Ko e Mana ʻo e Maama LED Tunable

Kuo mahulu hake ʻa e maama LED ʻi onoponi ʻi he ngaue faingofua ʻo e mama. ʻI he ʻaho ni, ʻoku ʻikai ngata pe ʻi heʻetau lava ʻo liliu ʻa e ulo ʻo ha maama ka ko e lanu pe "mafana" ʻo e maama ʻoku ne ʻomai. Kuo liliu ʻe he malava ko ʻeni ke fakaleleiʻi fakatouʻosi ʻa e ngingila mo e mafana ʻo e lanu, ʻo fakaʻata ʻa e ngaahi ʻatakai longomoʻui ʻe lava ke liliu mei ha maama mokomoko mo mokomoko ki he ngaue ki ha maama fakanonga mo mafana ki he malolo efiafi. Ka ʻoku anga fefe ʻa e ngaue ʻa e liliu ngali faingofua ko ʻeni? ʻOku ʻi lalo ʻi he funga ʻo ha foʻi ʻuhila LED pe naunau ʻoku ʻi ai ha fakatahaʻi fakaʻofoʻofa ʻo e fisiki, meʻa fakaʻilekitulonika, mo e saienisi ʻo e naunau. Ko e ngaahi tefitoʻi moʻoni ʻoku ne puleʻi ʻa e ngaahi liliu ko ʻeni—ko hono tuifio ʻo e LED spectra kehekehe ki he mafana ʻo e lanu mo hono fakaʻaongaʻi ʻo e pulse width modulation (PWM) ki he ngingila—ko e ngaahi ki ia ke mahino ʻa e versatility ʻo e maama ʻo onoponi. ʻE fakamatalaʻi ʻe he fakahinohino ko ʻeni ʻa e ngaahi fakakaukau ʻo e mafana ʻo e lanu, fakafekauʻaki ʻa e mafana ʻo e lanu (CCT), mo e fakaʻilekitulonika ʻo e PWM dimming ʻi ha founga ʻoku fakatou maʻu mo tonu fakatekinikale.

Ko e ha ʻa e mafana ʻo e lanu ʻo e LED pea ʻoku anga fefe hono liliu?

