Yuav ua li cas txheeb xyuas diodes thiab LEDs?

1, Cov yam ntxwv zoo
diode
Lub diode feem ntau yog ib lub khob me me los yog pob yas uas muaj ob lub electrodes hauv - anode (zoo electrode) thiab cathode (tsis zoo electrode). Cov tsos ntawm diodes yuav txawv nyob ntawm seb hom ntim. Piv txwv li, cov iav encapsulated diodes muaj cylindrical lossis elliptical zoo li nrog ib tus pin ntawm txhua qhov kawg; Yas encapsulated diodes feem ntau pom muaj nyob rau hauv kev sib xyaw ua ke thiab cov khoom siv hluav taws xob me me, nrog rau qhov zoo nkauj dua thiab feem ntau yog ob tus pins sib luag.
LED
Cov tsos ntawm LED zoo ib yam li cov diode, tab sis kuj muaj qee qhov sib txawv tseem ceeb. Ua ntej, LEDs feem ntau muaj pob tshab yas lossis iav casing, uas tso cai rau lub teeb tawm ntawm sab hauv. Qhov thib ob, cov xim ntawm LED casing feem ntau sib haum rau cov xim ntawm lub teeb nws tawm. Piv txwv li, lub casing ntawm LED liab feem ntau yog liab, thaum lub casing ntawm ib tug ntsuab LED yog ntsuab. Tsis tas li ntawd, tus pin kev teeb tsa ntawm LED kuj txawv ntawm qhov diode. Feem ntau, tus pin ntev ntawm LED yog tus ncej zoo (anode), thiab tus pin luv yog tus ncej tsis zoo (cathode).
2, Kev kos duab
diode
Txoj kev cim rau diodes sib txawv nyob ntawm qhov chaw tsim khoom thiab ntim hom. Ntawm qee lub iav encapsulated diodes, koj tuaj yeem pom lub nplhaib xim me me los yog teev kom paub cov anode (zoo electrode). Qee zaum, cov pins ntawm diode kuj tau cim nrog cov xim sib txawv lossis ntev kom paub qhov txawv ntawm qhov zoo thiab qhov tsis zoo. Tsis tas li ntawd, qee cov tuam txhab lag luam kuj luam tus qauv lossis cov chaw tsim khoom logo ntawm lub casing ntawm lub diode rau cov neeg siv kev txheeb xyuas.
LED
Txoj kev cim ntawm LED yog qhov yooj yim thiab meej. Feem ntau, tus pin ntev ntawm LED yog qhov zoo electrode (anode), thiab tus pin luv yog qhov tsis zoo electrode (cathode). Tsis tas li ntawd, LED casing feem ntau yog cim nrog ib tug xub los yog ib qho me me los qhia qhov kev taw qhia ntawm tus ncej zoo. Qee zaum, cov pins ntawm LED kuj tau cim nrog cov xim sib txawv, xws li liab rau qhov zoo thiab dub rau qhov tsis zoo.
3, Cov yam ntxwv hluav taws xob
diode
Lub luag haujlwm tseem ceeb ntawm diodes yog rectification thiab nrhiav kom tau. Thaum pem hauv ntej biased, lub diode tso cai rau tam sim no hla; Thaum rov qab biased, lub diode yog yuav luag tsis-conductive. Cov yam ntxwv no ua rau diodes dav siv nyob rau hauv rectification circuits, voltage regulation circuits, thiab signal detection circuits. Tsis tas li ntawd, diodes kuj muaj qee yam khoom siv hluav taws xob, xws li kev tawg hluav taws xob, rov qab tam sim no, thiab kev poob qis rau pem hauv ntej.
