Yuav Ua Li Cas Txuas LED Sawb? Cov Duab Kos Sib Txuas. Yuav Ua Li Cas Rau Nruab Nws Kom Raug Hauv Chav? DIY Teeb Tsa Daim Kab Xev Diode Ntawm Phab Ntsa

Cov txheej txheem:

Video: Yuav Ua Li Cas Txuas LED Sawb? Cov Duab Kos Sib Txuas. Yuav Ua Li Cas Rau Nruab Nws Kom Raug Hauv Chav? DIY Teeb Tsa Daim Kab Xev Diode Ntawm Phab Ntsa

Video: Yuav Ua Li Cas Txuas LED Sawb? Cov Duab Kos Sib Txuas. Yuav Ua Li Cas Rau Nruab Nws Kom Raug Hauv Chav? DIY Teeb Tsa Daim Kab Xev Diode Ntawm Phab Ntsa
Video: nkauj ntseeg lub qhov tuag loj ua luaj neeg nkag npaum li cas lo nkag tsi puv ntxawm yaj 2024, Plaub Hlis Ntuj
Yuav Ua Li Cas Txuas LED Sawb? Cov Duab Kos Sib Txuas. Yuav Ua Li Cas Rau Nruab Nws Kom Raug Hauv Chav? DIY Teeb Tsa Daim Kab Xev Diode Ntawm Phab Ntsa
Yuav Ua Li Cas Txuas LED Sawb? Cov Duab Kos Sib Txuas. Yuav Ua Li Cas Rau Nruab Nws Kom Raug Hauv Chav? DIY Teeb Tsa Daim Kab Xev Diode Ntawm Phab Ntsa
Anonim

LED strips tau dhau los ua ib feem ntawm lub neej niaj hnub thiab ib puag ncig ua haujlwm ntawm yuav luag txhua tus neeg. Lawv tuav txoj haujlwm tseem ceeb tshaj plaws hauv kev tsim teeb pom kev zoo thiab siv hluav taws xob, hla dhau txawm tias lub teeb pom kev zoo. Qhov kev pab zaum kawg rau lawv kev faib khoom yog ua los ntawm kev nyab xeeb ib puag ncig rau tib neeg thiab ib puag ncig.

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Cov kev cai dav dav

Cov kab hluav taws xob LED, yog tias nws muaj cov ntu sib luag, thiab tsis yog kaum ob ntawm LEDs txuas nrog hauv kab, yuav tsum tau txais lub zog hluav taws xob nrog qhov hluav taws xob ntawm 12 lossis 24 volts. Kev sib txuas sib txuas ntawm ib qho LEDs ntawm ib lub tsheb npav ntawm ob lub xov hlau (tus neeg tsav tsheb) raug tso cai, tab sis tsis pub ntau tshaj kaum ob daim ntawm txhua ntu. Lub zog hluav taws xob ntawm cov rooj sib txoos no tsis pub ntau tshaj 3.3 V.

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Nco ntsoov txoj cai tseem ceeb: txhua lub LED yuav tsum tsis tau txais ntau dua 3.3 V (muab hluav taws xob), txwv tsis pub nws yuav ua kom sov dua … Cua sov mus rau qhov kub ntau dua 60 degrees ua rau poob sai ntawm qhov ci ci. Ib qho LED tsis yog lub teeb ci lossis lub tshuab tso roj: qhov zoo tshaj plaws, nws yuav tsum tsis txhob kub siab tshaj 40 degrees.

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LED sawb sib sau ua ke los ntawm ntu txuas ib qho mus rau lwm qhov yuav tsum tsis txhob ntev dua 15 meters … Tom qab 13 metres, raws li kev coj ua qhia, ntu uas deb tshaj plaws los ntawm lub zog hluav taws xob poob lawv qhov ci, qhov tshwj xeeb no cuam tshuam nrog qhov tuab tuab ntawm txoj kev nqa tam sim no. Qhov no xav tau txuas cov khoom siv fais fab ntxiv ntawm qhov ntev ntawm qhov no.

