Tom qab xyoo ntawm txoj kev loj hlob, cov pa ib txwm anode LED tau tsim ib tug ruaj khov kev lag luam saw, tsav lub koob meej ntawm LED zaub.Txawm li cas los xij, nws kuj muaj qhov tsis zoo ntawm qhov screen siab thiab kev siv zog ntau dhau.Tom qab qhov tshwm sim ntawm ntau cathode LED zaub fais fab mov tshuab, nws tau nyiam cov xim zoo hauv LED zaub lag luam.Txoj kev siv hluav taws xob no tuaj yeem ua tiav lub zog txuag ntawm 75%.Yog li dab tsi yog cov cathode LED zaub fais fab mov tshuab?Qhov zoo ntawm cov tshuab no yog dab tsi?
1. Dab tsi yog ib qho cathode LED?
"Common cathode" yog hais txog kev siv hluav taws xob cathode, uas yog ib qho kev txuag hluav taws xob rau LED cov ntxaij vab tshaus.Nws txhais tau hais tias siv cov txheej txheem cathode los ua lub zog rau lub vijtsam LED zaub, uas yog, R, G, B (liab, ntsuab, xiav) ntawm LED teeb hlaws yog powered nyias, thiab tam sim no thiab voltage yog raug faib rau R. , G, B teeb hlaws raws li, vim tias qhov pom kev ua haujlwm voltage thiab tam sim no xav tau los ntawm R, G, B (liab, ntsuab, xiav) teeb hlaws yog txawv.Nyob rau hauv txoj kev no, thawj zaug tam sim no dhau los ntawm lub teeb hlaws thiab tom qab ntawd mus rau qhov tsis zoo electrode ntawm IC, lub zog hluav taws xob rau pem hauv ntej yuav raug txo qis, thiab kev ua haujlwm sab hauv yuav ua me me.
2. Dab tsi yog qhov txawv ntawm cov cathode thiab ntau anode LEDs?
①.Txoj kev siv hluav taws xob sib txawv:
Txoj kev siv hluav taws xob cathode feem ntau yog qhov tam sim no thawj zaug dhau los ntawm lub teeb hlaws thiab tom qab ntawd mus rau qhov tsis zoo ntawm IC, uas txo qis rau pem hauv ntej voltage poob thiab kev ua haujlwm sab hauv.
Qhov sib txawv anode yog tias tam sim no ntws los ntawm PCB pawg thawj coj saib mus rau lub teeb hlaws, thiab muab lub zog rau R, G, B (liab, ntsuab, xiav) sib npaug, uas ua rau muaj qhov loj dua rau pem hauv ntej voltage poob hauv Circuit Court.
②.Sib txawv zog mov voltage:
Common cathode, nws yuav muab tam sim no thiab voltage rau R, G, B (liab, ntsuab, xiav) cais.Cov kev xav tau voltage ntawm liab, ntsuab thiab xiav lub teeb hlaws yog txawv.Qhov voltage yuav tsum tau ntawm cov hlaws teeb liab yog hais txog 2.8V, thiab qhov yuav tsum tau voltage ntawm xiav-ntsuab teeb hlaws yog hais txog 3.8V.Cov khoom siv hluav taws xob zoo li no tuaj yeem ua tiav cov khoom siv hluav taws xob zoo thiab siv hluav taws xob tsawg dua, thiab cov cua sov tsim los ntawm LED thaum ua haujlwm yog qis dua.
Common anode, ntawm qhov tod tes, muab R, G, B (liab, ntsuab, xiav) ib qhov hluav taws xob siab tshaj 3.8V (xws li 5V) rau kev sib koom ua ke fais fab mov.Lub sijhawm no, qhov hluav taws xob tau txais los ntawm liab, ntsuab thiab xiav yog ib qho kev sib koom ua ke 5V, tab sis qhov kev ua haujlwm zoo tshaj plaws uas xav tau los ntawm peb lub teeb hlaws yog qis dua 5V.Raws li lub hwj huam mis P = UI, thaum tam sim no tseem tsis hloov, qhov siab dua qhov hluav taws xob, lub zog siab dua, uas yog, lub zog siv ntau dua.Nyob rau tib lub sijhawm, LED tseem yuav tsim cov cua sov ntau dua thaum ua haujlwm.
CovNtiaj teb no Thib Peb-Tsim Sab Nraud LED Advertising Screen Tsim los ntawm XYGLED, txais yuav cov cathode.Piv nrog rau cov tsoos 5V liab, ntsuab, thiab xiav lub teeb-emitting diodes, lub zoo ncej ntawm lub liab LED nti yog 3.2V, thaum lub ntsuab thiab xiav LEDs yog 4.2V, txo hwj chim noj tsawg kawg yog 30% thiab nthuav tawm lub zog zoo- txuag thiab siv-txo kev ua haujlwm.