Ko e mafana ʻo e lanu ko ha founga ia ke fakamatalaʻi ʻaki ʻa e lanu ʻo e maama ʻoku ʻasi mai mei ha maʻuʻanga tokoni. ʻOku ʻikai ʻuhinga ia ki he vela fakaesino ʻo ha mama, ka ko e mafana pe mokomoko ʻo e mama. ʻOku fakatefito ʻa e tefitoʻi moʻoni ʻi he fisiki ʻo ha meʻa lelei ʻoku ui ko e "radiator ʻo e sino ʻuliʻuli." ʻI he taimi ʻoku vela ai ha sino ʻuliʻuli, ʻoku ulo ia ʻaki ha lanu ʻoku liliu ʻi he mafana ʻo e ʻea. ʻI he mafana maʻulalo ange, ʻoku ne tuku mai ha maama lanu moli lanu kulokula mafana. ʻI he fakautuutu ʻa e mafana ʻo e ʻea, ʻoku liliu leva ʻa e lanu ki he hinehina "mokomoko" pea iku ki he lanu pulu hinehina. ʻOku fua ʻa e lanu ko ʻeni ʻi he ngaahi ʻiuniti ʻoku ui ko e Kelvin (K). ʻOku maʻulalo ʻaupito ʻa e mafana ʻo e lanu ʻo e ulo ʻo e teʻelango, fakafuofua ki he 1800K (lanu moli mafana). Ko e foʻi ʻuhila angamaheni ʻoku fakafuofua ki he 2700K-3000K (hinehina mafana). ʻOku maʻolunga ange ʻa e maama ʻo e hoʻataa, fakafuofua ki he 5500K-6500K (mokomoko hinehina/lanu pulu). ʻI he mamani ʻo e LEDs, ʻoku ʻikai fekauʻaki hono maʻu ha mafana ʻo e lanu pau mo hono fakamafanaʻi ʻo ha filo. Ka ʻoku fekauʻaki ia mo hono fakatahaʻi ʻo e mama mei he ngaahi maʻuʻanga tokoni kehekehe. Ko e founga angamaheni taha ki hono faʻu ʻo e LED hinehina ko hono fakaʻaongaʻi ha LED lanu pulu ʻoku coated ʻaki ha phosphor. ʻOku hanga ʻe he maama lanu pulu ʻo fakaʻaiʻai ʻa e phosphor, ʻa ia ʻoku ne tuku mai leva ʻa e maama lanu engeenga, pea ko hono fakatahaʻi ʻo e maama lanu pulu mo engeenga ʻoku ne fakatupu ʻa e hinehina. Ke liliu ʻa e mafana ʻo e lanu, ʻe lava ke ʻi ai ha ngaahi seti lahi ʻo e LEDs: ko e seti ʻe taha ʻoku ʻi ai ha phosphor "mafana" (ʻoku ʻomi ai ha maama lanu kulokula-engeenga) pea ko e seti ʻe taha ʻoku ʻi ai ha phosphor "mokomoko" (ʻoku maʻu ai ha maama lanu pulu ange). ʻI hono fakatonutonu tauʻataina ʻa e ngingila ʻo e LED mafana mo mokomoko pea tuifio ʻenau mama, te tau lava ʻo aʻusia ha faʻahinga mafana ʻo e lanu ʻi he vahaʻa ʻo e ngaahi meʻa ko ia. Fakalahi ʻa e malohi ki he LED mafana, pea ʻoku mafana ange ʻa e maama fakalukufua; fakalahi ʻa e LEDs mokomoko, pea ʻoku hoko ia ʻo mokomoko ange. Ko e tefitoʻi moʻoni mahuʻinga ʻeni ʻo e maama LED ʻoku tuʻu hinehina pe CCT.

Ko e ha ʻa e radiator ʻo e sino ʻuliʻuli mo hono fatongia ʻi hono fakaʻuhingaʻi ʻo e mafana ʻo e lanu?

ʻOku mahuʻinga ʻa e foʻi fakakaukau ʻo e radiator ʻuliʻuli ki he mahino ʻo e mafana ʻo e lanu. ʻI he fisiki, ko e sino ʻuliʻuli ko ha meʻa fakaʻatamai ia ʻoku ne mimisi ʻa e radiation electromagnet kotoa pe ʻoku to ki ai, ʻo ʻikai ha taha. ʻI he taimi ʻoku mafana ai ʻa e meʻa absorber haohaoa ko ʻeni, ʻoku hoko ia ko ha emitter haohaoa ʻo e radiation. Ko e tuʻunga ʻo e maama ʻoku ne tuku mai ʻoku hokohoko mo molemole, pea ko hono lanu ʻoku makatuʻunga pe ia ʻi hono mafana ʻo e ʻea. ʻI he 3000K, ʻoku ulo ha sino ʻuliʻuli ʻaki ha maama mafana mo lanu engeenga. ʻI he 5000K, ko hono mama ʻoku hinehina tuʻu ʻi tuʻa, ʻo tatau mo e laʻaa hoʻataa. ʻI he 6500K mo ʻolunga, ʻoku lanu pulu makehe ʻa e mama. Koeʻuhi ʻoku liliu ʻa e lanu ʻo e sino ʻuliʻuli ʻi ha founga ʻoku mahino ki he mafana ʻo e ʻea, ʻoku ne ʻomi ha meʻafua haohaoa ki hono fuatautau ʻo e lanu ʻo e ngaahi maʻuʻanga mama. ʻI he taimi ʻoku tau pehe ai ʻoku ʻi ai ha mafana ʻo e lanu ʻo e foʻi ʻuhila ko e 3000K, ʻoku tau ʻuhinga ki he lanu tatau pe ʻa e maama mo ha sino ʻuliʻuli kuo fakamafanaʻi ki he 3000 Kelvin. ʻI he ngaahi taʻu lahi, naʻe meimei fakaʻaongaʻi lelei ʻa e foʻi fakakaukau ko ʻeni ki he ngaahi maama incandescent mo halogen, ʻa ia ko e ngaahi radiator mafana pea ʻoku ne faʻu ha tuʻunga hokohoko ʻoku meimei tatau mo ha sino ʻuliʻuli. Ko honau chromaticity coordinates (ko e fakaʻuhinga totonu ʻo honau lanu ʻi ha sati) ʻoku meimei tatau pe ia mo e locus ʻo e sino ʻuliʻuli—ʻa e laine ʻi ha fakatata chromaticity ʻoku ne fakatotoloʻi ʻa e lanu ʻo ha sino ʻuliʻuli ʻi he mafana kehekehe.

