Hlaziya Ukwehluleka Kwemojula Yokukhanya Kwe-LED

Uhla olushintshayo lwe-VF yesibani sesibani se-LED alucatshangelwa, okuholela ekusebenzeni okuphansi kwesibani, ngisho nomthwalo wamanani we-module yomthombo wokukhanya we-LED kumojula yomthombo wokukhanya we-LED engazinzile. Ngokuvamile yakhiwe ngochungechunge lwe-LED oluningi lwama-LED. ubuningi. I-VF ye-LED iyashintsha ngokushintsha kwezinga lokushisa. Ngokuvamile, ngesikhathi samanje, i-VF iba ngaphansi kwezinga lokushisa eliphezulu, futhi i-VF iba phezulu ekushiseni okuphansi. Ngakho-ke, i-voltage yokusebenza yokulayisha izibani ze-LED ekushiseni okuphezulu kuhambisana ne-VOL, futhi i-voltage yokulayisha isibani se-LED esebenza ngokushisa okuphansi ihambisana ne-VOH. Uma ukhetha idrayivu ye-LED, uhla lwe-voltage yomshayeli likhulu kune-VOL VOH. Uma intengo yemodyuli yomthombo wokukhanya we-LED ku-voltage enkulu yokuphuma iphansi kune-VOH, ukubekezelelana kwesibani ekushiseni okuphansi kungase kungafinyeleli amandla wangempela. Uma idrayivu ye-LED ekhethiwe eya ku-voltage ephansi ingaphezulu kwe-VOL, idrayivu ingase ishayelwe ngezinga lokushisa eliphezulu ezingeni lokushisa eliphezulu. Okukhiphayo kudlula ububanzi bokusebenza, umsebenzi awuzinzile, izibani zizokhanya, njll. Kodwa ukucatshangelwa kwezindleko nokusebenza kahle, awukwazi ukuphishekela ngobumpumputhe ububanzi be-ultra-wide volt volt range yomshayeli we-LED: ngenxa yokuthi i-voltage yomshayeli isebangeni elithile kuphela, ukusebenza kahle kwedrayivu kungukusebenza okuphezulu kakhulu. Ngemva kokweqa ububanzi, ukusebenza kahle kanye nesici samandla (PF) kuzowohloka. Ngesikhathi esifanayo, ukuklama uhla lwe-voltage okukhiphayo lomshayeli lubanzi kakhulu, okuzoholela ezindleko ezikhulayo nokusebenza kahle akukwazi ukwenziwa kahle. Uma ibhalansi yamandla nezidingo zokunciphisa zingacatshangelwa, amandla okuzisholo edrayivu ye-LED abhekisela kudatha elinganiswa ngendawo elinganiselwe kanye ne-voltage elinganiselwe. Uma kucatshangelwa ukuthi amakhasimende ahlukene azoba nezinhlelo zokusebenza ezihlukene, abahlinzeki abaningi bedrayivu ye-LED bazohlinzeka ngejika lokunciphisa amandla ekucacisweni komkhiqizo wabo siqu (umthwalo ovamile we-VS ijika lokwehla kwezinga lokushisa kanye nokulayisha ijika lokunciphisa i-VS input voltage)). Ijika elibomvu libonisa ukuthi uma intengo yemojuli yomthombo wokukhanya we-LED ingu-120VAC, ijika lokunciphisa amandla nezinga lokushisa elizungezile liyashintsha. Lapho izinga lokushisa le-ambient lingaphansi kuka-50 C, umshayeli uvumela imithwalo egcwele engu-100. Uma izinga lokushisa le-ambient liphezulu njengo-70 C, umshayeli anganciphisa umthwalo kuphela ku-60%. Lapho izinga lokushisa le-ambient lishintsha phakathi kuka-50-70 C, umthwalo wedrayivu wedrayivu uhambisana nezinga lokushisa elinezinga lokushisa elinokushisa nokukhuphuka kwezinga lokushisa kanye nokwehla komugqa. Ijika eliluhlaza okwesibhakabhaka libonisa ukuthi uma umshayeli we-LED engena ku-230VAC noma 277VAC, umthwalo wayo unejika lokunciphisa amandla ngokushintsha kwezinga lokushisa elizungezile. Ijika eliluhlaza okwesibhakabhaka lisho ukuthi uma umshayeli we-LED ingu-55 C, ijika lokunciphisa amandla okukhiphayo nezinguquko ku-voltage yokufaka iyashintsha. Lapho i-voltage yokufaka ingu-140VAC, umthwalo womshayeli uvumela imithwalo egcwele engu-100, futhi njengoba i-voltage yokufaka iyancipha; uma amandla okukhiphayo ehlala engashintshiwe, i-current input izokhuphuka, okuholela ekwandeni kokulahlekelwa kokugcina okokufaka, ukusebenza kahle kuncipha, izinga lokushisa ledivayisi lizokhuphuka, amaphuzu okushisa ngamanye angenzeka. Izindinganiso ezeqile zingase zibangele nokuhluleka kwemishini. Ngakho-ke, lapho i-voltage yokufaka ingaphansi kuka-140VAC, umthwalo ophumayo womshayeli udinga ukuncishiswa nge-voltage yokufaka kanye nokwehla komugqa. Ngemuva kokuqonda ijika eliphezulu lokunciphisa kanye nezidingo ezihambisanayo, lapho ukhetha intengo yemojula yomthombo wokukhanya we-LED, kufanele ucabangele ngokucophelela futhi ukhethe ngokuvumelana nezinga lokushisa langempela lendawo kanye nezimo zamandla kagesi okokufaka, futhi ushiye ngokufanele ukuze ushiye ukuncishiswa kokunciphisa. ukuncishiswa kwenani lokwehliswa.