Kungani ama-LED eFlicker nokuthi angakumisa kanjani
Ama-LED ayacwayiza lapho ukukhanya kwawo kushintshashintsha. Lokhu kuguquguquka kwenzeka ngoba ama-diode akho akhipha ukukhanya adizayinelwe ukuthi avuleke futhi avale ngesivinini esikhulu kakhulu.
Kunezizathu ezimbili eziyinhloko zokuthi kungani i-strobo ebonakalayo ingazwakala:
1. Imvamisa yokuphuma kwe-ripple iphansi. Ngaphansi kwezimo ezikhethekile (isibonelo, ukungena kungazelelwe endaweni yokukhanya usuka endaweni engakhanyi), uzophinde uzwe i-strobe izungeze u-100Hz. Izinga lohlaka lwe-movie endala luyi-24fps, kodwa uma imvamisa yokukhanya ingu-Flash frequency icishe ibe ngu-60Hz, futhi wonke umuntu akakwazi ukumelana nayo. Iziqapha zekhompyutha nama-TV asusa isistimu yezinga lozimele endala futhi kulula ukuyiqonda.
2. I-voltage ye-ripple ephumayo noma i-ripple yamanje engu-100Hz, lapho i-voltage ye-ripple ingaphansi kuka-5%, ayizwakali njenge-stroboscopic. Ngalesi sikhathi, ukugeleza kwamanzi kungase kube kuncane kakhulu kuno-5%, futhi ukuqaliswa kunzima ngandlela-thile. Izinga lozimele weselula noma ikhamera ngokuvamile licishe libe ngu-30, futhi ikhamera enyakazayo enesivinini esiphezulu ingafinyelela ku-400fps. Ukudubula ngokukhanya kwe-strobe, uma imvamisa ye-strobe ingakwazi ukudlula izikhathi ezi-4 izinga lohlaka olubekwe idivayisi yokudubula, uzobona ukukhanya kukhanya noma kuthuthumela kudivayisi yokudubula, futhi umphumela wokudubula nawo uyafana. Ngakho-ke, lapho udubula isibonisi semonitha ye-CRT endala, uvame ukubona ibha ihambela phezulu. I-stroboscopic ephansi ye-frequency, nakuba singakwazi ukuyizwa ngokushesha, kodwa ekukhanyeni okunjalo kwesikhathi eside, abantu bakhathele kakhulu, kulula ukuthola i-myopia nezinye izifo zamehlo.
Njengamanje, ukunikezwa kwamandla kwe-LED kungahlangabezana nezidingo ze-no stroboscopic:
1. Khulisa i-electrolytic capacitor ephumayo
2. Ukwamukela uhlelo lwe-PFC lokugcwalisa isigodi
3. Ukwamukela uhlelo olunezigaba ezimbili (AC/DC, DC/DC)
Uhlelo lokuqala "lwandisa ukuphuma kwe-electrolytic capacitor", lolu hlelo lungakwazi ukusebenzisa i-electrolytic capacitor ukuze lumunce ingxenye ye-AC ripple, kodwa okuhlangenwe nakho kwangempela kusitshela ukuthi lapho ukulawulwa kwe-ripple kungaphakathi kwebanga elithile (10%), kunzima ukuyinciphisa, ngaphandle uma i-electrolytic capacitor yengezwe ezindlekweni ngaphandle kwezindleko.
Indlela yesibili ukusebenzisa uhlelo lwe-PFC olugcwele isigodi, oluphinde lube yindlela yokwelapha evamile. Izikimu zokuhlukanisa zingasebenzisa i-core noma i-IWATT (isixazululo sakuqala, esesiqedwe kakhulu manje). Ama-capacitor amabili amakhulu nama-diode amathathu asetshenziselwa ukulungiswa kwezinto zamandla. Ngenxa yokuthi kune-electrolytic capacitor enkulu ngemuva kwebhuloho elilungisa kabusha, i-AC ripple iyamuntshwa, futhi eyamanje nge-inductor noma i-transformer eya kwesesibili yi-DC.
Indlela yesithathu iwukusebenzisa isikimu esinezigaba ezimbili. Ngokungeza i-DC/DC kumandla kagesi akhona angawodwa wenkampani yethu, umthelela we-AC ripple ungaqedwa ngokuphelele. Amapharamitha kagesi nawo angahlangabezana ngokugcwele nezindinganiso zesitifiketi. Nokho, lesi sixazululo sinokunyuka okuthile kwezindleko. Idinga i-chip yokuphatha amandla eyengeziwe kanye namasekhethi athile azungezile, futhi izindleko eziphelele zizokhuphuka.