Kuv xav tau LED tsav tsheb li cas?'Kev tshawb nrhiav cov tsav tsheb LED tuaj yeem nyuaj dua li qhov koj xav nrog ntau yam kev xaiv tawm muaj. Muaj ntau ntau yam los saib thaum xaiv ib qho uas ua haujlwm zoo tshaj rau koj, peb muaj kev sib tw ua tiav ntawm qhov no hauv peb phau ntawv qhia ntawm LED tsav tshebntawm no. Ib qho kev xaiv tseem ceeb yog xaiv tus tsav tsheb tsis tu ncua tam sim no LED piv rau qhov tsis tu ncua voltage LED tsav tsheb. Tam sim no, nws tau paub tias LED tsav tsheb tau suav tias yog cov khoom siv tas li tam sim no, yog li vim li cas cov tuam ntxhab muab cov tsav tsheb tsis tu ncua rau LEDs thiab? Peb tuaj yeem qhia qhov txawv ntawm ob qho no li cas?
Tsis tu ncua tam sim no LED tsav tsheb vs. Tsis tu ncua Voltage LED tsav tsheb
Tsis tu ncua tam sim no thiab tsis tu ncua voltage tsav tsheb yog ob qho tib si siv tau rau kev siv hluav taws xob rau lub teeb ci LED, qhov txawv yog txoj hauv kev uas lawv xa lub zog. LED tsav tsheb yog lub zog tsav tsheb uas muab thiab tswj lub zog tsim nyog kom paub tseeb tias cov LEDs ua haujlwm zoo thiab zoo ib yam. Nkag siab qhov sib txawv ntawm ob hom tuaj yeem:
Pab kom zoo zog LEDs
Zam kev puas tsuaj loj rau koj cov peev txheej LED
Dab tsi yog Tus Tsav Tsheb Nthuav Tawm Tam Sim No?
Cov tsav tsheb LED tsis tu ncua tam sim no yog tsim los rau ntau qhov kev tso tawm hluav taws xob thiab qhov tso tawm tam sim no (mA). LEDs uas tau ntsuas los ua haujlwm ntawm tus tsav tsheb tam sim no yuav tsum tau xaiv cov khoom siv tam sim no feem ntau teev hauv milliamps (mA) lossis amps (A). Cov tsav tsheb no sib txawv ntawm qhov hluav taws xob raws li hluav taws xob hluav taws xob uas tso cai rau tam sim no nyob twj ywm thoob plaws hauv LED.Mean Well's AP Constant Current Driveryog ib qho piv txwv zoo qhia hauv qab no:
Kev ntsuas tam sim no siab dua ua rau LED ci dua, tab sis yog tias tsis tswj hwm, LED yuav kos tam sim no ntau dua li nws tau ntsuas rau. Thermal Runaway hais txog qhov tam sim no ntau dhau ntawm LEDs siab tshaj plaws tsav tam sim no uas ua rau qis qis LED lub neej ntev thiab kub hnyiab ntxov vim qhov kub thiab txias. Tus neeg tsav tsheb tas mus li tam sim no yog txoj hauv kev zoo tshaj plaws los tsav lub zog siab LEDs vim nws tuav lub ci ci zoo ib yam thoob plaws txhua qhov LEDs hauv-series.
Dab tsi yog qhov tsis tu ncua Voltage LED Tsav Tsheb?
Cov tsav tsheb tsis tu ncua yog tsim los rau ib qho hluav taws xob ncaj qha tam sim no (DC) tso zis hluav taws xob. Feem ntau cov tsav tsheb tsis tu ncua (lossis Cov Khoom Siv Hluav Taws Xob) yog 12VDC lossis 24VDC. Ib lub teeb ci LED uas ntsuas qhov ntsuas qhov tsis tu ncua feem ntau qhia txog tus nqi ntawm cov khoom siv hluav taws xob uas nws xav tau los ua haujlwm kom raug.
