Kev Tiv Thaiv System rau Charger tiv thaiv Overvoltage
Nyob rau lub caij nyoog digital niaj hnub no, cov khoom siv hluav taws xob tau dhau los ua qhov tseem ceeb rau lub neej txhua hnub. Ntawm cov khoom siv no, cov chargers ua lub luag haujlwm tseem ceeb hauv kev tswj hwm kev txav mus los thiab kev ua haujlwm ntawm cov khoom siv xws li xov tooj ntawm tes, laptops, thiab ntsiav tshuaj. Txawm li cas los xij, cov chargers kuj tuaj yeem yog qhov tsis muaj zog yog tias lawv tsis muaj cov txheej txheem tiv thaiv txaus, tshwj xeeb tshaj yog tiv thaiv overvoltage. Overvoltage tuaj yeem ua rau cov khoom siv puas tsuaj thiab txawm tias muaj kev pheej hmoo kev nyab xeeb. Yog li ntawd, nws yog qhov tseem ceeb kom nkag siab thiab siv cov txheej txheem tiv thaiv overvoltage rau cov chargers.
Nkag Siab Txog Kev Siv Hluav Taws Xob Ntau Dhau
Qhov hluav taws xob ntau dhau yog ib qho mob uas lub zog hluav taws xob hauv lub voj voog tshaj qhov txwv kev nyab xeeb uas tau teem tseg. Qhov hluav taws xob ntau dhau tuaj yeem tshwm sim sai sai (surge) lossis ntev ntev (txuas ntxiv). Qee qhov ua rau muaj hluav taws xob ntau dhau suav nrog lub zog hluav taws xob ntau dhau los ntawm xob laim, kev cuam tshuam ntawm lub zog hluav taws xob, lossis cov khoom ua haujlwm tsis zoo. Thaum muaj hluav taws xob ntau dhau, cov khoom siv hluav taws xob muaj kev pheej hmoo ntawm kev puas tsuaj loj xws li hluav taws, yaj, lossis txawm tias tawg.
Cov Cheebtsam Tseem Ceeb ntawm Kev Tiv Thaiv Overvoltage
Lub kaw lus tiv thaiv overvoltage hauv lub charger feem ntau muaj ntau yam khoom tseem ceeb uas ua haujlwm sib koom ua ke. Cov hauv qab no yog cov khoom tseem ceeb hauv lub kaw lus no:
1. Varistor (Hlau Oxide Varistor - MOV):
Cov varistors ua haujlwm ua kev tiv thaiv tseem ceeb tiv thaiv kev nce siab ntawm lub zog hluav taws xob. MOVs ua haujlwm los ntawm kev txo qis kev tiv thaiv thaum muaj kev hloov pauv hluav taws xob ntau dhau, yog li xa cov hluav taws xob ntau dhau mus rau hauv av lossis lwm txoj hauv kev nyab xeeb.
2. Zener Diode:
Cov Zener diodes siv rau hauv cov circuits kom tswj tau qhov voltage ntawm ib qib tshwj xeeb. Thaum qhov voltage tshaj qhov breakdown voltage, Zener diode pib ua tam sim no, yog li tiv thaiv cov circuit tom ntej los ntawm overvoltage.
3. Polyswitch (Polymeric Positive Temperature Coefficient - PPTC):
Ib lub polyswitch yog ib hom resistor uas hloov nws tus nqi tsis kam raws li qhov kub thiab txias. Thaum muaj hluav taws xob ntau dhau lossis overvoltage, lub polyswitch kub thiab ua rau nws qhov tsis kam nce ntxiv, yog li ntawd cuam tshuam qhov ntws tam sim no.
4. Lub Raj Tso Pa (GDT):
Cov GDTs siv cov roj uas ncig hauv ib lub raj kom coj hluav taws xob ntawm qhov hluav taws xob siab. Thaum muaj hluav taws xob ntau dhau, cov roj hauv lub raj yuav ua hluav taws xob thiab xa cov hluav taws xob mus rau hauv av, tiv thaiv lub voj voog kom tsis txhob puas tsuaj.
5. Lub tshuab hluav taws xob tawg:
Lub tshuab hluav taws xob txiav hluav taws xob thaum muaj hluav taws xob ntau dhau lossis muaj hluav taws xob ntau dhau. Qhov no yog kauj ruam kawg hauv kev tiv thaiv lub cuab yeej ntawm hluav taws xob ntau dhau.
Txoj Cai Ua Haujlwm ntawm Kev Tiv Thaiv Overvoltage
Lub tshuab tiv thaiv hluav taws xob ntawm lub charger ua haujlwm los ntawm kev txheeb xyuas qhov hluav taws xob nce siab thiab xa lossis cuam tshuam cov hluav taws xob kom tiv thaiv kev puas tsuaj rau lub cuab yeej. Nov yog cov kauj ruam dav dav hauv kev ua haujlwm ntawm lub tshuab tiv thaiv no:
1. Kev Tshawb Pom Hluav Taws Xob Ntau Dhau:
Lub kaw lus tiv thaiv yuav tsum ntes tau qhov overvoltage hauv lub sijhawm luv luv. Cov khoom xws li varistors thiab Zener diodes teb tam sim ntawd rau qhov kev hloov pauv voltage.
