Mahino ʻa e Maumau ʻa e LED: Ko e ha ʻoku ʻikai toe ngaue ai ʻa e LED Beads?

Kimuʻa pea toki hu ki he ngaahi founga ʻiloʻi, ʻoku mahuʻinga ke mahino ʻa e meʻa ʻoku faʻu ʻaki ha LED maumau. ʻI he lahi taha ʻo e ngaahi koloa mama, ʻoku fokotuʻutuʻu ʻa e LED beads ʻi he Ngaahi circuits hokohoko mo e faitatau. ʻOku fakapapauʻi ʻe he fehokotakiʻanga hokohoko ʻoku tafe ʻa e ʻau tatau ʻi he ngaahi foʻi foʻi foʻi foʻi foʻi kula ʻe taha, ka ʻo kapau ʻe maumau ha foʻi foʻi fo ʻI he ngaahi circuits parallel, ʻe ʻikai lava ke tamateʻi ʻe ha foʻi kula ʻe taha ʻa e polokalama kotoa ka ʻe lava ke ne fakatupu ha tufakiʻanga naunau ʻoku ʻikai tatau ʻa e lolotonga, ʻo iku ki he maumau vave ʻa e ngaahi foʻi kula kehe.

Ko e ʻulungaanga angamaheni ʻo ha foʻi pia LED ʻoku maumau pe motuʻa ko e ngingila fakalukufua ʻo e mama ʻoku ʻikai feʻunga pe kemo ʻa e mama. Neongo ia, ʻoku ʻikai fakatupu ʻa e dimming kotoa pe ʻe he LED mate; taimi ʻe niʻihi ko e fakaʻuli. Ko hono ʻiloʻi ʻo e founga ke fakamavahevaheʻi ai ʻa e palopalema ʻo fakaʻaongaʻi ʻa e ngaahi tefitoʻi meʻangaue hange ko e multimeter ko ha potoʻi ngaue mahuʻinga ia ki he kau manako ʻi he DIY, kau ngaue fakaʻuhila mo e kau palofesinale ki hono tokangaʻi.

Ko e ha ʻa e founga lelei taha ke siviʻi ai ha foʻi pia LED?

ʻOku ʻi ai ha ngaahi founga lahi ke siviʻi ʻaki ha LED, ka ʻi hono fakaʻaongaʻi ʻo ha Multimeter fakaʻilekitulonika ko e falalaʻanga mo maʻu taha ia. Koeʻuhi ko e LED ko ha diode (ko ha Light Emitting Diode), ʻoku ne fakaʻata ʻa e ʻau ke tafe ʻi he feituʻu pe ʻe taha. Ko e koloa ko ʻeni ʻoku tau fakaʻaongaʻi lolotonga hono siviʻi.

Ko e founga hangatonu taha ko e Diode Test Mode ʻi ha multimeter fakaʻilekitulonika. ʻOku ʻikai tatau ia mo ha sivi angamaheni ʻo e resistance, ʻoku ʻave ʻe he diode mode ha kiʻi ʻau siʻisiʻi ʻi he konga pea fua ʻa e to ʻa e voltage. Ki ha LED angamaheni, ʻoku angamaheni ʻaki ʻa e to ʻa e voltage ko ʻeni ʻi he vahaʻa ʻo e 1.8V mo e 3.3V, ʻo makatuʻunga ʻi he lanu (ʻoku maʻulalo ange ʻa e LED lanu kulokula, lanu pulu/hinehina ʻoku maʻolunga ange). Kapau ʻoku moʻui lelei ʻa e LED, te ne tuku mai ha ulo siʻisiʻi. Kapau ʻoku ʻikai ke ʻi ai ha lau (OL, pe Open Line) pe ʻoku ʻikai ulo ʻa e LED, ʻoku ngalingali ʻoku maumau. Kiate kinautolu ʻoku nau fakaʻaongaʻi ʻa e analog (pointer type) multimeter, ʻe lava ke fakaʻaongaʻi ʻa e R×1 (Resistance 1 Ohm), ʻa ia ʻoku ne ʻomi foki ha ʻau feʻunga ke fakamaama nounou ha LED.