3. Vim li cas cov cathode LED zaub ua kom muaj cua sov tsawg dua?
Qhov tshwj xeeb tshaj plaws cathode fais fab mov hom ntawm lub vijtsam txias ua rau LED zaub ua kom muaj cua sov tsawg thiab qis dua thaum lub sijhawm ua haujlwm.Raws li ib txwm muaj, nyob rau hauv lub xeev tshuav nyiaj li cas thiab thaum ua yeeb yaj kiab, qhov ntsuas kub ntawm lub vijtsam txias yog li 20 ℃ qis dua li cov khoom siv sab nraum zoov LED ntawm tib tus qauv.Rau cov khoom ntawm tib yam specifications thiab nyob rau tib lub brightness, qhov screen kub ntawm cov cathode LED zaub yog ntau tshaj 20 degrees qis tshaj li cov pa anode LED zaub cov khoom, thiab lub hwj chim noj yog ntau tshaj li 50% qis tshaj qhov ntawd. ntawm cov pa ntau anode LED zaub cov khoom.
Qhov kub thiab siv hluav taws xob ntau dhau ntawm LED zaub tau ib txwm yog qhov tseem ceeb cuam tshuam rau lub neej kev pab cuam ntawm LED cov khoom lag luam, thiab "cov khoom siv cathode LED" tuaj yeem daws ob qhov teeb meem no tau zoo heev.
4. Dab tsi yog qhov zoo ntawm cov cathode LED zaub?
①.Cov khoom siv hluav taws xob raug yog tiag tiag txuag hluav taws xob:
Cov khoom siv cathode siv cov cuab yeej siv hluav taws xob zoo tswj hwm, raws li qhov sib txawv photoelectric yam ntxwv ntawm peb lub ntsiab xim ntawm LED liab, ntsuab thiab xiav, thiab yog nruab nrog lub ntse IC zaub tswj qhov system thiab tus kheej ntiag tug pwm kom raug faib cov voltages sib txawv. mus rau LED thiab tsav Circuit Court, kom cov khoom siv hluav taws xob yog li 40% qis dua cov khoom zoo sib xws ntawm kev ua lag luam!
②.Kev txuag hluav taws xob tiag tiag coj cov xim tiag tiag:
Cov txheej txheem cathode LED tsav tsheb tuaj yeem tswj tau qhov voltage, uas txo cov kev siv hluav taws xob thiab hluav taws xob.Lub wavelength ntawm LED tsis drift nyob rau hauv kev lag luam tas mus li, thiab qhov tseeb xim yog stably tso tawm!
③.Kev txuag hluav taws xob tiag tiag ua rau lub neej ntev:
Kev siv hluav taws xob txo qis, yog li txo qis qhov kub thiab txias ntawm lub system, txo qhov tshwm sim ntawm LED kev puas tsuaj, txhim kho kev ruaj ntseg thiab kev ntseeg siab ntawm tag nrho cov teeb pom kev zoo, thiab ua rau lub neej ntev ntev.
5. Dab tsi yog txoj kev loj hlob ntawm kev siv tshuab cathode?
Cov khoom txhawb nqa muaj feem xyuam rau cov khoom siv cathode LED zaub, xws li LED, fais fab mov, tsav tsheb IC, thiab lwm yam, tsis paub tab raws li kev lag luam anode LED kev lag luam saw.Tsis tas li ntawd, cov cathode IC series tsis tiav tam sim no, thiab tag nrho cov ntim tsis loj, thaum cov anode feem ntau tseem nyob 80% ntawm kev ua lag luam.
Qhov laj thawj tseem ceeb rau kev ua haujlwm qeeb ntawm kev siv tshuab cathode yog tus nqi ntau lawm.Raws li cov khoom lag luam sib koom ua ke, cov cathode feem ntau xav tau kev sib koom tes ntawm txhua qhov kawg ntawm kev lag luam saw xws li chips, ntim, PCB, thiab lwm yam, uas yog kim heev.
Nyob rau lub sijhawm no ntawm kev hu xov tooj siab rau kev txuag hluav taws xob, qhov tshwm sim ntawm cov cathode pob tshab LED cov ntxaij vab tshaus tau dhau los ua cov ntsiab lus txhawb nqa los ntawm kev lag luam no.Txawm li cas los xij, tseem muaj txoj hauv kev mus ntev mus kom ua tiav kev txhawb nqa thiab kev thov hauv kev nkag siab ntau dua, uas yuav tsum muaj kev sib koom tes ntawm tag nrho cov kev lag luam.Raws li tus qauv ntawm kev txhim kho kev txuag hluav taws xob, cov khoom siv cathode LED zaub screen suav nrog kev siv thiab kev ua haujlwm ntawm cov nqi hluav taws xob.Yog li ntawd, kev txuag hluav taws xob muaj feem xyuam nrog kev txaus siab ntawm LED zaub screen tswv lag luam thiab kev siv lub teb chaws lub zog.
Los ntawm qhov xwm txheej tam sim no, cov khoom siv cathode LED lub zog txuag zaub screen yuav tsis nce tus nqi ntau dhau los piv nrog cov lus pom zoo, thiab nws yuav txuag tau cov nqi hauv kev siv tom qab, uas yog kev hwm los ntawm kev ua lag luam.
Post lub sij hawm: Feb-02-2024
