ekushintsheni ukuvikela okushisayo. Uma ufuna ukuncika kuzici ze-coefficient yezinga lokushisa elihle lokumelana ne-PTC kumphumela wokuvikela oqhubekayo we-LED wamanje: Okokuqala, ukumelana ne-PTC kudlula okwamanje, kunenqubo yesikhathi sokushisa ukuze ushise. Eyamanje isivele ilimele i-LED. Okwesibili, izinga lokushisa elizenzakalelayo lokushisisa le-PTC resistor lingalawula ngempela amandla amanje. Khona-ke umthelela wezinga eliphezulu lokushisa kwemvelo kanye nokwehla kungase kuguqule inqwaba yamadigri ukwenza lokhu "ivelu yokusakaza okuqhubekayo" kushintshe kube yize. Kungenzeka yini ukuthi amadivaysi e-LED ajwayelekile nawo angaba lula kakhulu ukugeleza ngesikhathi samanje esilula? Ngeshwa. Futhi imvamisa ukugeleza okuqhubekayo kokuxhumana kuyinkinga kakhulu kune-DC eqhubekayo yamanje. Eqinisweni, kungaba nazo zonke izinhlobo zokwesekwa Komkhiqizo wekhwalithi ephezulu. Esikhundleni samandla, abakhiqizi be-LED bazoba namandla kakhulu mayelana nobuchwepheshe besifunda, futhi kungcono ukugxila ekuthuthukiseni imikhiqizo yokukhanyisa i-LED ebiza kancane futhi ephezulu.