LED
LED yog ib hom tshwj xeeb ntawm diode uas tuaj yeem hloov hluav taws xob hluav taws xob mus rau lub teeb lub zog. Thaum lub LED yog rau pem hauv ntej biased, tam sim no dhau los ntawm PN kev sib tshuam ntawm LED, zoo siab electron hloov thiab tso lub teeb lub zog. Lub luminous efficiency ntawm LED nyob ntawm nws cov khoom thiab cov qauv, thiab cov LEDs sib txawv tuaj yeem tawm lub teeb ntawm cov xim sib txawv. Tsis tas li ntawd, LED kuj muaj qhov zoo ntawm kev siv hluav taws xob tsawg, lub neej ntev, thiab kev tswj tau yooj yim, uas ua rau nws siv dav hauv thaj chaw xws li teeb pom kev zoo, zaub, thiab cov teeb liab qhia.
4, Qhov sib txawv ntawm kev siv tswv yim
Daim ntawv thov ua haujlwm
Diodes feem ntau yog siv nyob rau hauv circuits xws li rectification, nrhiav kom tau, voltage stabilization, thiab teeb liab amplification. Piv txwv li, nyob rau hauv rectifier circuits, diodes tuaj yeem hloov pauv tam sim no mus rau qhov tam sim no ncaj qha; Nyob rau hauv lub voltage regulator Circuit Court, diodes tuaj yeem stabilize cov zis voltage; Nyob rau hauv cov teeb liab amplification circuits, diodes tuaj yeem ua kom cov teeb liab tsis muaj zog.
LEDs feem ntau yog siv nyob rau hauv cov teb xws li teeb pom kev zoo, tso saib, thiab teeb liab qhia. Piv txwv li, nyob rau hauv LED teeb pom kev zoo fixtures, LEDs tuaj yeem emit lub teeb ci ntsa iab rau qhov chaw; Hauv kev tshuaj ntsuam, LEDs tuaj yeem tsim pixels los tso saib cov duab thiab cov ntawv; Nyob rau hauv cov teeb liab qhia circuits, LEDs tuaj yeem tso lub teeb ntawm cov xim sib txawv los qhia txog lub xeev lossis cov ntaub ntawv sib txawv.
Ua haujlwm voltage thiab tam sim no
Qhov ua hauj lwm voltage thiab tam sim no ntawm diodes feem ntau yog tsawg, xws li los ntawm ob peb volts mus rau kaum tawm volts, thiab tam sim no kuj nyob rau hauv lub milliampere ntau yam. Qhov no yog vim hais tias diodes tsuas tso cai rau ib tug tsawg tus nqi ntawm tam sim no los ntawm lub sij hawm rau pem hauv ntej bias los tiv thaiv overheating los yog puas.
Kev ua haujlwm voltage thiab tam sim no ntawm LEDs kuj qis dua, tab sis piv rau diodes, LEDs xav tau ntau dua voltage thiab tam sim no kom tawm lub teeb. Cov LED sib txawv muaj qhov sib txawv ntawm kev khiav hauj lwm voltage thiab tam sim no, nyob ntawm lawv cov khoom thiab cov qauv. Hauv kev siv tswv yim, nws yog ib qho tsim nyog los xaiv qhov tsim nyog voltage thiab tam sim no tsav lub LED raws li nws cov specifications.
kub yam ntxwv
Ob lub diodes thiab LEDs muaj qee qhov kub thiab txias. Nyob rau hauv qhov kub thiab txias ib puag ncig, qhov rov qab tam sim no ntawm diodes yuav nce thiab lub zog rau pem hauv ntej yuav txo; Lub luminous efficiency ntawm LED yuav txo qis, thiab xim kuj yuav hloov. Yog li ntawd, thaum tsim thiab siv cov khoom no, nws yog ib qho tsim nyog yuav tau xav txog qhov cuam tshuam ntawm qhov kub thiab txias ntawm lawv cov kev ua tau zoo thiab siv cov kev ntsuas coj los txo qhov kub los yog txhim kho cov cua sov ntawm cov khoom.
https://www.trrsemicon.com/diode/switching-diodes-bas21a-cs.html