Cov Khoom Siv Hluav Taws Xob Rau LED Sawb (cov Hloov Khoom Siv): 12 V Thiab 24 V. Yuav Ua Li Cas Xaiv Qhov Hloov Pauv Rau Lub Diode Sawb? Tsav Tsheb 100 W, 150 W Thiab Lwm Lub Zog

Cov txheej txheem:

Video: Cov Khoom Siv Hluav Taws Xob Rau LED Sawb (cov Hloov Khoom Siv): 12 V Thiab 24 V. Yuav Ua Li Cas Xaiv Qhov Hloov Pauv Rau Lub Diode Sawb? Tsav Tsheb 100 W, 150 W Thiab Lwm Lub Zog

Video: Cov Khoom Siv Hluav Taws Xob Rau LED Sawb (cov Hloov Khoom Siv): 12 V Thiab 24 V. Yuav Ua Li Cas Xaiv Qhov Hloov Pauv Rau Lub Diode Sawb? Tsav Tsheb 100 W, 150 W Thiab Lwm Lub Zog
Video: Kho thiab pauv xov hluav taws xob rau lub ki cua 2-3-2021 2024, Tej zaum
Cov Khoom Siv Hluav Taws Xob Rau LED Sawb (cov Hloov Khoom Siv): 12 V Thiab 24 V. Yuav Ua Li Cas Xaiv Qhov Hloov Pauv Rau Lub Diode Sawb? Tsav Tsheb 100 W, 150 W Thiab Lwm Lub Zog
Cov Khoom Siv Hluav Taws Xob Rau LED Sawb (cov Hloov Khoom Siv): 12 V Thiab 24 V. Yuav Ua Li Cas Xaiv Qhov Hloov Pauv Rau Lub Diode Sawb? Tsav Tsheb 100 W, 150 W Thiab Lwm Lub Zog
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Sab hauv LED teeb pom kev zoo thiab tsim qauv qub daws. LED strips tshwj xeeb tshaj yog nrov nyob rau hauv kev tsim ntawm ncab thiab tshem tawm qab nthab, phab ntsa niches, cov rooj tog zaum lossis duab tha xim . LED strips feem ntau tseem siv los ua kom pom qhov chaw ua haujlwm, piv txwv li, hauv chav ua noj lossis chav dej. Cov cuab yeej tuaj yeem yog xim ib leeg lossis ntau xim. Txhawm rau LEDs ua haujlwm, nws yog qhov tsim nyog los muab lub zog rau lawv siv chav tsev.

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Nws yog dab tsi?

Cov khoom siv hluav taws xob yog cov hloov pauv tam sim no. Lub teeb ci lawv tus kheej tau muag cais thiab tsis txuas ncaj qha rau lub network . Qhov hloov pauv tam sim no ntawm 220 volts los ntawm lub qhov hluav taws xob, thiab lub zog hluav taws xob hloov nws mus rau qhov ncaj qha tam sim no. Lub zog nyob ntawm qhov xav tau thiab hom kab xev nws tus kheej. Cov ntsuas ntsuas ntawm 12 txog 220 V.

Lub adapter tiv thaiv tus qauv los ntawm kev nce hluav taws xob, muab lub zog, thiab tseem tso cai rau koj los tswj qhov ci thiab xim siv cov khoom siv ntxiv.

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Hom kev txheeb xyuas

Nyob ntawm lub hom phiaj thiab kev teeb tsa qhov chaw ntawm lub teeb pom kev, koj yuav xav tau cov khoom siv hluav taws xob sib txawv rau LED sawb. Lub hauv paus ntsiab lus ntawm kev ua haujlwm ntawm lub cuab yeej tuaj yeem ua pulsed, linear thiab transformerless . Cov kab tawm tau tshwm sim ntxov dua li lwm tus thiab yog li ntawd yog qhov muaj kev ntseeg siab tshaj plaws, tab sis kuj tseem ceeb. Lub tshuab hluav taws xob txo qis lub zog rau qhov xav tau, lub rectifier hloov pauv qhov hluav taws xob mus rau qhov hluav taws xob tas li, tus tiv thaiv kom ntseeg tau tias tsis muaj qhov poob.