Founga hono fakaʻaongaʻi ʻo ha multimeter ke ʻiloʻi ʻa e LED kuo maumau: sitepu ki he sitepu

ʻOku nofotaha ʻa e founga ko ʻeni ʻi he sivi ʻo e diode mode, ʻa ia ko e tuʻunga koula ia ki he founga hono fakaʻaongaʻi ʻo ha multimeter ke ʻiloʻi ʻa e LED kuo maumau ngaahi konga. Te tau fakamatalaʻi fakatouʻosi ʻa e sivi ʻi loto mo tuʻa.

Sitepu 1: Malu mo e Teuteu

ʻUluaki, fakapapauʻi ʻoku motuhi kakato ʻa e ʻuhila ki he circuit. Kapau ʻoku ke siviʻi ha foʻi ʻuhila LED, toʻo ia mei he meʻa ʻoku ʻi ai. Kapau ʻoku ʻahiʻahiʻi ha konga ʻi ha circuit board, tamateʻi ʻa e ʻuhila ʻo e ʻuhila ʻuhila Seti hoʻo digital multimeter ki he Fakaʻilonga ʻo e Diode (ʻoku faʻa fakafofongaʻi ʻe ha fakaʻilonga diode mo ha ngaahi laine takatakai). Fakahu ʻa e taki ʻuliʻuli ki he COM port pea mo e lanu kulokula ki he VΩ port.

Sitepu 2: ʻIloʻi ʻo e Polarity

ʻOku polarized ʻa e LEDs. ʻOku ui ʻa e taki lelei ko e Anode, pea ko e kovi ko e Katoti. ʻI he lahi taha ʻo e ngaahi foʻi kula LED, te ke lava ʻo ʻiloʻi ʻa e cathode ʻaki haʻo kumi ha tapa lafalafa ʻi he fale pe ko ha fakaʻilonga lanu mata ʻi he solder pad (faʻa ko ha fakaʻilonga minus pe ko ha tab lanu mata). ʻOku faʻa fakahaaʻi foki ʻe he uaea taki loloa ange (kapau ʻoku ʻikai kosi) ʻa e anode. Fakahoko ʻa e fekumi kulokula ki he anode pea mo e fakatotolo ʻuliʻuli ki he cathode. ʻOku ʻiloa ʻeni ko e filifilimanako ki muʻa.

Sitepu 3: Fakaʻuhingaʻi ʻo e Laukonga

Ala ki he ngaahi meʻa fakatotolo ki he pads pe leads. ʻE fai ʻe ha LED moʻui lelei ha meʻa ʻe ua: ʻe fakaʻaliʻali ʻe he multimeter ha voltage ki muʻa (e.g., 1.8V ki he 3.2V), pea ʻe tuku mai ʻe he LED ha maama siʻisiʻi (mahalo ʻe fie maʻu ke ke fakasiʻisiʻi ʻa e maama ʻo e loki pe fakamalumalu ʻaki ho nima ke sio ki ai). Kapau ʻoku ʻasi mai ʻi he fakaʻaliʻali ʻa e "OL" (Over Limit) pe "1", pea ʻoku ʻikai ha mama, ʻoku ava ʻa e LED (maumau). Kapau te ke fulihi ʻa e probes (ʻuliʻuli ki he anode, kulokula ki he cathode) pea maʻu ha lau, ʻoku nounou pe leaky ʻa e LED, ʻa ia ʻoku ne fakahaaʻi foki ʻa e taʻelavameʻa.

Tokoni Fakapalofesinale: ʻOku ʻi ai e taimi ʻe niʻihi ʻoku ʻikai malohi feʻunga ʻa e ʻau ʻo e sivi ʻo e multimeter ke fakamaama ʻa e LEDs malohi (hange ko e 1W pe 3W beads). ʻI he meʻa ni, fakafalala ki he lau ʻo e voltage. Kapau te ke maʻu ha voltage tuʻu maʻu ʻi loto ʻi he feituʻu ʻoku ʻamanaki ki ai, ʻoku ngalingali ʻoku kei tuʻu maʻu pe ʻa e fehokotakiʻanga ʻo e diode.

Ko e ha ʻoku fakahaaʻi ai ʻe he Multimeter ʻa e hokohoko atu ka ʻoku ʻikai ulo ʻa e LED?

