Ko e ʻuhinga ʻoku hoko ai ʻa e falalaʻanga ʻo e fakaʻuli LED ko e mafu ʻo ha maama lelei

ʻOku lelei tatau pe ʻa e maama LED mo hono fakaʻuli. Neongo ʻoku faʻa maʻu ʻe he LED chips ʻa e langilangi ʻi heʻenau moʻui loloa mo e ivi lelei, ko e fakaʻuli—ko ha konga faingataʻa ʻo e ngaahi meʻa fakaʻilekitulonika ʻuhila—ʻoku ne ʻai ke nau ngaue. Ko e tefitoʻi ngaue ʻa e fakaʻuli LED ke liliu ʻa e voltage AC ʻoku hu mai mei he mains ki ha maʻuʻanga tokoni DC ʻoku puleʻi. ʻOku ʻikai tatau ia mo ha maʻuʻanga voltage faingofua, ʻe lava ke kehekehe ʻa e output voltage ʻo ha maʻuʻanga tokoni lolotonga ke tatau mo e to ki muʻa ʻo e voltage (Vf) ʻo e kavenga LED, ʻo fakapapauʻi ʻoku tafe maʻu pe ʻa e lolotonga ʻi he LEDs ʻo tatau ai pe pe ko e ha ʻa e fetoʻaki ʻo e mafana ʻo e ʻea pe fanga kiʻi liliu iiki ʻi he LEDs. ʻI heʻene hoko ko ha konga mahuʻinga, ʻoku uesia fakahangatonu ʻe he tuʻunga lelei mo e palani ʻo e fakaʻuli LED ʻa e falalaʻanga, tuʻunga taʻeueʻia, mo e moʻui ʻo e maama kotoa. ʻOku ʻuhinga ʻa e maumau ʻa e fakaʻuli ki he maumau ʻa e mama, neongo ʻoku kei lava pe ʻa e LED kotoa pe ʻo fakamaama lelei. Meʻapango, ko e maumau ʻa e fakaʻuli ko e taha ia ʻo e ngaahi ʻuhinga angamaheni taha ʻo e maumau ʻa e maama LED. ʻOku ʻikai faʻa tupu ʻa e ngaahi taʻelavameʻa ko ʻeni mei ha meʻa fakatuʻutamaki pe ʻe taha, ka mei hono fakatahaʻi ʻo e ngaahi taʻetokangaʻi ʻi he fokotuʻutuʻu, ngaahi fehalaaki ʻi hono fakaʻaongaʻi, mo e ngaahi faingataʻa ʻo e ʻatakai. ʻOku fakaʻaongaʻi ʻe he fakamatala ko ʻeni ʻa e ʻanalaiso fakatekinikale mo e aʻusia moʻoni ʻi hono fakaʻaongaʻi ʻo e mamani ke vakaiʻi ʻa e ngaahi ʻuhinga angamaheni ʻe hongofulu ʻoku ʻikai lava ai ʻa e fakaʻuli LED, ʻo ʻomi ha ngaahi fakakaukau ʻe lava ke tokoni ki he kau ʻenisinia, kau fokotuʻutuʻu, mo e specifiers ke fakaʻehiʻehi mei he ngaahi tauhele ko ʻeni pea fakapapauʻi ʻoku tolonga ange mo falalaʻanga ange ʻa e ngaahi maama ʻoku tuʻuloa.

Ko e ha ʻoku fakatupu ai ʻe he mismatch ʻa e fakaʻuli ki he LED Vf ʻa e maumau?