Thiab lub ntsiab lus ntawm no tsis yog qhov tsis xws luag ntawm cov khoom lag luam: thaum lub zog thauj khoom ntau dhau (hais txog lub zog thiab lub zog tam sim no), cov cua sov ua kom sov, lawv tuaj yeem hlawv tau. Txhawm rau zam qhov kev nkag siab yuam kev no, cov neeg siv mus rau qhov ntsuas hnyav - lawv xa cov kab hluav taws xob mus rau tus nqi hluav taws xob ntau ntxiv: 36, 48, 60, 72 thiab 84 V. Hauv qee kis, nws tuaj yeem hloov mus rau tus qauv 220.

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Txuas cov pab pawg sib txuas loj, txhua qhov uas muaj ob lub rooj sib txoos ntawm 80 qhov zoo ib yam (los ntawm tib pawg) LEDs, ua khub hauv kev sib tw ua ke, tso cai rau koj los daws qhov teeb meem ntawm lub zog poob ntawm cov xov hlau, cov tsav tsheb thiab cov khoom siv hluav taws xob. Qhov tsis zoo yog flicker nrog zaus ntawm 50 hertz, uas nyob rau hmo ntuj, nrog ntev (txog ob peb teev) nyob hauv chav ntawd, ua rau pom kev tsis zoo.

Hauv Asmeskas, qhov twg lub ntsiab hluav taws xob tsis yog 50, tab sis 60 Hz, flickering tsis zoo li thiab hnov zoo li ntawm tsib caug hertz, tab sis nws tseem ua rau qee qhov muag thiab lub hlwb qaug zog ntawm tus neeg siv. Kev tshem tawm ripple tso cai txuas ntxiv qhov tseem ceeb suav nrog lub khoos phis tawj sib txuas (4 qhov hluav taws xob qhov hluav taws xob siab txuas nrog hauv tus choj txuas thiab tsim rau lub zog ntawm ib puas watts, thiab lub tshuab hluav taws xob polarized txuas nrog ua ke ntawm cov zis).

Lub rooj sib txoos tau ntsuas rau 400 V - yuav luag ob npaug ntawm lub hauv paus rau 220.

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Yuav ua li cas rau nruab nrog fais fab mov?

Kho qhov sib txuas ntawm lub diode kom raug nrog lub zog siv, ua raws li hauv Circuit Court, tsuas yog ib nrab ntawm kev sib ntaus sib tua. Kev teeb tsa teeb pom kev zoo LED yog kev suav ntxiv ntawm lub zog thiab qhov ntev ntawm cov khoom siv cable.

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Sib dhos cov kab

Feem ntau, cov kab hluav taws xob nws tus kheej tsis tas yuav tsum tau sib sau ua ke. Cov no yog ob lub tshuab hluav taws xob sib cais los ntawm ib leeg, los ntawm qhov uas cov hluav taws xob sib hloov hluav taws xob tau muab rau lub zog siv. Ib qho 220-volt cov tswv yim txuas nrog nws, lub ntsaws rau lub qhov hluav taws xob tau muab tso rau ntawm lwm qhov kawg ntawm kab ntawv, lossis kev siv lub tshuab fuse-hloov tsis siv neeg tau txuas nrog kev so hauv kab uas ncaj qha mus rau lub vaj huam sib luag hloov.

Kev tsim tawm ntawm lub zog siv siv ntu luv luv ntawm tib lub xov tooj (lub zog ntawm lub zog hluav taws xob kuj tsim nyog thiab ua tau zoo ntawm no) tau pub rau cov lus nkag ntawm thawj ntu ntawm kab xev.

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Kev sib txuas rau chav tsev

12 lossis 24 volt fais fab mov - muaj cov qauv hloov pauv. Kev hloov pauv yog qhov tsim nyog rau kev sib cais ntawm galvanic, yam tsis muaj kab uas cov khoom sib txuas ntawm LED txuas nrog yuav suav tias yog xwm txheej txaus ntshai: txawm tias qhov hluav taws xob poob qis rau xoom volts ntawm qhov hloov pauv ntawm lub zog hloov hluav taws xob yuav ua rau muaj hluav taws xob raug mob heev.

Nws yog ib qho tseem ceeb tsis txhob sib xyaw ua ke kom cov khoom siv thiab cov khoom siv hluav taws xob hloov pauv . Txwv tsis pub, luv Circuit Court yuav tshwm sim (lub fuse tsis siv neeg yuav txiav tawm txoj kab), thiab lub zog hluav taws xob yuav hlawv tam sim ntawd. Qhov tseeb yog lub hauv paus ntsiab lus - lub kho hluav taws xob tseem ceeb, hloov pauv zaus, hloov HF thiab hloov kho qhov kawg nrog lub ntsuas hluav taws xob - nyob hauv daim duab hluav taws xob xa hluav taws xob daim duab hauv txoj kev no - thiab tsis hloov pauv, qhov kev sib txuas tsis raug yog tsis zam txim.