2. Kev Faib Tawm Tam Sim No Ntau Dhau:
Thaum kuaj pom, cov hluav taws xob ntau dhau yuav raug xa mus rau txoj kev nyab xeeb. MOVs thiab GDTs feem ntau xa cov hluav taws xob mus rau hauv av kom ntseeg tau tias qhov hluav taws xob tsis nce mus txog lub charger lub voj voog tseem ceeb.
3. Lub sijhawm so tam sim no:
Yog tias qhov hluav taws xob nce siab tsis tuaj yeem tswj tau, lub tshuab hluav taws xob lossis polyswitch ua haujlwm los cuam tshuam lub voj voog tag nrho. Qhov no ua kom muaj kev nyab xeeb ntawm lub cuab yeej thiab tus neeg siv.
4. Kev Rov Qab Zoo Li Qub:
Thaum qhov overvoltage daws tau thiab qhov voltage rov qab mus rau qib ib txwm, qee yam khoom xws li lub circuit breaker tuaj yeem rov pib dua lossis polyswitch tuaj yeem rov qab mus rau qhov tsis kam qis, cia lub charger ua haujlwm zoo li ua ntej.
Kev Siv Hauv Kev Tsim Charger
Yuav kom siv tau lub tshuab tiv thaiv overvoltage hauv lub charger tsim, ntau kauj ruam yuav tsum tau ua los ntawm tus kws kho hluav taws xob:
1. Kev Xaiv Cheebtsam:
Xaiv cov khoom tsim nyog raws li cov lus qhia thiab cov kev xav tau. Piv txwv li, txiav txim siab qhov ntsuas MOV kom raug raws li lub zog ua haujlwm thiab tam sim no ntawm lub charger.
2. Tsim Kev Siv Circuit Zoo:
Lub voj voog tiv thaiv overvoltage yuav tsum tau tsim kom ua haujlwm tau zoo thiab tsis cuam tshuam rau kev ua haujlwm ntawm lub charger. Qhov no suav nrog kev txiav txim siab txoj kev overcurrent thiab lub circuit breaker.
3. Kev Ntsuas thiab Kev Pom Zoo:
Tom qab tsim qauv, nws yog ib qho tsim nyog los ua qhov kev sim nruj ntawm lub charger kom ntseeg tau tias lub kaw lus tiv thaiv ua tiav hauv ntau yam xwm txheej, ob qho tib si luv luv thiab ntev voltage surges.
4. Daim Ntawv Pov Thawj thiab Cov Qauv Kev Nyab Xeeb:
Xyuas kom tseeb tias lub charger thiab nws txoj kev tiv thaiv ua raws li cov qauv kev nyab xeeb, xws li UL, CE, lossis IEC. Cov qauv no tswj hwm cov teeb meem kev nyab xeeb ntawm cov khoom siv hluav taws xob, suav nrog kev tiv thaiv overvoltage.
Xaus
Qhov hluav taws xob ntau dhau yog ib qho kev hem thawj loj rau cov khoom siv hluav taws xob, tshwj xeeb tshaj yog cov chargers, uas yog cov khoom tseem ceeb ntawm ntau lub cuab yeej digital. Los ntawm kev siv lub kaw lus tiv thaiv hluav taws xob ntau dhau, qhov kev pheej hmoo ntawm kev puas tsuaj ntawm cov khoom siv thiab cov kev phom sij yuav raug txo kom tsawg. Cov khoom xws li varistors, Zener diodes, polyswitches, cov raj xa roj, thiab cov circuit breakers ua lub luag haujlwm tseem ceeb hauv kev ntes, channeling, thiab cuam tshuam cov hluav taws xob ntau dhau.
Kev tsim qauv zoo, kev xaiv cov khoom, thiab kev sim yog qhov tseem ceeb rau kev ua haujlwm zoo tshaj plaws ntawm lub kaw lus tiv thaiv. Ntxiv mus, kev ua raws li cov qauv kev nyab xeeb uas siv tau ua kom ntseeg tau tias cov khoom siv tsis yog tsuas yog muaj kev nyab xeeb xwb tab sis kuj txhim khu kev qha hauv kev ua lag luam. Yog li ntawd, kev siv lub kaw lus tiv thaiv overvoltage tsis yog tsuas yog kev xaiv txuj ci xwb tab sis kuj yog lub luag haujlwm rau kev nyab xeeb thiab kev ruaj khov ntawm cov khoom siv hluav taws xob thiab lawv cov neeg siv.