Pulse systems tau hloov cov kab tawm, lawv cov kev ua haujlwm tau zoo dua, thiab lawv qhov ntev me dua . Lub tshuab hluav taws xob tsim hluav taws xob tsim hluav taws xob nrog zaus ntau dua li ib txwm 50 hertz, yog li tsis muaj suab nrov lossis suab nrov los ntawm cov hloov pauv mem tes. Lub tshuab hluav taws xob hloov pauv tshiab yog qhov tshiab thiab zoo dua li cov uas ib txwm muaj, uas piav qhia qhov me me. Cov block no yog cov nyiam tshaj plaws thiab pob nyiaj siv. Lawv tuaj yeem ua tau nyias thiab me me, tshwj xeeb tshaj yog tias koj xav tau pub cov kab xev tsis ntev dhau.

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Hom kev hloov pauv yam khoom siv tsis tshua muaj siv rau lub zog LEDs . Lawv cov phiaj xwm ntawm kev nqis tes ua yog txo qis qhov hluav taws xob mus rau qhov xav tau ib qho nrog kev ruaj ntseg ntawm qhov tso tawm. Yog li ntawd, qhov kev pom no yog qhov tsis txaus ntseeg tshaj plaws. Lub hwj chim yuav tsum tsis txhob meej pem nrog tus tsav tsheb. LEDs tau siv los ntawm tam sim no thiab yog cov khoom siv hluav taws xob nrog qee qhov tsis kam. Hauv ntej, txhua tus neeg LED hauv Circuit Court "noj" qee qhov nqi ntawm cov hluav taws xob. Yog li tom ntej no tau txais cov khoom noj hauv qab no.

Kom ruaj khov qhov xwm txheej, cov tsav tsheb tau teeb tsa . Lawv ua haujlwm ua ke nrog cov khoom siv hluav taws xob, tswj lub zog thiab tiv thaiv cov ntsiab lus LED los ntawm kev hlawv tawm. Koj yuav tsum tsis txhob txuas daim kab xev ncaj qha los ntawm tus tsav tsheb, lawv cov haujlwm sib txawv los ntawm lub hom phiaj ntawm cov khoom siv hluav taws xob, thiab kev tsim qauv yuav tsis ruaj khov.

Tus tsav tsheb ultra-thin yuav tsis siv chaw ntau dhau, tab sis yuav txhim kho kev ua tau zoo thiab ntseeg tau ntawm lub teeb pom kev.

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Los ntawm cov cua txias

Muaj ob txoj hauv kev rau kev ua kom txias rau lub system: nquag thiab tsis muaj zog. Hauv thawj kis, tus kiv cua tau teeb tsa hauv lub tshuab hloov pauv, hauv qhov thib ob, cov qauv zoo ib yam li lub khoos phis tawj tsis tu ncua thiab tso cua sov los ntawm rooj plaub. Kev txias txias yog qhov zoo tshaj rau lub teeb pom kev zoo uas yuav ua haujlwm ntev lossis txawm tias tas mus li . Ib qho piv txwv yog kev kho kom zoo nkauj ntawm lub khw qhov rais, qhov rai, teeb pom kev sab hauv hauv chav.

Tab sis lub cav yuav ua suab nrov - yog tias tsis muaj lwm lub suab los hauv chav, lub suab nrov yuav ua rau muaj kev thab plaub . Chav nyob nrog txias txias yog qhov tsim nyog rau kev siv hauv tsev nrog kev sib hloov tsis tu ncua, piv txwv li, rau kev ua kom pom qhov chaw ua haujlwm.

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Los ntawm kev ua tiav

Muaj cov thaiv ntawm qib sib txawv ntawm kev qhib siab. Cov hloov pauv uas tsis yog-hermetic muaj qhov ua kom zoo, uas tso cai rau cov khoom kom txias ib txwm muaj. Kev tsim qauv ntawm lub rooj tsav xwm luam tawm tau muaj qhov ntev heev, yog li koj yuav tsum xav ua ntej txog qhov chaw rau teeb tsa . Ib qho ntxiv, nws tsis pom zoo kom teeb tsa cov thaiv sab hauv phab ntsa lossis npog nrog cov vaj huam sib luag zoo nkauj vim tias yuav muaj cua sov ntau dua. Plua plav nyob ntawm cov txheej txheem sai dua. Tab sis cov khoom siv tau yooj yim thiab tsis nyiam - muaj ntau tus qauv ntawm lub khw nrog lub zog tso tawm los ntawm 6 txog 400 watts. Cov txheej txheem xau yog pheej yig dua li analog thiab tsis tshua tawg.

