Thinta ukukhanya kwetafula le-LED elifiphalisayo
Isimiso se-LED dimmer
I-LED dimmer iyingxenye ebalulekile yamalambu esimanje, iwukuba ngokulungisa usayizi we-voltage yokuphakela amandla, ukulungisa ukukhanya kwezibani ze-LED. Ngokuthuthuka okuqhubekayo kanye nokuthuthukiswa kobuchwepheshe bokukhanyisa kwe-LED, izibani ze-LED seziphenduke imikhiqizo evamile emkhakheni wokukhanyisa kwangaphakathi nangaphandle, ngakho-ke ukusetshenziswa kwezibani ze-LED kuye kwabeka phambili izidingo eziphakeme. Lesi sihloko sizokwethula isimiso se-LED dimmer nokuthi sisebenza kanjani ngokuhambisana nezibani ze-LED ukuze uqonde kangcono futhi usebenzise le divayisi.
Umgomo we-LED dimmer
Umgomo we-LED dimmer ukushintsha ukukhanya kokuphumayo ngokulungisa i-voltage ye-DC yesibani yesibani. Njengoba isibani se-LED siwumthombo wokukhanya wamanje osebenza ngamandla, kuyadingeka ukushintsha i-voltage yamandla akhona akhona ngesikhathi sokusetshenziswa ukulawula ukukhanya komthombo wokukhanya we-LED.
Umjikelezo weIzibani ze-LEDihlanganisa izingxenye ezintathu eziyinhloko, okungukuthi ukunikezwa kwamandla, umthombo wamanje ongashintshi kanye nomthombo wokukhanya we-LED ngokwawo. Ukunikezwa kwamandla kunikeza i-voltage ehambisanayo yokushayela umthombo wokukhanya we-LED, kuyilapho umthombo wamanje oqhubekayo uqinisekisa ukuzinza komthombo wokukhanya we-LED ngokugcina okwamanje kugeleza ku-LED kungashintshiwe. Ngakho-ke, umsebenzi oyinhloko we-dimmer ukulungisa amandla kagesi, okuthinta ukukhanya komthombo wokukhanya we-LED. I-Dimmer ngokuvamile isebenzisa izindlela ezintathu zokufinyelela ukulawulwa kwamandla kagesi we-LED: ukuguquguquka kwe-PWM, ukuguquguquka kwamandla kagesi kanye nokuguquguquka kwamanje okungaguquki.
1. Ukushintshashintsha kwe-PWM
I-PWM modulation ingenye yezindlela ezivame ukusetshenziswa kakhulu zokulawula ukukhanya kwe-LED. Le modi yokulungisa ishintsha i-voltage yokuphakela amandla ngefrikhwensi ethile futhi ilawula isilinganiso somsebenzi we-voltage yokuphakela amandla kumjikelezo ngamunye, ngaleyo ndlela ithinte ukukhanya kwesibani se-LED. Ukufiphalisa okunamandla kungafinyelelwa ngokushintshashintsha kwe-PWM, kanye nokuhlangabezana nezidingo zokukhanyisa ezihlukene.
2. Imodi yokusebenza ngokubambisana phakathiIsibani se-LED nesibani se-LED
Imodi yokusebenza ngokubambisana phakathi kwe-LED dimmer nokukhanya kwe-LED iwukubona ukulungiswa kokukhanya kokukhanya kwe-LED ngokusebenzisana. Okulandelayo isingeniso esifushane sokusebenzelana phakathi kwe-LED dimmer nesibani se-LED.
1. Ukushintshashintsha kwe-PWM
Kumodi yokushintshashintsha ye-PWM, ukukhanya kokukhanya kwe-LED kulawulwa ngokulungisa umjikelezo womsebenzi wevolthi yokuphakelwa kwamandla. I-dimmer idlulisela isignali yokulungisa ekukhanyeni kwe-LED, futhi ukukhanya kwe-LED kukhipha ukukhanya okuhlukile ngokuya ngokugqama okuhlukile kwesiginali yokulungisa. Isignali yokulungisa phakathi kwakho kokubili ngokuvamile isekelwe kusignali yedijithali, ekwazi ukubona isilawuli kude kanye nokufiphala.
2. Ukuguqulwa kwamandla kagesi
Kumodi yokuguqula i-voltage, i-LED dimmer ilawula isibani se-LED ngokushayela ukuphuma kwamandla esibani se-LED.
Ilambu Ledeskithophu Le-LED Elishajwa kabusha—Umthunzi Owenziwe Ngayo
INCAZELO EMFUSHANE:
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