Ko e taha ʻo e ngaahi meʻa mahuʻinga taha ka ʻoku faʻa ʻikai fakatokangaʻi ʻi he faʻufaʻu ʻo e LED luminaire ko hono fakafehoanaki lelei ʻa e voltage output ʻa e fakaʻuli ki he ngaahi fie maʻu ʻo e voltage moʻoni ʻo e kavenga LED. Ko e kavenga ʻo ha maama LED ko ha fokotuʻutuʻu ʻo e LEDs, ʻoku faʻa fokotuʻutuʻu ʻi ha ngaahi afo ʻoku faitatau. Ko e voltage fakakatoa ʻo e ngaue (Vo) ʻo ha afo hokohoko ko e fakakatoa ia ʻo e voltages ki muʻa ʻo e LED takitaha (Vo = Vf × Ns, ʻa ia ko e Ns ko e lahi ia ʻo e LEDs ʻi he hokohoko). Ko e meʻa mahuʻinga ko e Vf ʻoku ʻikai ko ha fika tuʻu maʻu mo tuʻumaʻu. ʻOku makatuʻunga ʻaupito ia ʻi he mafana ʻo e ʻea. Koeʻuhi ko e ngaahi koloa semiconductor ʻo e LEDs, ʻoku holo ʻa e Vf ʻi he fakautuutu ʻa e mafana ʻo e junction. ʻI he tafaʻaki ʻe taha, ʻi he mafana maʻulalo, ʻoku tupulaki lahi ʻa e Vf. ʻOku ʻuhinga ʻeni ʻe maʻulalo ange ʻa e voltage ngaue ʻa e maama ʻi he taimi ʻoku vela ai (VoL) pea maʻolunga ange ʻi he taimi ʻoku momoko ai (VoH). ʻI he taimi ʻoku fili ai ha fakaʻuli LED, ʻoku mahuʻinga ke falute kakato ʻe hono output voltage range ʻa e VoL ki he VoH. Kapau ʻoku maʻulalo ange ʻa e voltage output ʻa e fakaʻuli ʻi he VoH, ʻe faingataʻaʻia ʻa e fakaʻuli ke tauhi ʻa e ʻau ʻoku puleʻi ʻi he mafana maʻulalo. ʻE lava ke aʻu ki hono fakangatangata ʻo e voltage, ʻo tupu ai ʻa e maama ke lele ʻi ha malohi maʻulalo ange ʻi he meʻa naʻe fakataumuʻa ki ai, ʻo iku ai ki he siʻisiʻi ange ʻa e maama ʻoku maʻu. Kapau ʻoku maʻolunga ange ʻa e voltage siʻisiʻi taha ʻo e fakaʻuli ʻi he VoL, ʻe fakamalohiʻi ʻa e fakaʻuli ke ngaue ʻi tuʻa ʻi hono tuʻunga lelei taha ʻi he mafana maʻolunga. ʻE lava ke iku ʻeni ki he taʻepau, ʻo tupu ai ʻa e feliliuaki ʻa e output, kemo ʻa e mama, pe tamateʻi ʻa e fakaʻuli. Neongo ia, ʻoku ʻikai ko ha founga ke fakaleleiʻi ʻaki ʻa e ultra-wide output voltage range. ʻOku lelei taha ʻa e ngaahi fakaʻuli ʻi loto ʻi ha voltage pau; ʻoku fakaiku ʻa e fakalaka ʻi he matapa ko ʻeni ki he maʻulalo ange ʻa e lavameʻa mo e malohi (PF) ʻoku masiva. ʻOku toe fakalahi foki ʻe he fuʻu lahi ʻa e fakamole ki he ngaahi konga mo e faingataʻa ʻo e fokotuʻutuʻu. Ko e founga totonu ko hono fikaʻi totonu ʻa e Vo range ʻoku ʻamanaki ki ai ʻo makatuʻunga ʻi he ngaahi tuʻunga pau ʻo e LED mo e mafana ʻo e ngaue pea fili ha fakaʻuli ʻoku feʻunga lelei ʻa e voltage range.

ʻOku anga fefe hono tukunoaʻi ʻo e power derating curves ki he tonounou ʻa e fakaʻuli?