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Kuaj

Hauv qhov yooj yim tshaj plaws, kev sib dhos LED yuav tsum ci ci. Yog tias qhov tso cai tso cai ntawm lub zog siv hluav taws xob tsis sib xws nrog cov kab xev siv hluav taws xob, nws yuav ci tsis muaj zog, thiab lub zog siv hluav taws xob yuav sov dua .… Piv txwv li, yog tias siv 3 kaum-watt lub teeb ci, tom qab ntawd nws raug nquahu kom xaiv lub zog siv hluav taws xob tsis yog 30 W ("rov qab mus", "ncov", "siab tshaj"), tab sis muab tsawg kawg ob npaug npoo - txog 60 watts xa mus rau lub nra. Qhov no yuav tiv thaiv nws los ntawm kev ua kom sov dhau - thiab yuav khaws nws lub neej ua haujlwm ntev, ntev.

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Kev koom ua ke ntawm qhov hloov mus rau hauv qaum

Cov hloov hluav taws xob rau cov khoom siv hluav taws xob qis tau tsim los ntawm kev tsim khoom, zoo ib yam li hloov pauv hloov pauv, uas yog qhov yooj yim qhib thiab kaw (nrog qee qhov kev mob siab rau) dua li nws cov neeg ua haujlwm yav dhau los, tso tawm, piv txwv li, nyob rau hauv Soviet lub sijhawm.

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Kev hloov pauv hauv daim ntawv ntawm lub laub-khawm, ib qho nias uas kaw lub Circuit Court, qhov thib ob qhib (thiab ntxiv rau, lub voj voog ntawm kev siv tau rov ua dua), koj tuaj yeem dai nws thaum tawg ntawm txoj hlua thiab kho nws.. Txhawm rau kom yooj yim, hauv qhov chaw tseem ceeb tshaj plaws, kev tsim hluav taws xob tau ua nyob rau hauv daim ntawv ntawm kev sib dhos sib cais - ntawm cov khoom sib txuas.

Cov hloov chaw nyob tsis txawv ntawm qhov hloov pauv chav zoo ib yam - lawv hloov cov hluav taws xob hluav taws xob ntawm cov tswv yim, thiab tsis yog ntawm cov khoom siv hluav taws xob. Lawv ua tiav cov fuse tsis siv neeg - tab sis tsis hloov nws: txoj cai kev nyab xeeb yuav tsum tau ua tas li.

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Rov kuaj dua

Tom qab ua tiav qhov Circuit Court nrog qhov hloov pauv ntxiv, qhib lub rooj sib dhos dua. Nws nyuaj rau ua yuam kev thaum txuas kab - qhov hloov pauv tsuas yog hloov pauv hauv Circuit Court, tsis muaj dab tsi hlawv tawm hauv nws, tsuas yog kaw cov neeg sib cuag . Qhov hloov pauv tsis yog lub cuab yeej siv tsis siv neeg: thaum muaj xwm txheej luv luv, nws feem ntau kub hnyiab (tiv tauj hlawv), nws tsuas yog pab hloov nws nrog qhov zoo sib xws lossis zoo ib yam.

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Installation daim duab nrog dimmer

Lub dimmer adapter tsis yog tsuas yog lub tshuab hluav taws xob sib txuas uas hloov tag nrho tib lub 220 volts rau 12 … 80 volts tsim nyog rau lub zog siv, tab sis ib chav ntxiv uas lub zog hloov pauv ntawm ntau qhov kev xa tawm yog siv lub microcontroller uas tswj me me qhov loj me ntawm cov khoom sib txuas lossis cov hloov hluav taws xob transistor. Txij li transistor hloov pauv tau ruaj khov ntau dua li cov chaw xa khoom (lub tshuab tsom me me tuaj yeem ua tau ntawm kev sib txuas lus sib txuas, thiab lawv hlawv tom qab ntau lab txoj haujlwm), nyob rau xyoo tas los no nws yog tus uas tshem tawm kev tswj hwm.

