Yuav ua li cas diodes pab tiv thaiv kev tshaj tam sim no nyob hauv LCD cov lus qhia?

1, Cov yam ntxwv yooj yim thiab hom kev lom zem
Diode yog lub tshuab hluav taws xob nrog cov hluav taws xob sib xyaw nrog cov kev coj tsis zoo, tsim ntawm P -} hom semiconductors. Thaum cov voltage rau pem hauv ntej yog thov rau Diode, tam sim no tuaj yeem hla dhau; Thaum rov qab voltage yog thov, tam sim no yog thaiv. Raws li lawv cov laj thawj sib txawv thiab cov yam ntxwv, diodage regulator diodes, thiab hloov dodes kev tswj hwm, thiab hloov diodes desies yog siv ntau.
2, Cov phom sij ntawm cov thoob plaws hauv LCD cov lus qhia
LCD cov lus qhia xav tau cov khoom siv hluav taws xob ruaj khov thaum lub sijhawm ua haujlwm. Txawm li cas los xij, vim tias tsis ruaj khov grid voltage, tsim tsis xws hauv lub zog circuits, lossis sab nraud kev cuam tshuam, tam sim no tshaj plaws yuav tshwm sim. Tam sim no muaj ntau dua tsis tsuas yog ua rau muaj kev puas tsuaj rau cov khoom siv hluav taws xob sab hauv cov ua kua crystal molecules, yog li cuam tshuam rau cov zaub cuam tshuam. Thaum muaj mob hnyav, nws kuj yuav tshwm sim hauv txhua daim saib xyuas tau raug pob. Yog li, tiv thaiv kev tshaj tam sim no yog ib qho tseem ceeb ntawm cov haujlwm tseem ceeb ntawm lub zog tswj hwm kev tswj hwm rau LCD cov lus qhia.
3, Daim ntawv thov ntawm dodes nyob rau hauv kev tiv thaiv tam sim no overload
Rectifier Diode
Rectifiers yog ib feem tseem ceeb ntawm lub zog tswj kev tswj hwm rau LCD cov lus qhia. Nws converts ac lub hwj chim rau DC lub zog, muab lub zog dC ruaj khov rau LCD cov lus qhia. Thaum lub sij hawm kho cov txheej txheem, cov diode tsuas yog tso cai rau tam sim no kom ntws hauv ib qho kev taw qhia, yog li zam kev cuam tshuam ntawm kev cuam tshuam ntxiv ntawm tam sim no. Cov unidirectional no tus yam ntxwv zoo heev tiv thaiv qhov tshwm sim ntawm kev tshaj tawm tam sim no.
Zener diode
Zener Deiodes ua lub luag haujlwm tseem ceeb hauv lub zog tswj kev tswj hwm ntawm LCD cov lus qhia. Nws siv txoj ntsiab cai uas cov voltage ntawm ob qho kawg ntawm daim diode tas li thaum rov qab ua kom tiav txoj haujlwm ntawm kev ntsuas hluav taws xob ruaj khov thiab amplitude txwv. Thaum lub zog hluav taws xob voltage nce, tus voltage regulator diode yuav nqus qhov ntau tshaj plaws voltage los tswj qhov ruaj khov ntawm cov zis hluav taws xob. Qhov kev ntsuas hluav taws xob ruaj khov no tsis tsuas yog tiv thaiv cov hluav taws xob sib xyaw sab hauv lub LCD cov kev puas tsuaj, tab sis kuj tseem tiv thaiv qhov tshwm sim ntawm kev tshaj tawm tam sim no.
Hloov Diode
Hloov Donises siv nyob rau hauv lub zog tswj hwm kev tswj hwm ntawm LCD cov lus qhia los tswj hwm ntawm / tawm ntawm cov khoom siv fais fab. Thaum cov zaub LCD yuav tsum tau muab tua lossis sau Diode yuav txiav tawm lub zog hluav taws xob tiv thaiv qhov tam sim no los ntawm kev ntws mus. Cov tes hloov pauv tsis tsuas yog txuag hluav taws xob, tab sis kuj tseem tiv thaiv qhov tshwm sim ntawm kev tshaj tawm tam sim no. Nyob rau tib lub sijhawm, cov yam ntxwv ceev ceev ntawm kev hloov diodes pab kom tiav lub zog hloov hauv lub sijhawm luv, txhim kho cov lus teb ceev thiab ruaj khov ntawm lub cuab yeej.
4, siv thiab ua kom zoo ntawm Diode Proturation muaj nuj nqi
Txhawm rau kom ua tiav txoj kev tiv thaiv kev ua haujlwm ntawm diodes hauv kev tsim kho lub zog, nws yog qhov tsim nyog xaiv ntawm diode, thiab nruj me ntsis tswj nws cov haujlwm tsis ua haujlwm. Piv txwv li, thaum xaiv cov chaw ntsuas hluav taws xob ntawm, cov tsis muaj zog xws li nws ruaj khov voltage, ntau ruaj khov tam sim no, thiab lub zog dissipated xav tau. Cov kev xaiv ntawm cov kev xaiv no yuav tsum tau txiav txim siab raws li cov kev ua haujlwm tiag tiag thiab tam sim no ntawm LCD zaub kom ntseeg tau tias cov DIODE tuaj yeem tswj tau ruaj khov thaum lub sijhawm ua haujlwm.
Ib qho ntxiv, kev saib xyuas yuav tsum tau them rau cov cua sov dissipation ntawm dodes. Vim yog cov cua sov tsim los ntawm kev ua haujlwm, cov cua sov tsis zoo tuaj yeem ua rau muaj kev kub ntxhov thiab cuam tshuam rau lawv cov kev ua tau zoo thiab kev ua tau zoo thiab ua tau muaj sia thiab kav lub neej. Yog li ntawd, thaum tsim kev voj voog tsim hluav taws xob, nws yog ib qho tsim nyog los npaj txoj haujlwm ntawm dodes tsim nyog, nce cov cua sov dissipation cheeb tsam, thiab txhim kho lub tshav kub dissipation efficiency.
5, Cov ntaub ntawv thov siv ntawm Diode Proturation muaj nuj nqi
Noj qee hom ntawm LCD TV ua piv txwv, nws lub hwj chim tswj kev siv ntau yam DIODE ua kom tau kev tiv thaiv tam sim no. Ntawm lawv, Rectifier audes hloov ac lub zog rau hauv DC lub zog, muab lub zog kom ruaj khov rau lub TV; Cov ntsuas hluav taws xob cov zauv uas muaj kev ruaj ntseg ntawm cov zis hluav taws xob thiab tiv thaiv cov hluav taws xob siab los ntawm cov hluav taws xob hluav taws xob sab hauv ntawm TV; Hloov pauv Diode tswj lub on / tawm ntawm lub zog muab, ua tiav cov standby thiab tawm haujlwm ntawm lub TV. Qhov ua haujlwm sib koom tes ntawm cov teeb meem no ua haujlwm tau ua haujlwm ruaj khov ntawm LCD TV, zam dhau qhov tshwm sim ntawm kev tshaj tawm tam sim no.
https://www.trrsemicon.com/diode/smdi622} awndeDitching163} QuickLiode {