Ko ha fehalaaki angamaheni mo fakamole lahi ʻi he faʻufaʻu ʻo e maama ko hono lau ʻa e tuʻunga malohi ʻo e fakaʻuli ko ha tuʻunga mahuʻinga fakalukufua. Ko hono moʻoni, ʻoku makatuʻunga ʻa e malava ko ia ʻe ha fakaʻuli LED ke ʻoatu hono malohi kakato ʻi hono ʻatakai ngaue. ʻOku ʻomi ʻe he ngaahi kautaha faʻu fakaʻuli falalaʻanga ʻa e fakaikiiki ʻo e ngaahi curves ʻo e malohi ʻi heʻenau koloa. Ko e ongo meʻa mahuʻinga taha ko e load versus ambient temperature derating curve mo e load versus input voltage derating curve. ʻOku fakahaaʻi ʻe he curve ʻo e mafana ʻo e ʻea ʻo e ʻatakai ʻa e malohi lahi taha ʻe lava ke ʻoatu ʻe he fakaʻuli ʻi he fakautuutu ʻa e mafana ʻo e ʻea. ʻI he fakautuutu ʻa e mafana ʻo e ʻea, ʻoku lahi ange ʻa e mafana ʻo e ʻea ʻo e ngaahi konga ʻi loto, tautautefito ki he electrolytic capacitors mo e semiconductors. Ke tauhi ʻa e falalaʻanga mo fakaʻehiʻehi mei he maumau ʻoku teʻeki ai ke hoko, kuo pau ke fakalele ʻa e fakaʻuli ʻi ha malohi maʻulalo ange. Hange ko ʻeni, ko ha fakaʻuli ʻoku fakafuofuaʻi ki he 100W ʻi he 40°C ʻe lava pe ke 70W ʻi he 60°C. Kapau ʻe fokotuʻu ʻe ha tokotaha tisaini ʻa e fakaʻuli ko ʻeni ʻi loto ʻi ha maama vela mo ʻikai lelei ʻa e ʻea ʻo ʻikai vakaiʻi ʻa e curve ʻo e derating, mahalo ʻoku ʻikai ke nau ʻiloʻi ʻoku nau kole ia ke ne ʻoatu ʻa e 100W ʻi ha mafana ʻo e 60°C. ʻE fakatupu ʻe he meʻa ni ʻa e fakaʻuli ke vela ʻaupito, ʻo iku ki ha fakanounou ʻaupito ʻo e moʻui pe maumau he taimi pe ko ia. Ko e meʻa tatau pe, ʻoku fakahaaʻi ʻe he input voltage derating curve ʻa e malava ʻa e fakaʻuli ʻi he voltage kehekehe ʻo e mains. ʻE lava ke ʻoatu ʻe he kau fakaʻuli ʻe niʻihi ʻa e malohi kakato ʻi loto pe ʻi ha vahaʻa voltage siʻisiʻi (e.g., 220-240V) pea ʻe fie maʻu ke derated kapau ʻoku ʻi he ngataʻanga maʻulalo ʻo hono tuʻunga tali (e.g., 180V). Ko hono tukunoaʻi ʻo e ngaahi fie maʻu ko ʻeni ko hono fokotuʻutuʻu ia ʻo ha polokalama ke ʻikai ola lelei, he ʻe ngaue ʻa e fakaʻuli ʻi he ngaahi tuʻunga ʻo e mafana ʻo e ʻea pe ʻuhila naʻe ʻikai fakataumuʻa ke hokohoko atu.

Ko e ha ʻoku fakatupunga ai ʻe he ngaahi fie maʻu taʻemoʻoni ʻo e katakiʻi ʻo e malohi ʻa e ngaahi palopalema?

ʻI he taimi ʻe niʻihi, ʻoku fakafeʻiloaki ʻe he ngaahi fie maʻu ʻa e kasitomaa ki he ngaahi maama LED ʻa e ngaahi tuʻunga ʻoku fepaki mo e ngaahi tefitoʻi ʻulungaanga ngaue ʻo e LEDs mo ʻenau ngaahi fakaʻuli. Ko ha sipinga angamaheni ʻeni ko ha kole ke fokotuʻu ʻa e malohi ʻo e maama takitaha ki ha tuʻunga fasiʻi ʻaupito, hange ko e ±5%, pea ke liliu tonu ʻa e output current ke feau ʻa e malohi ko ʻeni ki he maama kotoa pe. Neongo ʻe tupu ʻa e faʻahinga kole pehee mei ha holi ki he tuʻunga haohaoa ʻi he fakamaketi pe fikaʻi ʻo e ivi, ka ʻoku ne tukunoaʻi ʻa e fisiki ʻo e LEDs. Hange ko ia kuo aleaʻi, ʻoku liliu ʻa e voltage ki muʻa (Vf) ʻo ha LED ʻi he mafana ʻo e ʻea. ʻIkai ngata ai, ʻe liliu ʻa e lavameʻa fakalukufua ʻo e fakaʻuli LED ʻi heʻene mafana mo aʻu ki he potupotutatau ʻo e mafana ʻo e ʻea; ʻoku angamaheni ʻaki ʻa e maʻulalo ange ʻi he kamataʻanga pea tupulaki ʻi he taimi ʻoku mafana ai. Ko ia ai, ʻoku ʻikai ko ha tuʻu maʻu ʻa e malohi ʻo ha luminaire. ʻE kehekehe ia ʻi he mafana ʻo e ʻatakai ʻo e ngaue, loloa ʻo e ngaue (tatau ai pe pe naʻe toki fakamoʻui pe lele ʻi ha ngaahi houa), pea naʻa mo e fanga kiʻi liliu iiki ʻi he LEDs. ʻOku faʻa ʻikai ola lelei ʻa e feinga ke fakamalohiʻi ha fakaʻuli ke ne ʻoatu ha malohi pau ʻaki hono fakasiʻisiʻi ʻa e malohi ʻoku maʻu mei ai. Ko e founga lelei ange ke fakamahinoʻi ha tuʻunga lelei ʻo e malohi ʻoku ne fakamatalaʻi ʻa e ngaahi kehekehe moʻoni ko ʻeni ʻi he mamani. Ko e tefitoʻi taumuʻa ʻo ha fakaʻuli LED ke hoko ko ha maʻuʻanga tokoni ʻo e lolotonga, ʻoku ʻomi ʻa e ʻau ʻoku tuʻu maʻu mo ʻamanaki lelei ki he LEDs. Ko e input power ko ha ola ia hono ua ʻo e ʻau ko ia, ʻa e voltage LED, mo e lavameʻa ʻa e fakaʻuli. ʻE lava ke fakaiku ʻa hono fakamahinoʻi ʻo e ngaahi fakaʻuli ʻo makatuʻunga ʻi he malohi ʻoku ʻikai moʻoni ki hono fakafisingaʻi ʻo e ngaahi koloa lelei, lahi ange ʻa e fakamole ki hono fakasiʻisiʻi ʻo e angamaheni, pea mo ha taʻemahino ki he founga ngaue ʻa e polokalama.