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Lub dimmer txuas nrog tsis ncaj qha rau lub network, tab sis tom qab lub hwj chim muab. Qhov kev zam yog "lub qhov ntse", hauv kev tswj hwm, zoo ib yam li dimmer, tau ua tiav siv kev sib txuas sib txuas thiab tshem tawm cov ntsaws . Qhov kev xaiv thib ob yog lub dimmer microcontroller tau tsim los rau hauv lub zog hluav taws xob nws tus kheej, tab sis lub hauv paus ntsiab lus ntawm no tseem tsis hloov pauv: nws yog qhov hluav taws xob tso tawm, tsis yog qhov hluav taws xob nkag, uas tau hloov los ntawm lub dimmer module. Dimmer microcontroller tau txais lub zog los ntawm txhua qhov qub, piv txwv li, tus qauv 12 volts.

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Dimmer teeb pom kev zoo yog tsim rau ib-, ob-, peb- thiab plaub-xim kab txaij . Ob qhov kev xaiv kawg yog xim liab, xiav thiab ntsuab lub teeb-emitting diodes (RGB kab xev), ntxiv rau dawb (RGBW teeb sau) tuaj yeem ntxiv ua plaub. Hauv cov xwm txheej tshwj xeeb, ultraviolet thiab / lossis infrared LEDs tau siv rau lub teeb pom kev loj ntawm lub teeb pom kev pom ntawm cov xim sib txawv. UV LEDs yog lub hauv paus ntawm, piv txwv li, cov koom haum disco (cov neeg tuaj saib tuaj hauv cov khaub ncaws zoo nkauj uas ci hauv lub teeb ultraviolet).

IR tau siv nyob rau hauv cov khoom tiv thaiv thiab thaj chaw txwv, nws lub koob yees duab yees pom lub teeb no zoo. UV kuj tseem tuaj yeem ntsais muag (txoj haujlwm tau teeb tsa los ntawm kev qhib lub teeb sib xws), maj mam tua thiab nyem. Lub zog hluav taws xob rau IR feem ntau tau hloov pauv los ntawm lub suab txav ntawm lub koob yees duab yees duab - lossis ua haujlwm tsis tu ncua: Nws tsis muaj kev nkag siab hloov IR LEDs nrog dimmer ua haujlwm nyob rau hauv hom kev yuam.

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Txhawm rau txuas lub dimmer rau lub teeb hluav taws xob hluav taws xob Circuit Court, ua cov hauv qab no:

  • txuas lub network cable rau lub zog siv hluav taws xob (220 V input) , siv qhov hloov pauv dav dav thiab / lossis fuse tsis siv neeg;
  • txuas cov kab hluav taws xob (12V) mus rau lub tswv yim ntawm dimmer block;
  • txuas dimmer tswj outputs mus rau qhov sib thooj "xim" log ntawm qhov nkag ntawm lub teeb ci.

Lub rooj sib txoos tau npaj txhij, sim nws . Nyuaj, cov tes hauj lwm sib txuas, qhov twg siv ntau dua ib lub zog siv hluav taws xob, ntau dua ib lub dimmer, tau teeb tsa ntawm nws tus kheej, hauv tib yam lossis sib txawv.

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Ib qho ntxiv, lub dimmer tuaj yeem muaj tus txais rau IR lossis xov tooj cua tswj chaw taws teeb (raws li txoj cai, Nano lossis Bluetooth hloov), thiab cov tswj vaj huam sib luag nws tus kheej tau muab rau hauv cov khoom siv. Muaj kev paub txog cov neeg siv hauv tsev ua ke sib sau ua ke lub zog dimmer, ntxiv rau txoj hauv kev no - kev ywj pheej hauv kev xaiv hom ci, lub teeb ci teeb lub sijhawm ua haujlwm, muaj peev xwm tswj nws nyob deb, ntawm Is Taws Nem, thiab lwm yam.

Qhov dav yog ntau yam: lub tebchaws lossis lub tebchaws, tsev, chav ua lag luam. Thiab thaum siv cov kab hluav taws xob tsis muaj dej puv nrog silicone (chav IP -69), - pas dej lossis chav hnav khaub ncaws hauv chav da dej lossis sauna, teeb pom kev sab nraum zoov ntawm xov tooj cua lossis TV ntauwd, teeb pom kev ntawm cov ntawv tshaj tawm lossis cov paib.