Ko e ha ʻa e fakafekauʻaki ʻo e mafana ʻo e lanu (CCT) pea ko e ha ʻoku fakaʻaongaʻi ai ia ki he LEDs?

ʻOku toe faingataʻa ange ʻa e tuʻunga ʻi he ngaahi maʻuʻanga maama ʻoku ʻikai ko ha radiator vela, hange ko e maama fluorescent pea mahuʻinga taha, LEDs. ʻOku ʻomi ʻe he LED ʻa e maama ʻo fakafou ʻi he electroluminescence, kae ʻikai ko e vela. ʻOku ʻikai ko ha piko molemole mo hokohoko ʻo hange ko e sino ʻuliʻuli; ʻOku faʻa fakatahaʻi ia ʻo ha tumutumu lanu pulu masila mo ha phosphor lanu engeenga lahi ange. Koeʻuhi ko e meʻa ni, ʻoku ʻikai faʻa to tonu ʻa e chromaticity coordinates ʻo ha LED ʻi he locus ʻo e sino ʻuliʻuli. ʻE anga fefe haʻatau fakamatalaʻi hono lanu? Ko e feituʻu ʻeni ʻoku hoko mai ai ʻa e Correlated Color Temperature (CCT). Ko e CCT ko e mafana ia ʻo e radiator ʻuliʻuli ʻa ia ʻoku meimei tatau hono lanu mo e maʻuʻanga maama ʻoku fehuʻia. Ko ha tuʻunga ʻulungaanga mahuʻinga ia ʻoku "feʻunga lelei taha". ʻI ha fakatata chromaticity, ʻoku ke maʻu ai ʻa e poini ʻi he locus ʻo e sino ʻuliʻuli ʻoku ofi taha ki he ngaahi fakafekauʻaki chromaticity ʻo e LED, pea ko e mafana ko ia ko hono CCT. Hange ko ʻeni, ʻe meimei tatau ʻaupito ʻa e lanu ʻo ha LED mo ha CCT ʻo e 3000K ki ha foʻi ʻuhila 3000K, neongo ʻoku kehe ʻaupito ʻa e tuʻunga ʻo e tuʻunga ʻo e ʻuhila. Ko e ʻuhinga ʻeni ʻoku hoko ai ʻa e CCT ko e meʻafua angamaheni ʻoku fakaʻaongaʻi ki he meimei kotoa ʻo e maama LED hinehina he ʻaho ni. ʻOku ne ʻomi ha fika faingofua mo intuitive ʻoku ne fakaʻata ʻa e kau fakatau mo e kau tisaini ke fakafehoanaki mo fili ʻa e "mafana" pe "mokomoko" ʻoku fie maʻu ʻo e mama mei he ngaahi kautaha mo e tekinolosia kehekehe, neongo kapau ʻoku kehekehe ʻa e ngaahi faʻunga ʻo e spectral. ʻOku ʻomi ʻe he CCT maʻulalo ange (2700K-3000K) ha ongo mafana, fakafiemalie, lolotonga ia ʻoku ʻomi ʻe he CCT maʻolunga ange (4000K-6500K) ha ʻatakai maʻa, tokanga mo longomoʻui.

ʻOku liliu fefe ʻa e maama ʻo e LED?