ʻE lava fefe ke fakaʻauha ʻe he ngaahi founga sivi hala ʻa e ngaahi fakaʻuli LED?

ʻOku ʻikai ko ha meʻa foʻou ʻa e maumau ʻa e ngaahi fakaʻuli LED foʻou lolotonga e ʻuluaki sivi ʻa e kasitomaa, ʻo iku ki he aofangatuku hala ʻoku hala ʻa e koloa. ʻI he lahi ʻo e ngaahi meʻa ko ʻeni, ʻoku ʻikai tupu ʻa e taʻelavameʻa mei ha maumau ʻi he fakaʻuli, ka koeʻuhi ko ha founga sivi ʻoku hala mo maumau. Ko ha sipinga angamaheni ʻa hono fakaʻaongaʻi ʻo ha variac (variable auto-transformer) ke ʻohake mamalie ʻa e input voltage. ʻE lava ke fakafehokotaki ʻe ha ʻenisinia ʻa e fakaʻuli ki he variac, fokotuʻu ʻa e variac ki he noa, pea liliu mamalie ia ki he voltage ʻoku fakafuofuaʻi (e.g., 220V). Neongo ʻoku ngali tokanga ʻeni, ka ʻoku fuʻu fakamafasia ʻaupito ia ki he tuʻunga ʻo e fakaʻuli. ʻI he voltage input maʻulalo ʻaupito, mahalo he ʻikai ngaue kakato ʻa e circuits ʻoku puleʻi ʻe he fakaʻuli, ka ʻoku fehokotaki ʻa e input rectifier mo e fuse. ʻI he fakalahi mamalie ʻa e voltage, ʻoku feinga ʻa e fakaʻuli ke kamata mo toʻo ʻa e malohi, ka ʻoku ʻikai ke ʻi honau tuʻunga angamaheni ʻa e circuits ʻi loto. ʻE lava ke fakatupu ʻe he meʻa ni ʻa e input current ke maʻolunga ange ʻi he inrush current, ʻo malava ke puhi ʻa e fuse, overstressing ʻa e hala fakakavakava rectifier, pe maumauʻi ʻa e input thermistor. Ko e founga sivi totonu ʻoku fehangahangai ia: ʻuluaki, fokotuʻu ʻa e variac ki he voltage nominal ʻa e fakaʻuli (e.g., 220V). Hili ia, ʻi he motuhi ʻa e fakaʻuli, fakaʻaongaʻi ʻa e malohi ki he variac. Ko ʻene tuʻu maʻu pe ʻa e voltage output ʻi he 220V, fakahoko ʻa e fakaʻuli ki ai. ʻE kamata leva ʻa e fakaʻuli ʻi he founga naʻe fokotuʻutuʻu mo mapuleʻi. Neongo ʻe lava ke kau ʻi he ngaahi fakaʻuli maʻolunga ʻe niʻihi ʻa e maluʻi ʻo e input undervoltage pe ko ha circuit fakangatangata ʻo e voltage ke maluʻi mei he faʻahinga ngaue hala ko ʻeni, ko ha meʻa angamaheni ia ʻi he ngaahi fakaʻuli lahi. Ko ia ai, ʻoku mahuʻinga ʻa e mahino mo e muimui ki he founga sivi totonu ke fakaʻehiʻehi mei hono fakahalaiaʻi loi ʻo e ngaahi koloa lelei.