Dimmer teeb pom kev yog qhov pom kev thiab muaj txiaj ntsig zoo rau kev tshaj tawm koj lub lag luam lossis lub khw muag khoom muag.

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Khoos phis tawj-Txhim Kho

Lub rooj sib txoos LED tau siv hluav taws xob feem ntau los ntawm 3 volts, thaum LEDs dawb, liab, ntsuab, xiav thiab lwm yam LEDs - nruab nrab los ntawm 2 volts. Qhov chaw nres nkoj USB ntawm PC lossis laptop yuav muab 5 V, nrog tam sim no tsis pub ntau tshaj ib nrab ampere. Qhov no txhais tau tias, coj los ntawm txoj cai tswj hwm lub zog, lub teeb ci yuav tsum tsis txhob haus ntau dua 300 milliamperes. Txhawm rau txo cov khoom siv hluav taws xob, cov txheej txheem hauv qab no tau siv:

  • kev sib txuas ntawm cov xim LEDs ua khub, nrog kev sib txuas sib txuas ntawm cov khub no;
  • kev sib txuas sib txuas ntawm cov LEDs dawb los ntawm kev txo qis -voltage hloov pauv ruaj khov, damping diodes (tab sis tsis yog cov tiv thaiv - lawv siv lub zog tseem ceeb rau lawv cov cua sov vim qhov poob qis thaum lub zog qhib).
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Qhov tseeb yog tias los ntawm 5 volts, dawb LEDs yuav yooj yim hlawv tawm. Kev tso cai rau lawv yog qhov hluav taws xob txog li 3, 3, ntawm qhov siab dua - lawv tau ua kom sov ntau vim yog lub zog tam sim no dhau los ntawm lawv, uas dhau qhov ntsuas kev ua haujlwm tau teev tseg hauv daim ntawv hla tebchaws cov ntaub ntawv ntawm ib hom tshwj xeeb thiab qauv ntawm lub teeb pom kev zoo . Qhib lawv hauv koob (peb tau txais qhov hluav taws xob ntawm 2.5 V rau txhua tus) - lawv nyuam qhuav ci thiab siv tsis tau muab lub teeb.

Txhawm rau ua qhov no, koj yuav tsum txo qis zog los ntawm 5 txog 3 V, siv cov khoom siv kho qhov muag sib txuas, txuas nrog hauv cov saw, lossis siv qhov hu ua. DC-DC hloov pauv (hloov pauv), hloov pauv, piv txwv li, qhov hluav taws xob ntawm 5 … 20 volts rau hauv 1, 5 … 4, 2, thaum cov zis tau teeb tsa los ntawm tus tswj hwm (qhov sib txawv resistor), raws li qhov tsis kam ntawm uas lub rooj tsav xwm microcontroller (hloov pauv) teeb tsa tus nqi xav tau. Koj tuaj yeem kho qhov hluav taws xob tso tawm mus rau 2 lossis 3 volts siv tus ntsia hlau ncaj. Cov neeg siv xaj cov hloov pauv xws li lub teeb ci lawv tus kheej los ntawm Suav cov khw muag khoom - online.

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Yog tias hauv PC lossis khoos phis tawj muaj qhov ntsuas hluav taws xob ntawm 3.3 V (lub zog zoo li no tau siv hauv cov txheej txheem tshiab kawg), tom qab ntawd nws raug tso cai tshem tawm ob peb lub xov hlau ntawm qhov chaw no los ntawm kev khawb qhov ntxiv hauv qhov chaw raug. ntawm rooj plaub . Ntawm no koj xav tau kev paub zoo ntawm yuav ua li cas lub khoos phis tawj tau teeb tsa - yog li kom tsis txhob cuam tshuam nws los ntawm kev ua tsis raug thiab tsis tuaj yeem lees txais lub zog hloov pauv los ntawm tam sim no. Lwm qhov hluav taws xob tuaj yeem raug coj los ntawm rooj plaub ntawm lub kaw lus (lub zog tsim hluav taws xob): 5, 9, 12, 15, 19, 21 volts - raug coj los ntawm yam koj xav tau, tab sis tsis txhob ua kom koj lub zog muaj zog ntau dhau ntawm lub zog thiab tam sim no.