Ko ha meʻa angamaheni ʻeni ʻo e puputuʻu. ʻOku siviʻi ʻe he mode sivi ʻo e diode ʻi ha multimeter ʻa e fehokotakiʻanga ʻo e semiconductor, kae ʻikai ko e phosphor pe ko e tuʻunga totonu ʻo e uaea haʻi. Kapau naʻe faingataʻaʻia ʻa e LED ʻi he "feituʻu fakapoʻuli" (ʻa ia kuo vela ai ʻa e uaea haʻi), ʻe fakahaaʻi ʻe he multimeter ʻa e "OL" koeʻuhi he ʻoku ava ʻa e circuit. Ka neongo ia, kapau ʻoku faingataʻaʻia ʻa e LED mei he fakaʻauha ʻo e phosphor pe motuʻa, ʻe kei ongo fakaʻuhila pe ʻa e diode junction (ʻoku fakahaaʻi ai ʻa e to ʻa e voltage totonu), ka ʻoku siʻisiʻi ʻaupito ʻa e output ʻo e mama. ʻOku faʻa ui ʻeni ko e "LED motuʻa" pe "holoki ʻo e lumen." ʻI he ngaahi meʻa pehee, ʻoku paasi ʻa e sivi ʻo e multimeter, ka ʻoku nenefu ʻa e LED.

Ki he ngaahi LED motuʻa, ʻoku kei tuʻu pe ʻa e ngaahi koloa fakaʻuhila, ka ʻoku ʻikai lava ʻa e output ʻo e fakaʻilonga. Ko e feituʻu ʻeni ʻoku fie maʻu ai ʻa e ngaahi founga kehe ki hono ʻiloʻi, hange ko e parallel test pe wire shorting method.

Ko e ha ʻa e founga ʻo e fakamaau tatau ki hono kumi ʻo e LED kovi?

ʻI he taimi ʻoku fengaueʻaki ai mo motuʻa ʻa e ngaahi foʻi kuku LED ʻa ia kuo mole ʻa e ngingila ka ʻoku kei fakahaaʻi pe ʻa e ngaahi ʻulungaanga ʻo e diode ʻi ha mita, ʻoku fuʻu ola lelei ʻaupito ʻa e founga ʻo e fakamaau tatau. ʻOku makatuʻunga ʻa e founga ko ʻeni ʻi he tefitoʻi moʻoni ʻo e bypassing ʻo ha fehokotakiʻanga vaivai ʻi ha circuit hokohoko.

Ko e "Lelei LED" Parallel Test

ʻOku fie maʻu ʻe he founga ko ʻeni ha LED 1W ʻoku ʻiloʻi mo ngaue kakato. Solder ha ngaahi uaea nounou mo feliliuaki ki he pine takitaha ʻo e LED "lelei" ko ʻeni ke liliu ia ke hoko ko ha sivi toʻotoʻo. ʻI he taimi ni, ʻi hono fakamoʻui ʻo e foʻi ʻuhila ʻoku maumau (fakalelei, pea mo e insulation totonu), lomiʻi ʻa e ongo ngataʻanga ʻo hoʻo LED lelei ʻi he solder pads ʻo e foʻi ʻuhila LED takitaha ʻi he foʻi ʻuhila ʻoku mahaloʻi. Koeʻuhi ko hoʻo sivi LED ko ha hala ʻoku maʻulalo ʻa e fakafepaki, te ne kaihaʻasi ʻa e ʻau mei he foʻi pia ʻoku ke siviʻi. Kapau te ke ala ki ha foʻi pia moʻui lelei, ʻoku ʻikai ha meʻa fakaofo ia ʻe hoko. Ka ʻo kapau te ke ala ki ha foʻi foʻi ʻuhila ʻoku vaivai pe motuʻa, ʻe fakalaka ʻa e LED sivi lelei ʻi he foʻi ʻuhila vaivai ko ia, ʻo fakaʻata ai ha ʻau lahi ange ke tafe ʻi he toenga ʻo e ngaahi foʻi ʻuhila tupulaki lahi. Ko e foʻi kula ʻoku ne fakatupu ʻa e puna ko ʻeni ʻi he ngingila ko e meʻa ʻoku fehalaaki.