Ko e ha ʻoku maʻu ai ʻe he ngaahi sivi kehekehe ʻa e ngaahi ola kehekehe?

Ko ha tupuʻanga angamaheni ʻo e puputuʻu lolotonga hono siviʻi ʻo e fakaʻuli ko e taimi ʻoku ngaue lelei ai ʻa e fakaʻuli ʻi he taimi ʻoku fakafehokotaki ai ki ha uta LED moʻoni, ka ʻoku ʻikai ngaue lelei, ʻikai lava ke kamata, pe ʻulungaanga kovi ʻi he taimi ʻoku fakafehokotaki ai ki ha uta fakaʻilekitulonika (e-load). ʻOku faʻa ʻi ai ha taha ʻo e ngaahi tupuʻanga ʻe tolu ʻo e faikehekehe ko ʻeni. ʻUluaki, mahalo ʻoku hala hono fokotuʻutuʻu ʻo e uta fakaʻilekitulonika. ʻE lava ke lahi ange ʻa e voltage pe malohi ʻoku fie maʻu ʻe he e-load ʻi he feituʻu ngaue ʻa e fakaʻuli pe feituʻu malu ʻo e e-load. ʻI he taimi ʻoku siviʻi ai ha maʻuʻanga malohi tuʻumaʻu ʻi he voltage (CV) mode, ʻoku ʻikai totonu ke laka hake ʻa e malohi ʻo e sivi ʻi he 70% ʻo e malohi lahi taha ʻo e e-load ke fakaʻehiʻehi mei he fuʻu malohi ʻo e maluʻi. Ua, ʻe lava ke ʻikai fenapasi ʻa e ngaahi ʻulungaanga pau ʻo e e-load mo e siakale ʻoku puleʻi ʻe he fakaʻuli. ʻE lava ke fakatupu ʻe he ngaahi kavenga ʻe niʻihi ʻa e voltage ʻi he tuʻunga ʻo e voltage pe oscillations ʻa ia ʻoku ne puputuʻu ʻa e feedback circuitry ʻa e fakaʻuli. Tolu, ʻoku faʻa maʻu ʻe he ngaahi kavenga fakaʻilekitulonika ʻa e malohi ʻo e input input. ʻE lava ke liliu ʻe hono fakafehokotaki fakahangatonu ʻo e capacitance ko ʻeni ʻi he tuʻunga tatau mo e output ʻa e fakaʻuli, ʻo uesia ai ʻa e ongoʻi lolotonga ʻa e fakaʻuli pea fakatupu ʻa e taʻepau. Koeʻuhi ʻoku fakataumuʻa pau ʻa e fakaʻuli LED ke ne aʻusia ʻa e ngaahi ʻulungaanga ngaue ʻo ha maama LED—ʻa ia ʻoku kehe ʻaupito ʻa e impedance mo e tali fakataimi mei he e-load—ko e sivi totonu mo falalaʻanga taha ko hono fakaʻaongaʻi ʻo ha kavenga LED moʻoni. ʻOku ʻomi ʻe hono fakafehokotaki ʻo ha ngaahi chips LED moʻoni, fakataha mo ha ammeter mo ha voltmeter tatau, ʻa e simulation moʻoni taha ʻo e ngaue moʻoni ʻi he mamani pea fakaʻehiʻehi mei he ngaahi meʻa ʻoku fakafeʻiloaki ʻe he ngaahi kavenga fakaʻilekitulonika.

Ko e ha ha ngaahi fehalaaki angamaheni ʻi he uaea ʻoku iku ki he maumau ʻa e fakaʻuli he taimi pe ko ia?