ʻOku ngali faingofua hono liliu ʻo e ngingila ʻo ha LED: holoki pe ʻa e ʻuhila, ʻikai ko ia? Neongo ko e tefitoʻi fakakaukau ia, ka ʻoku mahuʻinga ʻa e founga ʻoku fakaʻaongaʻi ki hono tauhi ʻo e tuʻunga lelei mo e lelei ʻo e lanu. Ko e founga angamaheni mo ola lelei taha ki hono fakasiʻisiʻi ʻo e LEDs ʻoku ui ia ko e Pulse Width Modulation, pe PWM. Ko e PWM ko ha founga ia ki hono puleʻi ʻo e ʻavalisi ʻo e malohi ʻoku ʻoatu ki ha LED ʻo ʻikai liliu ʻa e voltage pe tuʻunga lolotonga ʻoku ngaue ai. ʻOku ngaue ia ʻo hange ha meʻa kamosi fakaʻilekitulonika vave ʻaupito. ʻOku fakamoʻui mo tamateʻi ʻe he PWM ʻa e LED ʻi ha tuʻo lahi ʻoku fuʻu maʻolunga ʻo ʻikai lava ke fakatokangaʻi ʻe he mata ʻo e tangata ʻa e kemo. ʻOku fakapapauʻi ʻe he ratio ʻo e taimi "on" ki he taimi "mate" ʻa e maama ʻoku ongoʻi. ʻOku ʻiloa ʻa e fika ko ʻeni ko e siakale ʻo e ngaue. ʻOku ʻuhinga ʻa e 100% duty cycle ʻoku fakamoʻui maʻu pe ʻa e LED, pea ʻoku ʻasi ia ʻi hono maama lahi taha. ʻOku ʻuhinga ʻa e 50% duty cycle ʻoku vaeua ʻa e taimi mo e vaeua ʻo e taimi; ʻoku fakatahaʻi ʻe hotau mata ʻa e ta vave ko ʻeni pea ʻiloʻi ʻoku vaeua hono ngingila. ʻOku hanga ʻe he siakale ʻo e fatongia ʻe 10% ʻo ʻai ke ngali nenefu ʻaupito. ʻOku fuʻu lelei ʻaupito ʻa e founga ko ʻeni koeʻuhi ko e taimi ʻoku ulo ai ʻa e LED, ʻoku lele ia ʻi hono ʻau lelei taha, pea ʻi he taimi ʻoku mate ai, ʻoku ʻikai ke ne maʻu ha malohi. ʻOku fuʻu vave ʻaupito ʻa e fetongi ʻo e on/off (faʻa tuʻo lauiafe ʻi he sekoni) pea ʻoku ʻikai lava ke fakatokangaʻi, ʻo ʻomi ai ha aʻusia fakapoʻuli lelei ʻi he taimi ʻoku fakahoko totonu ai.

ʻOku ngaue fefe ʻa e PWM dimming ʻi he tuʻunga ʻo e circuit?

