Ubudlelwano phakathi kwekhwalithi yezibani ze-LED kanye nokunikezwa kwamandla
I-LED inezinzuzo eziningi ezifana nokuvikelwa kwemvelo, impilo ende, ukusebenza kahle okuphezulu kwe-photoelectric (ukukhanya kwamanje ukukhanya kufinyelele ku-130LM / W~ 140LM / W), ukumelana nokuzamazama komhlaba, njll. Eminyakeni yamuva, isicelo sayo sithuthukiswe ngokushesha ezimbonini ezihlukahlukene. Ngokombono, impilo yesevisi ye-LED iyihora elingu-100,000, kodwa ohlelweni lwangempela lokufaka isicelo, abanye abaklami bokukhanyisa izibani ze-LED abanakho ukuqonda okwanele noma ukukhetha okungalungile kwamandla okushayela e-LED noma baphishekele ngokungaboni izindleko eziphansi. Ngenxa yalokho, ukuphila kwemikhiqizo yokukhanyisa kwe-LED kufushane kakhulu. Impilo yezibani ze-LED ezimpofu ingaphansi kwamahora angu-2000 futhi iphansi nakakhulu. Umphumela uba ukuthi izinzuzo zezibani ze-LED azikwazi ukuboniswa ekusetshenzisweni.
Ngenxa yemininingwane yokucubungula nokukhiqizwa kwe-LED, izici zamanje nezamandla kagesi zama-LED akhiqizwa abakhiqizi abahlukene ngisho nomkhiqizi ofanayo eqoqweni elifanayo lemikhiqizo unomehluko omkhulu ngamunye. Ukuthatha ukucaciswa okujwayelekile kwamandla aphezulu we-LED emhlophe engu-1W njengesibonelo, ngokuya ngemithetho yamanje kanye ne-voltage ye-LED, incazelo emfushane inikezwa. Ngokuvamile, i-voltage eya phambili yohlelo lokusebenza lokukhanya okumhlophe okungu-1W icishe ibe ngu-3.0-3.6V, okungukuthi, lapho ilebulwe ngokuthi 1W LED. Uma i-current igeleza ku-350 mA, i-voltage ngaphesheya kwayo ingaba ngu-3.1V, noma ingaba amanye amanani kokuthi 3.2V noma 3.5V. Ukuqinisekisa ukuphila kwe-1WLED, umkhiqizi ojwayelekile we-LED uncoma ukuthi ifekthri yesibani isebenzise i-350mA yamanje. Lapho i-front current nge-LED ifinyelela ku-350 mA, ukunyuka okuncane kwe-voltage eya phambili kuyo yonke i-LED kuzobangela i-LED phambili yamanje ukuthi ikhuphuke kakhulu, okubangele izinga lokushisa le-LED likhuphuke ngendlela, ngaleyo ndlela kusheshise ukubola kokukhanya kwe-LED. Ukufinyeza impilo ye-LED ngisho nokushisa i-LED uma ibucayi. Ngenxa yolwazi lwamandla kagesi kanye nezinguquko zamanje ze-LED, izimfuneko eziqinile zibekwe phezu kwamandla okushayela i-LED.
Umshayeli we-LED uyisihluthulelo sezibani ze-LED. Kufana nenhliziyo yomuntu. Ukuze wenze izibani ze-LED ezisezingeni eliphezulu zokukhanyisa, kuyadingeka ukushiya i-voltage engaguquki ukushayela ama-LED.
Izitshalo eziningi zokupakisha ze-LED ezinamandla aphezulu manje zivala ama-LED amaningi ngamanye ngokuhambisana futhi ochungechungeni ukukhiqiza i-LED eyodwa engu-20W, 30W noma 50W noma 100W noma amandla aphezulu e-LED. Noma ngaphambi kwephakheji, akhethwe ngokuqinile futhi afaniswe, kukhona inqwaba namakhulu ama-LED ngamanye ngenxa yobuncane bangaphakathi. Ngakho-ke, imikhiqizo ehlanganisiwe ye-LED enamandla amakhulu isenomehluko omkhulu ku-voltage kanye neyamanje. Uma kuqhathaniswa ne-LED eyodwa (ngokuvamile ukukhanya okumhlophe okukodwa, ukukhanya okuluhlaza, ukukhanya okuluhlaza okwesibhakabhaka okusebenzayo kwe-voltage engu-2.7-4V, ukukhanya okubomvu okukodwa, ukukhanya okuphuzi, i-orange light working voltage ye-1.7-2.5V) imingcele ihluke nakakhulu!
Njengamanje, imikhiqizo yezibani ze-LED (njengama-guardrails, izinkomishi zamalambu, amalambu okukhanya, izibani zasengadini, njll.) ezikhiqizwa abakhiqizi abaningi zisebenzisa ukumelana, amandla kanye nokunciphisa amandla kagesi, bese yengeza i-Zener diode ukuze inikeze amandla kuma-LED. Kukhona amaphutha amakhulu. Okokuqala, akuphumelelanga. Idla amandla amaningi kusiphikisa esisuka phansi. Ingase yeqe ngisho namandla asetshenziswa i-LED, futhi ayikwazi ukunikeza idrayivu yamanje ephezulu. Uma i-current inkulu, amandla asetshenziswa kusiphikisa esisuka phansi angaba mkhulu, i-LED yamanje ayikwazi ukuqinisekiswa ukuthi idlula izidingo zayo zokusebenza ezijwayelekile. Lapho uklama umkhiqizo, i-voltage kuyo yonke i-LED isetshenziselwa ukushayela ukunikezwa kwamandla, okuyizindleko zokukhanya kwe-LED. I-LED iqhutshwa ukumelana nemodi yokuya phansi kwe-capacitance, futhi ukukhanya kwe-LED akukwazi ukuzinza. Uma i-voltage yokunikezwa kwamandla iphansi, ukukhanya kwe-LED kuba mnyama, futhi lapho i-voltage yokunikezwa kwamandla iphezulu, ukukhanya kwe-LED kuya kukhanya. Yiqiniso, inzuzo enkulu yokumelana nama-LED wokushayela wesinyathelo esiphansi yizindleko eziphansi. Ngakho-ke, ezinye izinkampani zokukhanyisa i-LED zisasebenzisa le ndlela.
Abanye abakhiqizi, ukuze banciphise izindleko zomkhiqizo, besebenzisa i-voltage engaguquki ukushayela i-LED, futhi kuletha uchungechunge lwemibuzo mayelana nokukhanya okungalingani kwe-LED ngayinye ekukhiqizeni ngobuningi, i-LED ayikwazi ukusebenza esimweni esihle kakhulu, njll. .
Ukushayela komthombo wamanje njalo kuyindlela yokushayela ye-LED engcono kakhulu. Iqhutshwa umthombo wamanje oqhubekayo. Ayidingi ukuxhuma izinqamuleli ezikhawulelayo zamanje kumjikelezo okukhiphayo. Ilamanje eligeleza nge-LED alithintwa izinguquko zamandla kagesi wangaphandle, izinguquko zezinga lokushisa elizungezile, namapharamitha e-LED ahlukene. Umphumela uwukugcina ingaguquki yamanje futhi unikeze ukudlala okuphelele kuzici ezihlukahlukene ezinhle kakhulu ze-LED.