Ko hono fakaʻaongaʻi ʻo ha uaea faingofua ki he founga shorting

Kapau ʻoku ʻikai ke ʻi ai haʻo LED 1W talifaki, te ke lava ʻo fakaʻaongaʻi ha kiʻi konga uaea insulated ʻoku toʻo hono muiʻi (ko ha "uaea shorting"). ʻI hono fakamoʻui ʻo e foʻi ʻuhila, fakanounouʻi fakalelei tahataha ʻa e solder pads ʻo e LED bead takitaha. Fakatokanga: Tokanga ʻaupito ke ʻoua naʻa ala ki ha foʻi foʻi kula kehekehe ʻe ua pe ngaahi konga kehe ʻo e sēketi ʻi he taimi tatau ke fakaʻehiʻehi mei ha tuʻunga nounou ʻi he sēkelé. ʻI he taimi ʻoku ke nounou ai ʻi ha foʻi foʻi foʻi kula moʻui lelei, ʻoku mate ʻa e foʻi kula (ʻi hoʻo fakalaka mei ai), ka ʻoku kei ulo pe ʻa e toenga. Ka neongo ia, kapau te ke nounou ʻi ha foʻi foʻi kula motuʻa ʻoku ne fakatupu ʻa e fakafepaki maʻolunga ʻo e circuit, ʻe fakakakato ʻe he nounou ʻa e circuit ki he ngaahi foʻi foʻi foʻi foʻi kula kehe, pea ʻe fakaʻau ke maama ange ʻa e foʻi ʻuhila. ʻOku ʻiloʻi heni ʻa e palopalema.

Fakatokanga ki he Maluʻi: ʻOku totonu ke fakahoko ʻi he tokanga ʻa e founga ʻo e shorting ʻo e uaea mo e sivi tatau. Ngaue ʻi ha feituʻu momoa, fakaʻaongaʻi ʻa e ngaahi meʻangaue ʻoku ʻi ai ha meʻangaue ʻoku ʻikai ke ʻi ai ha meʻangaue, pea fakaʻehiʻehi mei he ala ki he ngaahi Kapau ʻoku ʻikai ke ke ongoʻi fiemalie ʻi he ngaue mo e circuits moʻui, toʻo ʻa e foʻi ʻuhila pea siviʻi ʻa e ngaahi konga mei he circuit ʻo fakaʻaongaʻi ʻa e sivi ʻo e multimeter diode.

Founga ke fili ai ʻa e ngaahi fokotuʻutuʻu totonu ʻo e multimeter ki hono siviʻi ʻo e LED

ʻOku ʻikai ke tatau ʻa e multimeters kotoa pe. Ke tonu ʻiloʻi ʻa e LED kuo maumau Beads, ʻoku fie maʻu ke mahino kiate koe ʻa e ngaahi fokotuʻutuʻu.

• Diode Test Mode (Fakaʻilonga: →+): Ko e tefitoʻi fokotuʻutuʻu ʻeni. ʻOku angamaheni ʻaki ʻene output ha ʻau ʻo e 1mA ki he 2mA. ʻOku feʻunga ʻeni ki he LED fakaʻilonga angamaheni mo e fanga kiʻi LED SMD iiki.
• Resistance Mode (Ω): ʻE lava ke ngaue hono fakaʻaongaʻi ʻo e R×1 pe R×10 ʻi ha mita analog, ka ʻoku ʻikai fuʻu tonu ia. ʻI ha meʻafua fakaʻilekitulonika, mahalo he ʻikai ke ʻomi ʻe he resistance mode ha voltage feʻunga ke fakaʻilongaʻi ʻa e LED, ʻo iku ai ki he ʻikai ke lau ʻo aʻu ki ha LED lelei.
• Vakaiʻi ʻo e Voltage (V): He ʻikai te ke lava ʻo siviʻi ha LED ʻoku ʻikai fakaʻaongaʻi ʻaki ha voltage setting. Neongo ia, te ke lava ʻo fakaʻaongaʻi ʻa e DC voltage setting ʻi ha circuit powered ke vakaiʻi pe ʻoku aʻu ʻa e voltage ki he afo LED, ʻa ia ʻoku tokoni ke siviʻi ʻa e ngaahi palopalema ʻo e fakaʻuli mo e ngaahi palopalema ʻo e bead.

Kapau ʻoku ʻikai ke ʻi ai ha diode mode ʻi hoʻo multimeter, te ke lava ʻo fakaʻaongaʻi he taimi ʻe niʻihi ʻa e socket ʻo e transistor tester (hFE), ka ʻoku ʻikai ko ha founga angamaheni ʻeni. Ki he tokolahi taha ʻo e kau fakaʻaongaʻi, ʻoku mahuʻinga ʻa e diode mode.

Ngaahi fehalaaki angamaheni ʻi he taimi ʻoku siviʻi ai ʻa e LEDs ʻaki ha Multimeter

Naʻa mo e kau ʻenisinia taukei te nau lava ʻo fai ha ngaahi fehalaaki. Ko e ngaahi faingataʻa lahi taha ʻeni ʻi hono fakaʻaongaʻi ʻo e multimeter ke vakaiʻi ʻa e LEDs:

1. Polarity Hala: Ko hono fetongi ʻo e probes (anode ki he ʻuliʻuli, cathode ki he kulokula) ʻe ʻikai ke ʻi ai ha lau, ʻo faʻifaʻitaki ki ha LED kovi. Fakapapauʻi maʻu pe ʻa e polarity ʻo e foʻi kula.
2. Fakahohaʻasi ʻi he Circuit: ʻE lava ke ʻomi ʻe hono siviʻi ʻo ha LED lolotonga ʻene kei soldered ʻi ha circuit faingataʻa (tautautefito ki he transformers pe ICs kehe) ha ngaahi lau hala koeʻuhi he ʻoku ʻi ai ha ngaahi hala tatau ki he lolotonga. Kapau ʻe lava, hiki hake ha vaʻe ʻe taha ʻo e LED pe toʻo ʻa e solder ke siviʻi totonu.
3. Lau hala ʻa e "OL": ʻI he ngaahi multimeter fakaʻilekitulonika lahi, ʻoku ʻuhinga ʻa e "OL" ki he Open Line. ʻI he diode mode, ʻoku faʻa fakahaaʻi ʻe he meʻa ni ʻoku ʻikai ke tataki ʻa e konga (kovi), ka ʻoku ne toe fakahaaʻi pe ʻoku fehokotaki ʻa e probes ki mui. Toe vakaiʻi hoʻo ngaahi fehokotakiʻanga.
4. Fakakaukau ʻoku ulo kotoa ʻa e LEDs: Hange ko ia naʻe lave ki ai kimuʻa, ʻoku fie maʻu ʻe he LEDs malohi lahi ange ʻa e ʻau ʻi he meʻa ʻoku ʻomi ʻe he multimeter ke tuku atu ʻa e maama ʻoku ʻasi mai. Kapau ʻoku ʻikai ke ke sio ki ha ulo, ka ʻoku fakahaaʻi ʻe he mita ʻa e lau voltage (e.g., 2.5V), ʻoku lelei ʻa e LED.
5. Siviʻi ʻaki ʻa e Power On: ʻOua naʻa teitei fakaʻaongaʻi ʻa e resistance pe diode mode ʻi ha circuit powered. ʻE meimei pau ke puhi ʻe he meʻa ni ʻa e fuse ʻi hoʻo multimeter pe maumauʻi ʻa e mita.

Ko e meʻa ke fai hili hono ʻiloʻi ha foʻi pia LED kuo maumau

Ko hoʻo fakaʻaongaʻi pe hoʻo multimeter pe founga parallel ke maʻu ʻa e LED ʻoku maumau, ʻoku kamata leva ʻa e founga monomono. Ki he SMD LEDs, ʻoku fie maʻu ʻe he meʻa ni ha tuʻuʻanga ʻea vela pe ko ha ukamea soldering lelei. Ki he LEDs ʻi he luo, ʻoku ngaue lelei ʻa e ukamea angamaheni.

Kapau ʻoku ʻikai ke ke maʻu ha konga ke fetongi he taimi pe ko ia, te ke lava ʻo fakanounouʻi fakataimi ʻa e pads ʻo e LED mate (ʻo fakaʻaongaʻi ha kiʻi konga solder pe uaea) ke ngaue ʻa e toenga ʻo e circuit. Neongo ia, ko ha fakaleleiʻi fakataimi pe ʻeni. Koeʻuhi ʻoku faʻa hokohoko ʻa e LEDs, ʻe fakalahi ʻa e ʻau ʻoku tafe mai ʻi he toenga ʻo e fanga kiʻi kula, ʻo tupu ai ʻenau vela mo vave ange ʻenau mate. ʻI hoʻo fakatau pe ha LED foʻou ʻo e ngaahi tuʻunga totonu (voltage mo e lolotonga), fetongi ʻa e nounou ʻaki ʻa e konga foʻou ke toe fakafoki mai ʻa e tuʻunga totonu mo e tolonga ʻo e circuit.

Fakafehoanaki maʻu pe ʻa e mafana ʻo e lanu mo e CRI (Color Rendering Index) ʻo e LED ʻoku fetongi ki he ʻuluaki ʻo kapau ʻoku ke hohaʻa ki he maama maʻu pe.

FAQs ʻi hono ʻiloʻi ʻo e LEDs kuo maumau

Ko e ha ʻa e fakaʻilonga ʻo e diode ʻi ha multimeter?

ʻOku hange ʻa e fakaʻilonga ʻo e diode ko ha tapatolu ʻoku tuhu ki ha laine tuʻu ki ʻolunga (→|). ʻOku faʻa maʻu ia ʻi he tuʻunga tatau ʻo e selector mo e continuity tester (ʻa ia ʻoku hange ha peau ʻo e ongo). ʻOku fakaʻata ʻe hono fili ʻo e founga ko ʻeni ʻa e mita ke ʻave ha kiʻi ʻau siʻisiʻi ʻi ha semiconductor.

Founga hono siviʻi ʻo e SMD LED taʻe ʻi ai ha multimeter?

Kapau ʻoku ʻikai ke ʻi ai haʻo multimeter, te ke lava ʻo fakaʻaongaʻi ha puha ʻuhila (hange ko ha CR2032). Koeʻuhi ʻoku ongoʻingofua ʻa e LEDs ʻi he lolotonga, te ke lava ʻo ala ki he leads ʻo e LED ki he puha ʻuhila (vakaiʻi ʻa e polarity). ʻE ulo lahi ha LED moʻui lelei. Ko ha sivi vave ʻeni ka ʻoku ʻikai ke ne ʻoatu ha fakamatala fekauʻaki mo e voltage ki muʻa pe leakage current.

Ko e ha ʻoku kemo ai ʻeku foʻi ʻuhila LED hili hono fetongi ʻo ha foʻi kula?

ʻOku faʻa fakahaaʻi ʻe he kemo ʻa e fehokotakiʻanga ʻoku homo pe ʻikai tatau ʻa e ngaahi ʻulungaanga fakaʻuhila. Kapau ʻoku kiʻi kehe ʻa e voltage ki muʻa (Vf) ʻo e LED foʻou mei he toenga, ʻoku ʻikai tatau ʻa e tufakiʻanga naunau ʻo e lolotonga ʻi he afo hokohoko, ʻo fakatupu ai ʻa e kemo pe maumau taʻehoko. Feinga maʻu pe ke maʻu ʻa e ngaahi LED fetongi tatau.

Fakafehoanaki ʻo e ngaahi founga ʻo e LED Detection

Ko e taukei ʻi hono fakaʻaongaʻi ʻo e multimeter ke ʻiloʻi ʻa e ngaahi konga LED kuo maumau ko ha potoʻi ngaue mahuʻinga ia ʻoku ne fakahaofi ha paʻanga mo fakasiʻisiʻi ʻa e maumau fakaʻilekitulonika. Tatau ai pe pe ʻoku ke tokangaʻi ʻa e maama fakangaueʻanga pe fakaleleiʻi ha foʻi ʻuhila ʻi ʻapi, ʻoku fakapapauʻi ʻe hono fakatahaʻi ʻo e fua ʻo e ʻuhila mo hono vakaiʻi ʻoku ʻaonga ʻa e ola lelei ʻo e ngaahi monomono.