Ilinganisa impilo yesibani se-LED nge-LM-80 ne-TM-21
Impilo ye-LED kanye ne-Forward Current
Ukuphila kwe-LED yangempela ekhiqiza ukukhanya kunqunywa ngokwengxenye izinga lokushisa elisebenzayo le-LED (i-LED junction temperature) kangangokuthi ukwehla kwezinga lokushisa kwenza ukuphila kwe-LED kube isikhathi eside. Esinye isici esiyinhloko esithinta impilo ye-LED sihlobene namanje oya phambili njengoba kushiwo silingana nokukhanya kwe-LED. Ngokuvamile, i-forward current akuyona inkinga enkulu njengoba abakhiqizi be-LED bezocacisa ububanzi bokusebenza obuphephile, nakuba ububanzi obuphezulu budinga umklamo ongcono wokucwilisa ukushisa. Uma i-LED ishisa kakhulu imisinga eya phambili ephansi inganweba impilo ye-chip ye-LED, nakuba ngokuvamile uma i-chip ye-LED igcinwa ipholile ngokuklanywa kahle kwesinki sokushisa (ngaphansi kuka-85°C), isikhathi sokuphila ngeke sihluke kakhulu.
Ukulindela Impilo ye-L70 ye-LED
Amalambu okukhanya e-LED awavamisile ukuthi ahluleke ngendlela eyingozi njengalapho kwandulela ama-incandescent. Uma abakhiqizi becacisa impilo ye-LED noma impilo yayo yonke isibani se-LED ngamahora basuke bebhekise kudatha ye-L70 emele isilinganiso sethiyori esinembe ngokunengqondo sesikhathi esithathwe ukuze i-LED ilahlekelwe u-30% wokukhanya kwayo noma yehliselwe ku- 70% wokukhanya kwayo kwasekuqaleni, yingakho i-L70. Lokhu kuvame ukucaciswa ebangeni lamahora angu-30,000 kuya kwangu-40,000 futhi kuvame ukubizwa ngokuthi ukulungiswa kweLumen noma ukwehla kwenani leLumen.
Kodwa-ke, ukukhanya kwe-LED ngeke kwehluleke kungazelelwe kodwa kuqhubeke nokukhiqiza ukukhanya ngale kwephoyinti lempilo ye-L70, nakuba ukukhanya kuphansi kuze kube yilapho ukukhanya kuba mnyama kakhulu ukuthi kungasebenziseka. Izilinganiso ziphakamisa ukuthi ukukhanya kwe-LED kuzohlala amahora afika kwangu-100,000 noma ngaphezulu ngaphambi kokuthi kucime. Ezisetshenziswa eziningi lokho “ukukhanya kokuphila”! Ngakho-ke, impilo ye-LED ivamise ukuba yinde ngokwanele futhi ayibi yinkinga ngempela ngaphandle kwamahora okusebenza anwetshiwe noma izinga lokushisa eliphezulu lokusebenza, njengoba kushiwo okungaba umphumela wokuklama okubi.
Ukubalwa kwe-L70 Life Expectancy kusetshenziswa idatha yokuhlola ye-LM-80 kanye ne-TM-21 Extrapolation
Ukubalwa kwendawo yokuphila ye-L70 LED kuyinqubo elula kodwa edla isikhathi kusetshenziswa idatha yokuhlola ye-LM-80 edinga ukukhanya noma ukuhlolwa kokukhanya kwamasampula e-LED amaningi emazingeni okushisa amathathu ahlukene, 55°C, 85°C nelinye, futhi ukunquma ukulahlekelwa kwamandla okukhanya kumaphoyinti esikhathi amaningi ngaphezu kwamahora angu-6000 kuya kwangu-8000. Ukuhlola kungathatha cishe unyaka owodwa ukwenziwa.
Njengoba sekushiwo, uma sesinedatha yokuhlola ye-LM-80 ye-chip ye-LED singabe sesikhipha ngaphezulu sisebenzisa indlela ye-TM-21 ewumsebenzi ocacile kanye nefomula yokuqinisekisa impilo ye-L70 ngamahora we-chip ye-LED uma yehla ibe ngu-70. % okukhiphayo.