Qee qhov xwm txheej, thaum lub luag haujlwm yog tsim ob qho tseem ceeb thiab teeb pom kev zoo nyob rau tib qho kev tsim, lub roj teeb sib xws (lossis lub roj teeb ntawm cov roj teeb zoo li no) txuas nrog lub zog siv hluav taws xob.

Hauv qee qhov xwm txheej, lub roj teeb zoo li no tuaj yeem ua lub roj teeb hauv lub laptop lossis lub hwj chim tsis cuam tshuam; tsis muaj cov khoom tsis tsim nyog pom, vim tias lub roj teeb hauv ob qho tib si tau teeb tsa sab hauv PC los ntawm cov khw.

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Yuav ua li cas kom ruaj khov?

Hauv chav, cov hlua LED tuaj yeem lo rau ntawm cov ntawv ntsa. Ua-nws-koj tus kheej nrawm ntawm PSU twb tau hais txog kev siv cov txuas txuas ntxiv. PSU tuaj yeem ntsia tau rau ntawm phab ntsa ua los ntawm ib yam khoom siv (los ntawm ntoo mus rau phab ntsa), hauv cov ces kaum nws tuaj yeem zais hauv qhov tshwj xeeb: rooj plaub sib piv (tsaus ntuj xiav, piv txwv li, tiv thaiv cov xim dawb tom qab ntawm phab ntsa) tuaj yeem ua rau puas tsuaj. pom tag nrho hauv chav. Hauv cov ces kaum, cov khoom siv hluav taws xob feem ntau nyob ib sab ntawm lub khoos phis tawj PC, tom qab ib sab ntawm lub rooj, nws tuaj yeem teeb tsa ncaj qha hauv qab, hauv qab lub rooj saum toj.

Nws tsis pom zoo kom muab cov kua nplaum tso rau ntawm lub qab nthab, nws tsis pom zoo kom muab nws txuas - daim kab xev tuaj yeem tev tawm ntawm cov yas hauv qab nws qhov hnyav. Hauv qhov xwm txheej phem tshaj plaws, zaj duab xis ncab ncab nws tus kheej tau ncab, thiab nws plam nws qhov zoo thiab zoo ib yam. Hauv ib puag ncig chaw ua haujlwm, kab txuas txuas lub zog siv hluav taws xob mus rau lub zog hluav taws xob tuaj yeem teeb tsa hauv cov hlau (tuab-phab ntsa) cov thawv hauv pem teb, ua ke nrog lwm cov kab hluav taws xob muab cov neeg ua haujlwm lub khoos phis tawj, tso rau hauv cov thawv phab ntsa khiav ntawm kaum, tom ntej no hauv pem teb lossis hauv qab qab nthab.

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Qhov zoo nkauj tshaj plaws - thiab laconic - siv qhov zais zais zais, nrog rau cov khoom siv hauv tsev (hauv cov tuab txheej sab nrauv ntawm lub tsev), kom tshem tawm tsis tsuas yog cov thaiv, tab sis kuj yog lub zog hluav taws xob nws tus kheej . Sab nraum, txhua qhov zais, tshwj tsis yog daim kab xev thiab qhov hloov pauv, tsis pom. Txuas cov hlua LED rau hlau yog ib txoj hauv kev uas ntseeg tau thiab ruaj khov tshaj plaws. Hauv phab ntsa, tshwj tsis yog koj ua haujlwm hauv chav ntsuas hluav taws xob lossis X-ray chaw ua haujlwm ntawm tsev kho mob lossis tsev kho mob, kaw nruj nreem ntawm lub tsev uas seem, nws nyuaj nrhiav lub hauv paus hlau.

Tab sis cov rooj tog twg tuaj yeem dhau los ua lub hauv paus - piv txwv li, cov hlau qhia tau qee zaum pom ntawm cov txee dai khaub ncaws. Cov kab xev kaw rau ntawm qhov chaw zoo li ob qho tib si sib haum xeeb (thaj chaw duab tau pom kev zoo) thiab zoo nkauj.

Txawm li cas los xij, daim kab xev ci, uas muaj nws tus kheej txheej txheej, yooj yim tev tawm daim ntawv, duab los qhia (tib daim duab), fiberboard, phab ntsa pleev xim dawb nrog cov txiv qaub zoo ib yam, txij li txhua cov ntaub ntawv no yog ib puag ncig plua plav.

Pom zoo: