1. Taw qhia
Cov ntsiab lus tseem ceeb ntawm LED zaub yog lub teeb-emitting diode (LED), uas, zoo li tus qauv diode, muaj cov yam ntxwv ntawm kev coj mus tom ntej - txhais tau tias nws muaj qhov zoo (anode) thiab qhov tsis zoo (cathode) davhlau ya nyob twg. Nrog kev xav tau ntawm kev lag luam ntau ntxiv rau cov lus qhia LED, xws li kev ua neej ntev, kev sib luag, thiab kev siv hluav taws xob, kev siv cov cathode thiab cov anode configurations tau dhau los ua ntau yam kev siv. Txhawm rau pab koj nkag siab zoo dua ob lub thev naus laus zis no, kab lus no yuav muab cov ncauj lus kom ntxaws txog lawv cov kev paub txog.
2. Qhov txawv tseem ceeb ntawm Common Cathode thiab Common Anode
Hauv kev teeb tsa cathode, tag nrho LED cathodes (tsis zoo terminals) sib koom kev sib txuas, thaum txhua tus anode yog tus kheej tswj los ntawm voltage. Nyob rau hauv sib piv, cov anode configurations txuas tag nrho cov LED anodes (zoo terminals) mus rau ib tug sib koom taw tes, nrog ib tug neeg cathodes tswj los ntawm voltage tswj. Ob txoj kev yog siv nyob rau hauv txawv Circuit Court tsim scenarios.
Kev siv fais fab:
Nyob rau hauv ib qho anode diode, qhov dav dav dav txuas nrog rau qib siab voltage thiab tseem ua haujlwm thaum twg yuav tsum muaj qhov siab voltage. Ntawm qhov tod tes, nyob rau hauv ib qho cathode diode, qhov dav dav dav txuas nrog rau hauv av (GND), thiab tsuas yog ib qho diode tshwj xeeb yuav tsum tau txais qhov hluav taws xob siab los ua haujlwm, txo hwj chim noj. Qhov kev txo qis hauv kev siv hluav taws xob no yog qhov tshwj xeeb tshaj yog rau cov LEDs uas siv rau lub sijhawm ntev, vim nws pab txo qhov ntsuas kub.
Complexity ntawm Circuit Court:
Feem ntau, nyob rau hauv kev siv engineering siv, cov cathode diode circuits feem ntau yuav nyuaj dua li cov anode diode circuits. Cov kev teeb tsa anode tsis tas yuav tsum muaj ntau txoj kab hluav taws xob ntau rau kev tsav tsheb.
3. Hom Cathode
3.1 Cathode yog dab tsi
Ib qho cathode configuration txhais tau hais tias qhov tsis zoo terminals (cathodes) ntawm LEDs txuas ua ke. Nyob rau hauv ib qho cathode circuits, tag nrho cov LEDs lossis lwm yam khoom siv tam sim no muaj lawv cov cathodes txuas nrog cov ntsiab lus sib koom, feem ntau hu ua "av" (GND) lossis cov cathode.
3.2 Txoj Cai Ua Haujlwm ntawm Common Cathode
Tam sim no Flow:
Nyob rau hauv ib qho cathode Circuit Court, thaum ib los yog ntau tshaj cov zis terminals ntawm cov tswj Circuit Court muab ib tug high voltage, cov coj LEDs los yog Cheebtsam 'anodes yog activated. Lub sijhawm no, tam sim no ntws los ntawm cov cathode (GND) mus rau cov khoom siv hluav taws xob 'anodes, ua rau lawv teeb lossis ua lawv txoj haujlwm.
Tswj Logic:
Lub Circuit Court tswj tswj lub xeev ntawm txhua LED lossis lwm yam khoom siv (rau lossis tawm, lossis lwm lub xeev ua haujlwm) los ntawm kev hloov cov theem voltage (siab lossis qis) ntawm nws cov khoom siv hluav taws xob. Hauv ib qho cathode Circuit Court, qib siab feem ntau qhia txog kev ua kom (teeb pom kev lossis ua haujlwm), thaum theem qis qhia tias tsis ua haujlwm (tsis teeb pom kev lossis tsis ua haujlwm).
4. Common Anode
4.1Common Anode yog dab tsi
Ib qho anode configuration txhais tau hais tias qhov zoo terminals (anodes) ntawm LEDs txuas ua ke. Nyob rau hauv xws li ib tug Circuit Court, tag nrho cov muaj feem xyuam nrog (xws li LEDs) muaj lawv cov anodes txuas nrog ib qho anode point, thaum txhua lub ntsiab lus cathode txuas nrog cov zis sib txawv ntawm cov tswj Circuit Court.
4.2 Txoj Cai Ua Haujlwm ntawm Common Anode
Tswj tam sim no:
Nyob rau hauv ib qho anode Circuit Court, thaum ib los yog ntau qhov tso zis terminals ntawm cov tswj Circuit Court muab ib tug tsawg voltage, ib txoj kev yog tsim nyob rau hauv lub cathode ntawm cov coj LED los yog cov khoom thiab cov feem ntau anode, cia tam sim no ntws los ntawm lub anode mus rau cathode, ua rau cov tivthaiv kom teeb lossis ua nws txoj haujlwm. Conversely, yog hais tias lub output davhlau ya nyob twg nyob rau ntawm ib tug high voltage, lub tam sim no tsis tuaj yeem dhau mus, thiab cov khoom tsis teeb.
Kev faib tawm Voltage:
Nyob rau hauv daim ntawv thov zoo li cov anode LED zaub, txij li tag nrho cov LED anodes txuas ua ke, lawv muab tib qhov voltage. Txawm li cas los xij, txhua lub LED lub cathode yog tswj hwm ntawm nws tus kheej, tso cai rau kev tswj xyuas meej ntawm txhua lub teeb ci los ntawm kev kho qhov tso zis hluav taws xob thiab tam sim no los ntawm kev tswj xyuas Circuit Court.
5. Qhov zoo ntawm Common Anode
5.1 Siab tso zis tam sim no muaj peev xwm
Common anode circuit structures yog qhov nyuaj, tab sis lawv muaj peev xwm ntau dua tam sim no. Cov yam ntxwv no ua rau cov khoom siv hluav taws xob zoo sib xws rau cov ntawv thov uas xav tau lub zog hluav taws xob siab, xws li cov kab xa hluav taws xob lossis cov tsav tsheb muaj zog LED.
5.2 Zoo heev Load Balancing
Nyob rau hauv ib qho anode Circuit Court, txij li tag nrho cov Cheebtsam sib koom ib qho anode point, cov zis tam sim no yog sib npaug sib npaug ntawm cov khoom. Lub peev xwm ntsuas qhov ntsuas no pab txo cov teeb meem tsis sib haum, txhim kho tag nrho cov txiaj ntsig thiab kev ruaj ntseg ntawm lub voj voog.
5.3 Flexibility thiab Scalability
Common anode circuit designs tso cai rau hloov tau yooj yim ntxiv lossis tshem tawm cov khoom yam tsis tas yuav tsum muaj kev hloov pauv tseem ceeb rau tag nrho cov qauv hauv Circuit Court. Qhov yooj yim thiab scalability no muab qhov txiaj ntsig zoo hauv cov txheej txheem nyuaj thiab cov ntawv thov loj.
5.4 Simplified Circuit Design
Hauv qee qhov kev siv, ib qho kev sib txuas anode tuaj yeem ua kom yooj yim rau tag nrho cov qauv ntawm Circuit Court. Piv txwv li, thaum tsav tsheb LED arrays los yog 7-ntu qhia, ib qho kev sib txuas anode tuaj yeem tswj tau ntau yam khoom siv nrog tsawg tus pins thiab kev sib txuas, txo cov qauv tsim thiab cov nqi.
5.5 Adaptability rau ntau yam tswj cov tswv yim
Common anode circuits tuaj yeem ua raws li ntau yam kev tswj hwm. Los ntawm kev kho cov teeb liab tso zis thiab lub sij hawm ntawm kev tswj xyuas Circuit Court, kev tswj xyuas meej ntawm txhua yam hauv lub voj voog anode tuaj yeem ua tiav kom tau raws li cov ntawv thov sib txawv.
5.6 Txhim kho qhov kev ntseeg tau
Kev tsim ntawm cov anode circuits feem ntau hais txog kev sib npaug ntawm cov khoom sib npaug thiab ua kom zoo dua tam sim no, uas ua rau muaj kev ntseeg tau ntawm tag nrho cov kab ke. Nyob rau hauv kev ua haujlwm ntev thiab kev ua haujlwm siab, cov khoom siv anode muaj kev ruaj khov, txo qis kev ua haujlwm thiab cov nqi kho.
6.Common Anode Teeb Cov Lus Qhia
Xyuas kom meej tias qhov sib txawv anode voltage yog ruaj khov thiab txaus siab rau tsav txhua yam txuas nrog.
Tsim cov zis voltage thiab tam sim no ntau yam ntawm cov tswj Circuit Court kom tsim nyog kom tsis txhob muaj kev puas tsuaj los yog kev ua haujlwm tsis zoo.
Coj mus rau hauv tus account rau pem hauv ntej voltage nco tus yam ntxwv ntawm LEDs thiab xyuas kom meej txaus voltage margin nyob rau hauv tsim.
7. Qhov zoo ntawm Common Cathode
7.1 Muaj peev xwm muaj zog heev
Cov kab hluav taws xob cathode tuaj yeem sib txuas cov teeb liab tawm ntawm ntau yam khoom siv hluav taws xob, ua rau muaj zog tso zis ntau dua. Qhov no ua rau cov cathode circuits tshwj xeeb tshaj yog muaj txiaj ntsig hauv cov khoom siv hluav taws xob siab.
7.2 Versatility
Lub input thiab output terminals ntawm ib qho cathode Circuit Court tuaj yeem txuas nrog dawb, tso cai rau nws siv tau yooj yim rau ntau yam khoom siv hluav taws xob. Qhov no versatility muab ntau cathode circuits nrog ntau yam kev siv nyob rau hauv lub tshav pob ntawm hluav taws xob engineering.