Lub zog hluav taws xob tas li tau txais cov qauv kab hluav taws xob (120-277VAC). Qhov no yog hom fais fab uas feem ntau tso tawm los ntawm koj lub phab ntsa hluav taws xob nyob ib puag ncig hauv tsev. Tsis tu ncua Voltage Drivers hloov qhov hloov pauv tam sim no (VAC) mus rau qhov tsis tshua muaj hluav taws xob tam sim no (VDC). Tus neeg tsav tsheb yuav ib txwm tuav lub voltage tsis tu ncua txawm hais tias hom kev thauj khoom tam sim no muab tso rau nws. Ib qho piv txwv ntawm qhov tsis tu ncua voltage fais fab mov yog hauv qab noMean Well LPV-60-12.
LPV-60-12 yuav tswj tau qhov 12VDC tas li yog tias qhov tam sim no nyob qis dua 5-amp siab tshaj plaws qhia hauv lub rooj. Feem ntau, cov tsav tsheb tsis tu ncua yog siv nyob rau hauv cov teeb hauv qab txee thiab lwm yamLED flex sawbdaim ntawv thov tab sis nws tsis txwv rau cov pawg.
Yog li kuv yuav ua li cas thiaj paub hom LED tsav tsheb uas kuv xav tau?
Case forconstant currentdrivers:
II Yog tias koj saib cov LEDs siab zog, ib qho cim tshwj xeeb yog kev sib raug zoo ntawm kev siv hluav taws xob rau pem hauv ntej rau LED thiab tam sim no ntws los ntawm nws. Koj tuaj yeem pom qhov no kom meej meej los ntawm cov yam ntxwv hluav taws xob ntawm Cree XP-G2 hauv qab no hauv daim duab 1. Thaum lub LED qhib, txawm tias qhov tsawg tshaj plaws 5% hloov pauv hauv qhov hluav taws xob (2.74V rau 2.87V) tuaj yeem tsim 100% nce tam sim no. tsav mus rau XP-G2 raws li koj tuaj yeem pom ntawm cov cim liab tshwm sim los ntawm 350mA txog 700mA.
Tam sim no siab dua tam sim no ua rau LED ci dua, tab sis nws kuj yuav nws thiaj li dhau-tsav LED. Saib daim duab 2 rau Cree cov kev qhia tshwj xeeb ntawm qhov siab tshaj plaws rau pem hauv ntej tam sim no thiab qhov kev ntsuas qhov nkhaus ntawm qhov sib txawv ntawm qhov kub thiab txias. Hauv qhov piv txwv saum toj no peb tseem yuav ua tau zoo tsav XP-G2 LED ntawm 700mA, txawm li cas los xij, yog tias koj tsis muaj cov cuab yeej txwv tam sim no, LED yuav kos ntau dua tam sim no vim nws cov yam ntxwv hluav taws xob hloov pauv vim qhov kub nce. Qhov no thaum kawg yuav thawb txoj kev tam sim no tshaj qhov txwv ... tshwj xeeb tshaj yog nyob rau hauv ib puag ncig kub. Qhov dhau mus tam sim no yuav ua rau muaj cua sov ntxiv hauv qhov system, txo qis ntawm LEDs lifespan, thiab nws thiaj li ua rau LED puas. Peb hu qhov no thermal runaway uas tau piav qhia ntau ntxivntawm no. Qhov no yog vim li cas txoj kev nyiam ntawm kev siv hluav taws xob siab zog LED yog nrog tus tsav tsheb tam sim no tsis tu ncua. Nrog rau qhov tam sim no tsis tu ncua, txawm tias qhov hluav taws xob hloov pauv nrog qhov kub thiab txias, tus neeg tsav tsheb ua kom lub zog tam sim no tsis dhau tsav lub LED thiab tiv thaiv thermal khiav.
Thaum twg kuv yuav siv qhov tsis tu ncua voltage LED tsav tsheb?