ʻOku lahi ʻa e ngaahi maumau ʻa e fakaʻuli ʻoku ʻikai tupu mei he motuʻa mamalie ka ko e miswiring fakafokifa mo fakatuʻutamaki lolotonga hono fola. ʻOku faʻa faingofua pe ʻa e ngaahi fehalaaki ko ʻeni ka ʻoku fakamamahi. Ko ha fehalaaki ʻoku faʻa hoko ko hono fakafehokotaki fakahangatonu ʻo e AC ki he DC output terminals ʻo e fakaʻuli. ʻOku fakaʻaongaʻi ʻe he meʻa ni ʻa e AC voltage maʻolunga ki he ngaahi meʻa naʻe fakataumuʻa pe ki he DC voltage maʻulalo, ʻo fakaʻauha he taimi pe ko ia ʻa e output capacitors mo e rectifiers. Ko e fehalaaki angamaheni ʻe taha ko hono fakafehokotaki ʻo e AC ki he input ʻo ha fakaʻuli DC/DC, ʻa ia ʻoku fakataumuʻa ke maʻu ha voltage DC mei ha maʻuʻanga ʻuhila kehe. ʻOku tatau pe ʻa e ola: taʻelavameʻa he taimi pe ko ia. Ki he kau fakaʻuli ʻoku lahi ʻenau outputs pe ngaahi ngaue tokoni hange ko e dimming, ʻoku malava ke fakafehokotaki fakatuʻupake ʻa e output ʻo e lolotonga ki he ngaahi uaea ʻoku puleʻi ʻa e dimming, ʻa ia ʻe lava ke maumauʻi ai ʻa e circuit dimming pelepelengesi. Mahalo ko e miswiring fakatuʻutamaki taha, mei he tafaʻaki ʻo e malu, ko hono fakahoko ʻo e uaea moʻui (phase) ki he kelekele ʻo e kelekele. ʻE lava ke hoko ʻeni ʻo moʻui ʻa e fale ʻo e maama ʻo ʻikai ngaue ʻa e fakaʻuli, ʻo fakatupu ai ha fakatuʻutamaki lahi ʻo e lulu pea malava ke tuʻu ai ʻa e ngaahi meʻa ʻoku fakahohaʻasi ʻi he kelekele. ʻOku fakamamafaʻi ʻe he ngaahi fehalaaki ko ʻeni ʻa e mahuʻinga ʻo e fakaʻilonga mahino ʻi he ngaahi fakaʻuli mo e ngaahi founga fakalelei mo akoʻi, tautautefito ki he ngaahi polokalama faingataʻa ʻi tuʻa ʻa ia ʻoku lahi ai ʻa e uaea mo e ngaahi tuʻunga.

ʻOku anga fefe hono fakatupu ʻe he ngaahi polokalama ʻuhila konga tolu ʻa e maumau ʻa e fakaʻuli?

Ko e ngaahi maama lalahi ʻi tuʻa, hange ko e maama hala pe maama ʻo e malaʻe vaʻinga, ʻoku faʻa fakalele ia ʻe ha polokalama fakaʻuhila konga tolu, uaea fa. ʻI ha fokotuʻutuʻu angamaheni (e.g., ʻi he ngaahi fonua lahi), ko e voltage ʻi he vahaʻa ʻo ha laine ʻe taha mo e laine tuʻu ʻi tuʻa (noa) ko e 220VAC. Ko e meʻa ʻeni ʻoku fakataumuʻa ki ai ʻa e ngaahi fakaʻuli LED konga taha. Neongo ia, ko e voltage ʻi he vahaʻa ʻo e ongo laine kehekehe ko e 380VAC. ʻE lava ke hoko ha fehalaaki mahuʻinga ʻi hono fola kapau ʻe fehalaaki hono fakafehokotaki ʻe ha tokotaha ngaue langa ʻa e uaea input ʻa e fakaʻuli ki ha laine kehekehe ʻe ua kae ʻikai ko e konga pe ʻe taha mo e tuʻu ʻi tuʻa. ʻI he taimi ʻoku fakaʻaongaʻi ai ʻa e malohi, ʻoku moʻulaloa leva ʻa e fakaʻuli ki he 380VAC, ʻo laka mamaʻo ange ia ʻi hono voltage input maʻolunga taha. ʻE fakatupu ʻe he meʻa ni ha maumau ʻi he taimi pe ko ia, pea ʻoku faʻa ʻasi mai ʻa e maumau ki he ngaahi konga ʻoku fakahu mai. ʻOku fie maʻu ke taʻofi ʻeni ʻa e muimui pau ki he ngaahi fakatata ʻo e uaea, fakaʻilongaʻi mahino ʻi he ngaahi puha fetaulaki, pea mo ha ako fakaʻauliliki ki he kau ngaue ki hono fola. Ko ha tokoni mahuʻinga ʻa e color-coding ʻo e uaea (e.g., lanu melomelo pe ʻuliʻuli ki he ngaahi tuʻunga, lanu pulu ki he tuʻu ʻi tuʻa), ka kuo pau ke fakahoko maʻu pe mo totonu. Ko hono fakapapauʻi ʻo e voltage ʻi he feituʻu ʻoku fehokotaki ai ʻaki ha multimeter kimuʻa pea toki fakahoko ʻa e fakaʻuli ko e founga pau taha ia ke taʻofi ai ʻa e faʻahinga fehalaaki ko ʻeni.

Ko e ha ʻe lava ke maumauʻi ai ʻe he fetoʻaki ʻo e grid ʻuhila ʻa e ngaahi fakaʻuli LED?