Ko hono faʻu ʻo ha fakaʻilonga PWM ko ha ngaue mahuʻinga ia ʻi he ngaahi meʻa fakaʻilekitulonika, ʻoku faʻa tokangaʻi ʻe ha microcontroller pe IC fakaʻuli ʻi loto ʻi he maʻuʻanga ʻuhila LED. ʻOku faʻa fakatefito ʻa e uho ʻo ha misini ʻuhila PWM faingofua ʻi ha circuito fakafehoanaki ʻoku ne fakafehoanaki ʻa e ongo fakaʻilonga ʻe ua: ko ha peau tapatolu pe tapatolu tuʻumaʻu mo ha voltage ʻoku feliliuaki (ko e tuʻunga fakapoʻuli ʻoku ke fokotuʻu). Ko e output ʻo e comparator ko ha peau tapafa ʻoku "maʻolunga" (fakamoʻui ʻa e LED) ʻi he taimi ʻoku maʻulalo ai ʻa e peau nifo ʻi lalo ʻi he voltage ʻoku puleʻi, pea "maʻulalo" (tamateʻi ʻa e LED) ʻi he taimi ʻoku ʻi ʻolunga. ʻOku liliu ʻa e maolahi ʻo e pulses "maʻolunga" ko ʻeni ʻi he voltage ʻoku puleʻi, ko ia ai ʻa e hingoa ʻo e Pulse Width Modulation. ʻOku fakaʻaongaʻi ʻa e fakaʻilonga PWM ke fakamoʻui mo tamateʻi ha transistor (hange ko ha MOSFET). ʻOku fokotuʻu hokohoko ʻa e transistor ko ʻeni mo e afo LED. ʻI he taimi ʻoku maʻolunga ai ʻa e fakaʻilonga PWM, ʻoku tataki ʻe he transistor, pea ʻoku tafe mai ʻa e ʻau ʻi he LEDs, ʻo fakamoʻui kinautolu. ʻI he taimi ʻoku maʻulalo ai ʻa e fakaʻilonga, ʻoku tuʻusi ʻa e transistor, taʻofi ʻa e lolotonga pea tamateʻi ʻa e LEDs. ʻOku fili fakalelei ʻa e tuʻo lahi ʻo e feliliuaki ko ʻeni ke maʻolunga ange ʻi he feituʻu ʻe lava ke ʻiloʻi ʻe he mata ʻo e tangata, angamaheni ʻi ʻolunga ʻi he 200 Hz ki he lahi taha ʻo e ngaahi polokalama, pea faʻa ʻi he kHz ki he maama maʻolunga ke fakapapauʻi ʻoku ʻikai ha kemo ʻoku ʻasi mai. ʻOku liliu ʻe he dimming control ʻoku ke fengaueʻaki mo ia—ko ha knob, slider, pe smart home app—ʻa e siakale ʻo e ngaue ʻo e fakaʻilonga PWM ko ʻeni.

Ko e ha ʻoku saiʻia ange ai ʻa e PWM ʻi hono fakasiʻisiʻi ʻo e lolotonga ki he dimming?

Ko e tefitoʻi ʻuhinga ʻoku hoko ai ʻa e PWM ko e founga dimming lahi taha ki he LEDs ko e tuʻunga tatau ʻo e lanu. ʻOku makatuʻunga ʻa e mafana ʻo e lanu (CCT) ʻo ha LED chip ʻi he lolotonga ʻoku tafe mai ai. Kapau te ke fakasiʻisiʻi pe ʻa e ʻau fakahangatonu (DC) ke fakapoipoiʻi ʻa e LED, ʻe lava ke liliu ʻa e lanu ʻo e mama. Hange ko ʻeni, ʻe lava ke kiʻi lanu pingiki pe lanu mata ʻa e LED hinehina ʻi he maʻulalo ange ʻa e ʻau. ʻOku ʻikai tali ʻeni ʻi he lahi taha ʻo e ngaahi polokalama ʻo e mama, tautautefito ki he taimi ʻoku fie maʻu ai ʻa e lanu hinehina pe lanu maʻolunga. ʻI hono fakaʻaongaʻi ʻo e PWM, ʻoku ngaue maʻu pe ʻa e LED ʻi hono palani lolotonga ʻi he taimi ʻoku fakamoʻui ai. ʻOku fakapapauʻi heni ʻoku tuʻu maʻu mo moʻoni ʻa e lanu ʻo e mama ʻi he kotoa ʻo e dimming. Tatau ai pe pe ʻoku ngingila ʻa e mama ʻi he 100% pe ngingila ʻe 10%, ko e pulses "on" ʻoku ʻi he kakato mo e lolotonga totonu, ko ia ʻoku ʻikai liliu ʻa e mafana ʻo e lanu. Ko e loloa pe ʻo e pulses ʻoku liliu. ʻOku ʻai ʻe he meʻa ni ʻa e PWM ko e founga lelei taha ia ki hono tauhi ʻo e mapuleʻi totonu ʻo e lanu. Ko e lelei ʻe taha ko e lavameʻa. ʻE lava ke faʻa iku ʻa e fakasiʻisiʻi ʻo e lolotonga ki he mole ʻo e ivi ʻi he circuit ʻo e fakaʻuli. ʻOku fakasiʻisiʻi ʻe he PWM, ʻi hono fakamoʻui mo tamateʻi kakato ʻa e LEDs, ʻa e ngaahi mole ko ʻeni pea tauhi ʻa e tuʻunga lelei fakalukufua ʻo e polokalama, ʻa ia ko ha tefitoʻi talaʻofa ia ʻo e tekinolosia LED.

Ko hono fakatahaʻi ʻo e mafana ʻo e lanu mo e liliu ʻo e ngingila: Tunable White Lighting

ʻOku ʻiloʻi ʻa e malohi moʻoni ʻo e maama LED fakaonoponi ʻi he taimi ʻoku tau fakatahaʻi ai ʻa e adjustable CCT mo e PWM dimming. Ko e meʻa ʻeni ʻoku ne fakaʻata ʻa e ngaahi polokalama "tunable white" pe "human-centric lighting". ʻOku ʻi ai ha ongo afo tauʻataina ʻe ua ʻo e LEDs: ko e taha ʻoku mafana ʻa e CCT (e.g., 2700K) mo e taha ʻoku ʻi ai ha CCT mokomoko (e.g., 6500K). ʻOku ʻi ai foki mo ha ongo fakaʻuli PWM tauʻataina ʻe ua. ʻOku puleʻi ʻe he fakaʻuli ʻe taha ʻa e ngingila ʻo e LED mafana, pea puleʻi ʻe he fakaʻuli ʻe taha ʻa e ngingila ʻo e LED mokomoko. ʻOku ʻoatu ʻe he central control system—ʻa ia ʻe lava ke hoko ko ha kiʻi meʻa fakaʻofoʻofa ʻe ua pe ko ha polokalama fakaʻotometiki ʻo e fale—ha ongo fakaʻilonga PWM kehekehe. ʻI hono liliu ʻa e siakale ʻo e fatongia ʻo e ongo fakaʻilonga ko ʻeni, te ke lava ʻo fokotuʻu tauʻataina ʻa e malohi ʻo e afo lanu takitaha. Ke maʻu ha maama mafana mo poipoi, te ke lava ʻo ʻave ha fakaʻilonga PWM malohi ki he LED mafana pea vaivai ʻaupito ki he LED mokomoko. Ke maʻu ha maama ngingila, mokomoko, mo longomoʻui, te ke fai ʻa e meʻa ʻoku fehangahangai. Ki ha hinehina ʻoku ʻikai kau ki ai ʻi he ngingila lotoloto, te ke potupotutatau ʻa e ongo fakaʻilonga. ʻOku fakaʻata ʻe he founga ko ʻeni ʻa e liliu hokohoko ʻi he CCT mo e maama kotoa, ʻo faʻu ha ngaahi ʻatakai ʻo e maama ʻe lava ke faʻifaʻitaki ki he fakalakalaka fakanatula ʻo e maama mei he mafoa ʻa e ata ki he poʻuli, poupouʻi ʻa e ngaahi taimi ʻo e circadian ʻa e tangata mo fakaleleiʻi ʻa e fiemalie, ngaue, mo e lelei.

Ngaahi Tefitoʻi Fakakaukau ʻi he LED Color and Brightness Control

ʻOku fakamatalaʻi fakanounou ʻe he tepile ko ʻeni ʻa e ngaahi tefitoʻi moʻoni mahuʻinga ʻoku aleaʻi ʻi he fakahinohino ko ʻeni.