Cov piv txwv saum toj no yog nrog cov LEDs siab zog thiab ntawm qhov me me raws li peb tsuas yog tham txog kev siv ib qho LED. Nrog teeb pom kev zoo hauv lub ntiaj teb tiag tiag, nws tsis yooj yim lossis pheej yig los tsim txhua yam ntawm tes los ntawm ib lub diode, LEDs feem ntau yog siv ua ke hauv seriesand / lossis parallel circuits los tsim cov txiaj ntsig xav tau. Hmoov zoo rau cov tsim teeb pom kev zoo, cov tuam ntxhab tau qhia ntau yam khoom siv LED rau kev lag luam uas muaj ntau lub LEDs twb tau sib sau ua ke xws li LED hlua teeb, LED strips, LED tuav, thiab lwm yam.
LED strips feem ntau yog tsim nrog ib pawg ntawm LEDs nyob rau hauv series nrog ib tug tam sim no-txheej resistor nyob rau hauv txoj kab nrog lawv. Cov tuam txhab tsim khoom kom paub tseeb tias cov resistors yog tus nqi tsim nyog thiab nyob rau hauv txoj hauj lwm zoo kom cov LEDs ntawm cov strips yuav tsis tshua muaj kev sib txawv ntawm qhov voltage raws li peb tau tham nrog XP-G2. Txij li thaum lawv tam sim no tau raug tswj hwm, txhua yam lawv xav tau yog qhov hluav taws xob tas mus li rau lub zog LED (s).
Thaum LEDs los yog ib qho array ntawm LEDs tau tsim zoo li no lawv yuav feem ntau hais txog qhov hluav taws xob yuav tsum tau khiav ntawm. Yog li yog tias koj pom tias koj lub sawb siv 12VDC, tsis txhob txhawj txog tus tsav tsheb tam sim no, txhua yam koj yuav xav tau yog 12VDC qhov hluav taws xob tas li vim qhov tam sim no twb tau tswj hwm los ntawm cov khoom siv hluav taws xob uas cov chaw tsim khoom tau tsim.
Qhov zoo ntawm kev siv tus tsav tsheb tsis tu ncua LED tam sim no
Yog li thaum koj tab tom tsim koj tus kheej fixture los yog ua hauj lwm nrog peb
Yog li thaum koj tab tom tsim koj tus kheej fixture los yog ua hauj lwm nrog pebhigh powered LEDs, nws yog qhov zoo tshaj plaws los siv cov tsav tsheb tam sim no vim:
Lawv tsis txhob ua txhaum qhov siab tshaj plaws tam sim no teev rau LEDs, yog li tsis txhob burnout / thermal runaway.
Lawv yooj yim dua rau cov neeg tsim qauv los tswj cov ntawv thov, thiab pab tsim lub teeb nrog qhov ci zoo ib yam.
Qhov zoo ntawm kev siv lub tshuab hluav taws xob tsis tu ncua LED tsav tsheb
Koj siv lub tshuab hluav taws xob tsis tu ncua LED tsuas yog thaum siv LED lossis array uas tau teev tseg kom coj qee qhov voltage. Qhov no pab tau zoo li:
Qhov hluav taws xob tsis tu ncua yog cov cuab yeej paub ntau dua rau kev tsim thiab kev teeb tsa engineers.
Tus nqi ntawm cov tshuab no tuaj yeem qis dua, tshwj xeeb tshaj yog hauv cov ntawv thov loj dua.
Txais tos kom tuaj saib peb lub Hoobkasqhia rau LED stripsuas muaj ntau yam khoom siv uas tuaj yeem khiav ntawm qhov hluav taws xob tas li. Tsis tas li, yog tias koj xav tau kev pab xaiv tus tsav tsheb LED tam sim no, mus rau peb qhov kev pabncejntawm yuav ua li cas xaiv qhov zoo.