Cov khoom siv hluav taws xob ib nrab yog tiv thaiv sab nrauv los ntawm cov ntaub yas los ntawm cov khoom txawv teb chaws thiab av . Lawv yog cov me dua li yav dhau los thiab muaj lub zog tso tawm ntawm 60 watts, vim tias nws tsis muaj peev xwm los tsim cov khoom ntawm kev ua haujlwm qis dua. AC adapters tseem yog ib hom kev ntim lub zog ntim nruab nrog lub ntsaws rau txuas ncaj qha rau lub qhov hluav taws xob. Lawv zoo ib yam li cov roj teeb zoo ib yam, me me heev thiab, vim lawv qhov loj me, muaj peev xwm txhawb nqa qhov hluav taws xob tsis siab dua 24 W. Cov thaiv ntim tau zoo dua tiv thaiv los ntawm ib puag ncig cuam tshuam. Lawv tsis txawv qhov loj me los ntawm ib nrab hermetic; nyob ntawm qhov ntsuas hluav taws xob, lawv tuaj yeem muaj ob qhov xwm txheej ntawm rooj plaub. Cov qauv siv hluav taws xob qis tau ntim rau hauv cov yas, thiab cov muaj zog loj nyob rau hauv ib qho txhuas.

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Txhua yam khoom lag luam raug cim nrog qib kev tiv thaiv. Koj tuaj yeem pom nws los ntawm cov ntawv luv IP nrog ob tus lej tom qab. Cov lej suav txij li IP 00 (tsis muaj kev tiv thaiv) mus rau IP 68 (tiv thaiv tag nrho los ntawm hmoov av thiab noo noo). Thawj tus lej qhia txog kev tiv thaiv kev ua qias tuaj - los ntawm xoom mus rau rau, tus thib ob - noo noo permeability, los ntawm xoom mus rau yim. Ntawd yog, cov cim yuav tsum tau nyeem ntawm sab laug mus rau sab xis: piv txwv li, IP 12 txhais tau tias kev tiv thaiv qis tiv thaiv av (1), thiab qib tiv thaiv tiv thaiv ya raws 2. Txog cov khoom siv hluav taws xob rau cov hlua LED, feem ntau koj yuav pom peb qhov kev hloov pauv:

  • IP 20 - lub kaw lus muaj qhov qhib qhov rooj nrog qhov ntxig loj, tiv thaiv los ntawm kev nkag los ntawm cov khoom loj, tsis muaj kev tiv thaiv los ntawm ya raws;
  • IP 54 - lub tshuab hloov pauv tau kaw ib nrab, nws tsis ntshai dej tawg thiab nkag los ntawm ib qho twg, qib ntawm hmoov av yog qhov tsawg heev;
  • IP 67 lossis 68 - lub tsev kaw tau tiv thaiv tag nrho cov khoom los ntawm kev cuam tshuam, mus txog rau hauv kev tso dej tag nrho, nws tuaj yeem siv hauv pas dej da dej, sab nraum zoov, hauv chav ntub dej, da dej.
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Yog tias koj xav tau lub hwj huam kab xev luv luv, koj tuaj yeem xaiv lub roj teeb uas siv hluav taws xob . Yog lawm, nws yuav qis zog thiab lub sijhawm luv, tab sis yog tias peb tab tom tham txog teeb pom kev zoo nkauj zoo nkauj, tom qab ntawv qhov kev xaiv no tuaj yeem txuag hnub. Tshwj xeeb tshaj yog tias nws tau npaj los teeb tsa lub xov tooj ntawm tes.

Roj teeb siv tau siv rau teeb pom kev zoo, khoom plig, duab puab, phab ntsa lossis duab kos.

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Los ntawm kev ua haujlwm

Cov qauv yooj yim tshaj plaws ntawm cov cuab yeej siv hluav taws xob tsuas yog cuam tshuam nrog hloov AC rau DC. Cov qauv qib siab muaj qhov ua kom dimmer . Ntawd yog, koj tuaj yeem hloov qhov ci ntawm lub teeb pom kev zoo kom siab dua lossis qis dua. Rau cov kab xev xim, koj yuav tsum xaiv tus qauv nrog tus tswj, lossis nruab nws ntxiv. Nws yog tus tswj hwm uas yog lub luag haujlwm hloov pauv xim, hom, ntsais muag lossis cuam tshuam ntawm lub tshuab treadmill. Thiab tseem yog qhov kev xaiv ntxiv rau IPs kim dua yuav yog qhov muaj cov chaw taws teeb tswj los ntawm cov chaw taws teeb tswj.

Yooj yim heev yog tias koj xav hloov xim, ci ci, lub teeb pom kev zoo rov qab . Tshwj xeeb tshaj yog thaum koj txiav txim siab tias lub zog hluav taws xob feem ntau zais los ntawm qhov muag qhov muag rau lub hom phiaj zoo nkauj. Kev tswj chaw taws teeb tsuas yog tsim nyog kom muaj kev nkag mus rau txhua qhov chaw. Cov qauv raug tswj ntawm lub xov tooj cua lossis siv hluav taws xob hluav taws xob, piv txwv li, hauv kev tswj chaw taws teeb ntawm TVs thiab lwm yam khoom siv hauv tsev. Yog tias koj tsis npaj yuav ua haujlwm nyob ib ncig ntawm lub moos, ua tib zoo saib ntawm lub zog hluav taws xob nrog hloov. Feem ntau nws tau teeb tsa ntawm qhov nkag mus rau lub kaw lus kom lub adapter hloov pauv tsis ua haujlwm tas li txawm tias thaum lub teeb kaw lawm.

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Yuav xaiv li cas?

Txhawm rau xaiv lub zog xa khoom, koj yuav tsum txiav txim siab lub hom phiaj ntawm lub teeb pom kev zoo. Thaum lub hom phiaj pom meej, xaiv qhov chaw yooj yim dua. Qhov tseem ceeb tshaj plaws yuav yog qhov ntev ntawm daim kab xev, yog li peb ua tib zoo xav txog cov duab . Rau kev xaiv, peb coj mus rau hauv tus account qhov ntev tshaj plaws ntawm ib ntu. Txhawm rau paub seb lub zog twg koj xav tau rau kab diode, koj yuav tsum suav lub zog. Peb ua tib zoo kawm cov ntim khoom thiab saib cov khoom hluav taws xob xav tau rau daim kab xev. Nws tuaj yeem yog 12 V lossis 24 V. Nws yog qhov tsis tshua pom pom qhov kev tsim kho tshiab tshaj plaws nrog qhov ntsuas ntawm 36 V. Qhov no yog qhov hluav taws xob uas lub zog siv hluav taws xob yuav tsum muab ntawm qhov tso tawm, hloov 220 volts los ntawm qhov hluav taws xob.

12 volts muaj kev nyab xeeb dua 24 volts thiab yog qhov dav tshaj plaws . Kev txiav ntau hauv yav dhau los yog kwv yees li 3 LEDs, lossis los ntawm 2 txog 5 centimeters. Qee zaum koj tuaj yeem pom cov kev xaiv nrog qhov sib npaug tsawg dua.

Ib qho cim tshwj xeeb ntawm daim kab xev yuav qhia koj tias kab txiav nyob qhov twg. Xav txog qhov ntau npaum li cas ntawm kev tso cov cim no los laij qhov ntev ntawm kab xev thaum yuav khoom. Kaum ob-volt kab xev raug muag hauv daim ntawm 5 meters.

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Rau txhua 5 metres ntawm LED sawb, kev sib txuas txuas mus rau lub zog siv tau siv . Qhov no yog qhov deb uas cov kev coj ua ntawm cov LEDs tiv taus. Yog tias koj yooj yim txuas cov ntu ib qho rau lwm qhov, koj yuav pheej hmoo tau txais qhov tsis muaj zog ntau qhov ci ntawm qhov kawg ntawm kab xev dua li thaum pib. Ib qho ntxiv, qhov kev tsim qauv no yuav kub hnyiab tau sai vim yog kev ua txhaum cai thev naus laus zis. Yog li ntawd, qhov kev txiav yog txuas nrog ib qho lossis ntau lub zog khoom siv. Koj tuaj yeem txuas los ntawm ib lossis ob sab ntawm daim kab xev. Qhov kev xaiv thib ob yuav sib faib cov khoom ntawm cov khoom uas muaj tam sim no thiab ua kom lub neej kev pab cuam ntawm cov khoom.

Txhawm rau suav qhov xav tau ntev ntawm cov xov hlau, peb pib los ntawm qhov siab tshaj plaws qhov ntev tau ntawm ib thooj . Qhov kev xaiv zaum kawg yog cuam tshuam los ntawm kev poob hluav taws xob nyob ntawm qhov ntev. 24-volt tapes poob qhov hluav taws xob tsawg dua, uas txhais tau tias ntu tuaj yeem ntev dua 5 meters. Ib qho ntxiv, txij li kev siv tam sim no qis dua vim qhov poob qis, tom qab ntawd cov xov hlau rau kev sib txuas yuav thim, nrog rau qhov hnyav ntawm tag nrho cov qauv.

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Ntawm qhov tsis txaus ntseeg, xaiv qhov nqaim tuaj yeem sau tseg, vim tias qhov hluav taws xob ntawm 24 V tsis tshua muaj, thiab cov kab xev zoo li kim dua hauv kev tsim khoom. Qhov ntsuas tom ntej yog kev siv hluav taws xob ib lub 'meter' . Daim duab ncaj qha nyob ntawm qhov ntom ntawm diodes thiab lawv tus lej. Piv txwv li, yog tias lub rooj tsav xwm siv 15 V, tom qab ntawd nrog qhov ntev ntawm 5 meters peb tau txais 75 W xav tau rau lub teeb ci zoo ib yam; 4 meters yuav xav tau 60 watts, thiab ntxiv rau. Cia peb xav tias tag nrho qhov ntev ntawm thaj chaw teeb pom kev zoo yog 20 meters.

Txhawm rau xam lub zog ntawm lub adapter, peb sib zog siv hluav taws xob ntawm ib lub meter ntawm kab xev los ntawm qhov ntev - thiab peb lav peb tus kheej siv lub zog kev nyab xeeb . Peb yuav siv qhov sib npaug li 1.3, uas yog, peb yuav tso 30% paj. Nyob rau hauv tag nrho, peb muaj 15x20x1, 3 = 390 W yam tsawg kawg nkaus. Tau kawg, daim duab yuav dhau los ua qhov tsis suav nrog. Tom qab ntawd peb hloov nws mus rau qhov ze tshaj plaws. Piv txwv li, txog li 100 W, 150 W lossis 250 W. Hauv peb qhov xwm txheej, 390 yog sib npaug rau 400 watts, thiab ntxiv rau. Rau cov kab xev xim, lub hauv paus ntsiab lus ntawm kev suav yuav zoo ib yam. Xav txog qhov loj me ntawm tus adapter txhawm rau xaiv qhov chaw cais kom tso nws.

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Cov lus qhia txog kev sib txuas

Thaum qhov ntev thiab lub zog raug suav, nws yog nyob ntawm kev teeb tsa. Ua tib zoo saib cov cim ntawm daim kab xev nws tus kheej . Ntxiv rau qhov qhia txog kab txiav, cov cim yuav qhia qhov sib npaug "+" lossis "-" ntawm txhua sab ntawm kev txiav. Ntawm cov xim ntau xim, qhov sib txawv tau qhia rau txhua xim, thiab qhov sib ntxiv uas tau hais los ntawm "V +". Kev sib dhos ntawm cov kab hluav taws xob LED tau nqa tawm ntawm nyias cov ntawv txhuas. Cov khoom siv pab kom tshem tawm cov cua sov ntau dhau thaum lub sijhawm ua haujlwm ntawm lub teeb nraub qaum. Qhov no yog txhawm rau tiv thaiv kev kub hnyiab thiab kev puas tsuaj ntawm diodes.

Tshwj xeeb tshaj yog qhov tseem ceeb rau siab IP tsis muaj kab xev . Cov khoom lag luam no tau ntim nrog silicone txhawm rau tiv thaiv kom tsis txhob kis mus rau ib puag ncig. Ua ntej txuas, silicone tau ua tib zoo thiab ua tib zoo ntxuav los ntawm kev sib cuag. Cov ntaub ntawv yog ncaj los yog lub kaum ntse ntse, nrog cov yas tsis sib xws lossis pob tshab diffusers. Thiab tseem lub diffuser tiv thaiv cov kab xev los ntawm kev puas tsuaj. Yog tias qhov kev ncua deb ntawm LEDs zoo, matte diffuser pab ua kom txoj kab du, txhawm rau txo qhov cuam tshuam ntawm cov teeb pom kev ntawm tus kheej.