Ko hono fakaʻosi, ko e malava ko ia ke liliu fakatouʻosi ʻa e mafana ʻo e lanu mo e ngingila ʻo e maama LED ko ha fengaueʻaki lelei ia ʻo e palani fakaʻata mo e puleʻi fakaʻilekitulonika. ʻOku fakaʻata kitautolu ʻe he tefitoʻi moʻoni ʻo hono tuifio ʻo e ngaahi maʻuʻanga maama mafana mo mokomoko ke tau fononga ʻi he CCT spectrum, lolotonga ia ʻoku ʻomi ʻe he tonu ʻo e PWM dimming kiate kitautolu ʻa e flicker-free, color-stable control over intensity. ʻOku hanga ʻe he ngaahi tekinolosia ko ʻeni ʻo fakaivia kitautolu ke tau faʻu ha ngaahi ʻatakai ʻo e maama ʻoku ʻikai ngata pe ʻi he ivi lelei ka ʻoku ne toe tali lelei ʻetau ngaahi fie maʻu, ʻo fakaleleiʻi ʻetau fiemalie, ngaue, mo e fehokotaki mo e mamani fakanatula.

Ngaahi Fehuʻi ʻOku Faʻa ʻEke Fekauʻaki mo e Lanu mo e Ngingila ʻo e LED

ʻE lava nai ke u fakamolemoʻi ha foʻi ʻuhila LED?

ʻIkai, ʻoku ʻikai ke dimmable ʻa e ngaahi foʻi ʻuhila LED kotoa pe. Kuo pau ke ke fakatau ha ngaahi foʻi ʻuhila ʻoku fakahingoa ko e "dimmable." ʻE lava ke fakatupu ʻe hono fakaʻaongaʻi ʻo ha foʻi ʻuhila LED ʻoku ʻikai ke lava ʻo dimmable ʻi ha circuit dimmer ʻo fakatupu ʻa e kemo, buzzing, pea ʻe lava ke maumauʻi ʻa e foʻi ʻuhila pe ko e dimmer. ʻIkai ngata ai, ʻoku faʻa ngaue lelei taha ʻa e dimmable LEDs mo e ngaahi meʻa kamosi LED ʻoku fenapasi mo ia, he ʻoku ʻikai ngaue lelei ʻa e ngaahi dimmer motuʻa ange naʻe faʻu ki he ngaahi foʻi ʻuhila incandescent.

Ko e ha ʻa e mafana lelei taha ʻo e lanu ki ha loki mohe?

Ki ha loki mohe, ʻoku faʻa fokotuʻu atu ha mafana ʻo e lanu ke fakaʻaiʻai ʻa e malolo mo teuteuʻi ʻa e sino ki he mohe. Kumi ʻa e LEDs mo e CCT ʻo e 2700K ki he 3000K. ʻOku faʻifaʻitaki ʻe he maama mafana mo engeenga ko ʻeni ʻa e ulo ʻo ha afi pe ngaahi foʻi ʻuhila angamaheni pea tokoni ke faʻu ha ʻatakai fakafiemalie mo nonga. ʻOku fakaʻaongaʻi ʻe he ngaahi polokalama maʻolunga ʻe niʻihi ʻa e maama hinehina ke liliu mei he maama mokomoko ange ʻi he pongipongi ki he maama mafana ʻi he poʻuli.

ʻOku kovi ʻa e PWM dimming ki ho mata?

ʻOku ʻikai fakatokangaʻi ʻe he mata ʻo e tangata ʻa e PWM dimming, ʻoku ngaue ʻi he tuʻunga lahi ʻi ʻolunga ʻi he 1-2 kHz, pea ʻoku pehe ʻoku malu mo fakafiemalie. Neongo ia, ʻe lava ke fakatupu ʻe he PWM maʻulalo (ʻi lalo ʻi he 200 Hz) ʻa e kemo ʻoku ʻasi mai, ʻa ia ʻe lava ke iku ki he ongosia ʻa e mata, langa ʻulu, mo e taʻefiemalie ki ha niʻihi fakafoʻituitui. ʻI he taimi ʻoku fili ai ʻa e dimmable LEDs, fili ʻa e ngaahi kautaha falalaʻanga ʻoku nau fakamahinoʻi ʻa e "flicker-free" dimming ke fakapapauʻi ʻoku maʻolunga ʻa e tuʻo lahi ʻo e PWM mo ha aʻusia fakaʻofoʻofa ʻi he sio.