Naʻa mo e taimi ʻoku fokotuʻu totonu ai ʻa e fakaʻuli, ʻe kei lava pe ke ʻi ha tuʻunga fakatuʻutamaki mei he ngaahi fakahohaʻasi ʻi he grid ʻuhila. Neongo ʻoku fakataumuʻa ʻa e ngaahi fakaʻuli ke ngaue ʻi loto ʻi ha tuʻunga pau ʻo e input voltage (e.g., 180-264VAC ki ha fakaʻuli 220V), ʻe lava ke aʻusia ʻe he grid ha ngaahi fetoʻaki lahi. ʻOku moʻoni ʻeni ʻi he ngaahi feituʻu loloa pe ʻi he ngaahi netiueka ʻoku nau ʻomi ha ngaahi kavenga lalahi hange ko e ngaahi misini mamafa, pamu, pe lifi. ʻI he taimi ʻoku fakamoʻui ai ha misini lahi pehee, te ne lava ʻo tohoakiʻi ha fuʻu ʻau lahi ʻo fakatupu ha holo fakataimi kae mahuʻinga ʻi he voltage ʻo e grid. ʻI he taimi ʻoku tuʻu ai, ʻe lava ke ne fakatupu ha voltage spike. ʻE lava ke fakatupu ʻe he ngaahi meʻa ko ʻeni ʻa e voltage ʻo e grid ke vilo ʻo fuʻu lahi ange, ʻo malava ke laka hake ʻi he feituʻu malu ʻo e fakaʻuli. Hange ko ʻeni, kapau ʻe lahi ange ʻa e voltage ʻi he taimi pe ko ia, 310VAC ʻi ha ngaahi milliseconds siʻi, ʻe lava ke ne fuʻu totuʻa ʻa e ngaahi konga ʻoku fakahu pea maumauʻi ʻa e fakaʻuli. ʻOku mahuʻinga ke fakafaikehekeheʻi ʻa e ngaahi malohi ko ʻeni mei he ngaahi spikes ʻoku fakatupu ʻe he ʻuhila. ʻOku fakataumuʻa ʻa e ngaahi meʻangaue maluʻi ʻuhila (hange ko e varistors) ke clamp vave ʻaupito, ivi maʻolunga ʻoku fua ʻi he microseconds. Ka neongo ia, ʻoku tuai ange ʻa e fetoʻaki ʻa e grid, ʻoku feʻunga mo e milliseconds ʻe hongofulu pe laungeau, pea ʻe lava ke lomekina ʻa e circuitry ʻa e fakaʻuli neongo ʻoku ʻi ai ʻa e tefitoʻi maluʻi ʻo e surge. ʻI he ngaahi feituʻu ʻoku ʻikai tuʻumaʻu ai ʻa e grid ʻuhila pe ofi ki he ngaahi meʻangaue lalahi, ʻe ala fie maʻu ke vakaiʻi ʻa e tuʻunga taʻeueʻia ʻo e grid pe, ʻi he ngaahi meʻa ʻoku fuʻu totuʻa, fakakaukauʻi ʻa e tuʻunga ʻo e ʻuhila pe ko ha transformer makehe ki he circuit.

ʻOku anga fefe hono fakaiku ʻa e kovi ʻo e vela ki he taʻemalava ʻa e fakaʻuli?