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Txhawm rau txuas lub teeb pom kev, ntxiv rau daim kab xev nws tus kheej, qhov profile thiab chav tswj hwm, peb xav tau cov xov hlau los txuas rau ntu . Rau daim kab xev 12-volt, peb lub hauv paus txuas cov xov hlau nrog ntu hla ntawm 1.5 millimeters tau siv, thiab rau 24 V, 0.75 mm yuav txaus. Ua ntej koj yuav tsum tau muab lub zog 220 V rau qhov chaw teeb tsa. Yog tias koj tsis npaj yuav nruab daim kab xev nrog lub ntsaws, tom qab ntawd lub teeb hloov tau teeb tsa ncaj qha ntawm 220 V, thiab tsis yog nyob ntawm daim kab xev. Txoj hauv kev no tus hloov pauv yuav tsis ua haujlwm txhua lub sijhawm txawm tias lub teeb pom kev zoo kaw.

Tom ntej no, lub zog siv hluav taws xob ntawm lub zog xav tau lossis ntau lub zog siv tau raug teeb tsa, nyob ntawm qhov kev xaiv los ua ke. Xav ua ntej txog qhov chaw thaiv . Qee cov qauv muaj qhov hnyav thiab qhov loj. Tej zaum koj yuav xav tau lub txee lossis niche ntxiv rau koj lub cuab yeej. Rau cov hloov pauv nrog cov tsev qhib, tsis txhob teeb tsa hauv qhov chaw uas thaiv qhov nkag mus ntawm cov cua txias.

Raws li lub npe ntawm lub hwj chim muab, txuas xoom, theem thiab hauv av rau chav tsev. Feem ntau, cov txuas txuas raug xaiv L, N thiab Re, feem.

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Ntxiv mus, cov zaub mov tau muab rau daim kab xev nws tus kheej. Koj tuaj yeem txuas cov xov hlau lossis siv cov khoom txuas tshwj xeeb . Cov neeg sib tiv tau yooj yim heev, tsis txhob ua kom sov ntau dua thaum siv lub sijhawm ua haujlwm ntawm cov hlau txuas yuav tsum tsis pub ntau tshaj 10 vib nas this. Qhov no yuav txaus rau kev sib txuas zoo thiab muag heev. Nyob ntawm lub zog ntawm daim kab xev, siv ib txoj kev lossis ob txoj hauv kev txuas. Ntawm qhov kev ncua deb loj, qhov siab tshaj plaws tuaj yeem ua tau ntev ntawm cov kab xev tau txuas nrog ua ke mus rau lub zog hluav taws xob nrog cov xov txuas. Yog tias koj tab tom siv RGB sawb, nco ntsoov tias cov qauv ntawm LEDs ua rau cov kab ntawv qis dua li cov kab xim ib leeg. Hauv ib qho diode loj, muaju ntawm cov xim liab, ntsuab thiab xiav nyob ua ke.

Yog li ntawd, hauv hom sib txawv, tsis yog txhua lub teeb nyob rau tib lub sijhawm, tab sis tsuas yog cov muaju tsim nyog . Txhawm rau tswj cov xim thiab hom teeb, koj xav tau tus tswj hwm sib cais lossis lub zog siv hluav taws xob nrog lub tshuab ua haujlwm. Ib qho RGB amplifier tseem tuaj yeem ua ke. Cov no yog cov cuab yeej me me uas tau teeb tsa sib npaug nruab nrab ntawm kab xev ntev thiab txuas ncaj qha rau lub zog siv. Cov amplifiers txo qhov thauj khoom ntawm tus tswj thiab faib qhov hluav taws xob sib npaug raws qhov ntev ntawm daim kab xev xim. Thaum txhim kho daim kab xev xim, ua ntej txuas lub zog fais fab, tom qab ntawd tus tswj hwm thiab twb tau ua rau nws - daim kab xev. Lub hauv paus ntsiab lus ntawm kev txhim kho ntau ntu tau khaws cia, lawv siv kev sib txuas sib txuas mus rau ib lossis ntau lub zog siv hluav taws xob.

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