7.3 Kev hloov kho yooj yim
Los ntawm kev kho cov khoom xws li resistors lossis transformers hauv Circuit Court, lub xeev kev khiav hauj lwm thiab cov teeb liab tawm lub zog ntawm ib qho cathode Circuit Court tuaj yeem hloov kho tau yooj yim. Qhov kev hloov kho yooj yim no ua rau cov kab hluav taws xob cathode nrov hauv cov ntawv thov uas xav tau kev tswj hwm ntawm cov teeb liab tawm.
7.4 Fais Fab Kev Tswj Xyuas
Hauv LED zaub daim ntawv thov, cov kab hluav taws xob cathode tuaj yeem faib cov hluav taws xob zoo, txo qis kev siv hluav taws xob. Qhov no tau ua tiav vim tias cov kab hluav taws xob cathode tso cai rau cov khoom siv hluav taws xob ncaj qha raws li txhua qhov LED cov kev cai tshwj xeeb, tshem tawm qhov xav tau ntawm qhov sib faib hluav taws xob thiab txo qis hluav taws xob tsis tsim nyog thiab tsim hluav taws xob. Piv txwv li, cov cuab yeej siv cathode tuaj yeem txo qhov kev ua haujlwm ntawm LED chips los ntawm 4.2-5V rau 2.8-3.3V yam tsis muaj kev cuam tshuam rau qhov ci lossis kev ua haujlwm, uas ncaj qha txo lub zog noj ntawm nplua-pitch LED zaub ntau dua 25%.
7.5 Ua kom pom kev ua tau zoo thiab ruaj khov
Vim qhov txo qis kev siv hluav taws xob, cov kab hluav taws xob cathode feem ntau txo qhov ntsuas qhov ntsuas tag nrho. Lub stability thiab lifespan ntawm LEDs yog inversely proportional rau kub; Yog li ntawd, qhov ntsuas kub qis dua ua rau muaj kev ntseeg siab dua thiab kev ua neej ntev dua rau cov lus qhia LED. Tsis tas li ntawd, kev siv tshuab cathode feem ntau txo cov PCB Cheebtsam, ntxiv dag zog rau kev sib koom ua ke thiab kev ruaj ntseg.
7.6 Precise Control
Hauv daim ntawv thov uas xav tau kev tswj xyuas meej ntawm ntau lub LEDs lossis lwm yam khoom siv, xws li cov lus qhia LED thiab 7-segment qhia, cov cathode circuits ua rau muaj kev ywj pheej ntawm txhua yam. Qhov kev tswj xyuas qhov tseeb no ua rau cov cathode circuits zoo tshaj hauv ob qho tib si kev ua haujlwm thiab kev ua haujlwm.
8. Cov lus qhia txog kev teeb tsa Cathode
Thaum siv cov cathode 7-segment qhia, tsis txhob sib cuag ncaj qha rau saum npoo thiab tuav cov pins kom zoo. Ua tib zoo saib xyuas qhov kub thiab txias thiab lub sijhawm kom ntseeg tau tias qhov zoo ntawm cov khoom. Tsis tas li ntawd, xyuas kom meej tias qhov kev khiav hauj lwm voltage thiab tam sim no sib phim, hauv av cov cathode zoo, thiab xav txog lub microcontroller lub peev xwm tsav tsheb thiab ncua kev tswj. Tsis tas li ntawd, xyuam xim rau cov yeeb yaj kiab tiv thaiv, kev sib raug zoo nrog daim ntawv thov scenario, thiab kev ruaj ntseg ntawm kev sib koom ua ke los xyuas kom meej cov kev ua haujlwm ib txwm muaj thiab txuas ntxiv lub neej ntawm cov cathode 7-segment zaub.
9. Yuav ua li cas txheeb xyuas Common Cathode vs. Common Anode
9.1 Saib cov Pins LED:
Feem ntau, tus pin luv ntawm LED yog cathode, thiab tus pin ntev yog lub anode. Yog hais tias lub microcontroller txuas cov pins ntev ua ke, nws yog siv ib qho anode configuration; Yog hais tias tus pins ntev txuas nrog lub microcontroller's IO ports, nws yog siv cov cathode configuration.
9.2 Voltage thiab LED Status
Rau tib lub LED, nrog tib qhov chaw nres nkoj tso zis voltage, yog "1" teeb rau LED thiab "0" tig tawm, nws qhia tau hais tias ib qho cathode configuration. Txwv tsis pub, nws yog ib qho anode configuration.
Hauv cov ntsiab lus, kev txiav txim siab seb lub microcontroller puas siv cov cathode lossis cov anode configuration uas muaj feem xyuam nrog kev tshuaj xyuas cov kev sib txuas ntawm LED, LED lub xeev nyob / tawm, thiab qhov chaw nres nkoj tso zis voltage. Kev txheeb xyuas qhov kev teeb tsa raug yog qhov tseem ceeb rau kev tswj kom zoo ntawm LEDs lossis lwm yam khoom siv.
Yog tias koj xav paub ntau ntxiv txog LED zaub,tiv tauj peb tam sim no. RTLEDyuav teb koj cov lus nug.
Post lub sij hawm: Aug-24-2024