Ko e ʻuhinga fakaʻosi, pea mahalo ko e lahi taha, ʻo e ʻikai lava ʻa e fakaʻuli ko e ʻikai lelei hono puleʻi ʻo e mafana ʻo e ʻea. Ko e vela ko e fili ia ʻo e ngaahi meʻa fakaʻilekitulonika kotoa pe, pea ko e ngaahi konga ʻi loto ʻi ha fakaʻuli LED—tautautefito ki he electrolytic capacitors mo e semiconductors—ʻoku matuʻaki ongoʻingofua ʻa e mafana ʻo e ʻea. ʻOku fakatupu ʻe he fakaʻuli ʻa e vela koeʻuhi ko ʻene taʻefeʻunga. Kuo pau ke tukuange ʻa e vela ko ʻeni ki he ʻatakai takatakai. Kapau ʻoku fokotuʻu ʻa e fakaʻuli ʻi ha feituʻu ʻoku ʻikai ʻea mo tapuni, hange ko e loto fale ʻo ha maama kuo tapuni, ʻe lava ke vave ʻa e vela ʻo e ʻea. ʻE lava ke maʻolunga ange ʻa e mafana ʻo e ʻea ʻi tuʻa. Ke fakasiʻisiʻi ʻeni, ʻoku totonu ke fetuʻutaki hangatonu ʻa e fale ʻo e fakaʻuli mo e fale ʻi tuʻa ʻo e mama. ʻE lava ke hoko ʻa e sino ʻo e mama, ʻa ia ʻoku faʻa ngaohi mei he ʻalaminiume, ko ha fuʻu meʻa vela lahi ki he fakaʻuli. Kapau ʻoku fakaʻata ʻe he ngaahi tukunga, ʻe lava ke fakaleleiʻi ʻe hono fakaʻaongaʻi ʻo e ngaahi naunau ʻo e mafana ʻo e ʻea, hange ko e ngako mafana pe ko ha meʻa ʻoku fakaʻaongaʻi ʻi he vahaʻa ʻo e puha ʻo e fakaʻuli mo e funga ʻo e maama ʻo e maama ʻo fakaleleiʻi ʻa e feʻaveʻaki ʻo e vela. ʻOku fakaʻata heni ʻa e vela ʻo e fakaʻuli ke ʻave ki he faʻunga ʻo e maama pea toki convected ki he ʻea ʻi tuʻa. Ko e ʻikai ke fakakaukauʻi ʻa e ʻatakai vela ʻo e fakaʻuli ʻoku taʻo ia mei loto. ʻI hono fakapapauʻi ʻoku lelei ʻa e fetuʻutaki mafana mo e ʻea ʻi he feituʻu ʻe lava ai, ʻe lava ke tauhi ke maʻulalo ange ʻa e mafana ʻo e ngaue ʻa e fakaʻuli, fakaleleiʻi fakahangatonu ʻene lavameʻa, fakaloloa ʻene moʻui, mo taʻofi ʻa e maumau taʻehoko.

Ngaahi Fehuʻi ʻOku Faʻa ʻEke Fekauʻaki mo e Maumau ʻa e Fakaʻuli LED

Ko e ha ʻa e tupuʻanga angamaheni ʻo e maumau ʻa e fakaʻuli LED?

Neongo ʻoku lahi ʻa e ngaahi tupuʻanga, ka ko e vela ʻa e meʻa lahi taha mo angamaheni. ʻOku hanga ʻe he vela lahi ʻo fakamafasiaʻi ʻa e ngaahi meʻa ʻi loto, tautautefito ki he electrolytic capacitors, ʻo fakavaveʻi ʻenau motuʻa pea iku ki he taʻengaue taʻehoko. Ko e kovi hono puleʻi ʻo e mafana ʻo e ʻea, tatau ai pe pe ko e tupu mei ha ʻatakai vela pe siʻisiʻi ʻa e vela, ko e tefitoʻi tupuʻanga ia ʻo e fakasiʻisiʻi ʻo e moʻui ʻa e fakaʻuli.

ʻE lava ke maumauʻi ʻe ha fakaʻuli LED maumau ʻa e chips LED?

ʻIo, ko e moʻoni ia. ʻE lava ke taʻepau ʻa e fakaʻuli ʻoku ʻikai ola lelei pea ʻoku fuʻu lahi ʻa e ʻuhila pe voltage spikes. ʻE lava ke fakatupu ʻe he "overdriving" ko ʻeni ʻo e LEDs ke nau vela mo vela vave, ʻo faʻa tuku ha ngaahi feituʻu ʻuliʻuli ʻi he chips. ʻI he tukunga ko ʻeni, mahalo he ʻikai feʻunga hono fetongi pe ʻo e fakaʻuli kapau kuo ʻosi maumau ʻa e LEDs.

Te u lava fefe ʻo tala pe kuo maumau ha fakaʻuli LED?

ʻOku kau ʻi he ngaahi fakaʻilonga angamaheni ʻo e maumau ʻa e fakaʻuli ʻa e: ʻikai fakamoʻui ʻa e mama, ʻasi mai ʻa e kemo pe tapa, ko ha longoaʻa ʻoku haʻu mei he fakaʻuli, pe ko e poipola lahi mo taʻetatau ʻa e mama. Kapau ʻoku fakapapauʻi ʻoku ʻi ai ʻa e ʻuhila ki he meʻa, ʻoku meimei ke tuhu maʻu pe ʻa e ngaahi fakaʻilonga ko ʻeni ki ha fakaʻuli ʻoku ʻikai ngaue pe ʻikai lava. ʻI he ngaahi meʻa ʻe niʻihi, ʻe lava ke ʻilo ʻe ha sivi ʻoku pupula pe leak ʻa e capacitors ʻi he circuit board ʻa e fakaʻuli.