Thaum nws los txog rau kev xaiv hom capacitor zoo rau kev siv hluav taws xob, cov kev xaiv feem ntau tuaj yeem ua rau kiv taub hau. Ib qho ntawm cov hom capacitors feem ntau siv hauv cov hluav taws xob yog electrolytic capacitor. Hauv pawg no, muaj ob hom subtypes tseem ceeb: aluminium electrolytic capacitors thiab polymer electrolytic capacitors. Kev nkag siab txog qhov sib txawv ntawm ob hom capacitors no yog qhov tseem ceeb rau kev xaiv lub capacitor kom raug rau ib daim ntawv thov tshwj xeeb.
Cov khoom siv hluav taws xob txhuasyog cov electrolytic capacitors uas ib txwm muaj thiab siv dav dua. Lawv paub txog lawv cov capacitance siab thiab muaj peev xwm tswj tau cov theem voltage siab. Cov capacitors no yog ua los ntawm kev siv daim ntawv impregnated nrog electrolyte ua dielectric thiab aluminium foil ua electrodes. Cov electrolyte feem ntau yog cov kua lossis gel substance, thiab nws yog kev sib cuam tshuam ntawm electrolyte thiab aluminium foil uas tso cai rau cov capacitors no khaws thiab tso tawm lub zog hluav taws xob.
Cov polymer electrolytic capacitors, ntawm qhov tod tes, yog cov tshiab dua, hom electrolytic capacitor siab dua. Hloov chaw siv cov kua lossis gel electrolyte, cov polymer capacitors siv cov khoom siv hluav taws xob khov kho ua cov electrolyte, ua rau muaj kev ruaj khov zoo dua thiab txo qis kev tiv thaiv sab hauv. Kev siv cov thev naus laus zis solid-state hauv cov polymer capacitors tuaj yeem ua rau muaj kev ntseeg siab dua, ntev lub neej kev pabcuam, thiab muab kev ua tau zoo dua hauv kev siv zaus siab thiab kub siab.
Ib qho ntawm qhov sib txawv tseem ceeb ntawmcov khoom siv hluav taws xob aluminium electrolytic capacitorsthiab cov polymer electrolytic capacitors yog lawv lub neej ua haujlwm. Cov txhuas electrolytic capacitors feem ntau muaj lub neej luv dua li cov polymer capacitors thiab muaj kev pheej hmoo ntau dua rau kev ua tsis tiav vim muaj ntau yam xws li kub siab, kev ntxhov siab voltage, thiab ripple current. Polymer capacitors, ntawm qhov tod tes, muaj lub neej ua haujlwm ntev dua thiab tau tsim los tiv taus cov xwm txheej ua haujlwm hnyav dua, ua rau lawv tsim nyog rau kev siv hauv cov ntawv thov uas xav tau ntau.
Lwm qhov sib txawv tseem ceeb yog ESR (kev tiv taus sib npaug) ntawm ob lub capacitors. Cov txhuas electrolytic capacitors muaj ESR siab dua piv rau cov polymer capacitors. Qhov no txhais tau tias cov polymer capacitors muaj kev tiv taus sab hauv qis dua, ua rau muaj kev ua tau zoo dua hauv kev tswj hwm tam sim no, kev tsim cua sov thiab kev faib hluav taws xob.
Hais txog qhov loj thiab qhov hnyav, cov polymer capacitors feem ntau me dua thiab sib dua li cov txhuas capacitors uas muaj peev xwm thiab qhov ntsuas voltage zoo sib xws. Qhov no ua rau lawv tsim nyog dua rau cov khoom siv hluav taws xob me me thiab sib dua, qhov twg qhov chaw thiab qhov hnyav yog qhov tseem ceeb uas yuav tsum xav txog.
Hauv kev xaus, thaum cov txhuas electrolytic capacitors tau yog qhov kev xaiv zoo tshaj plaws rau ntau xyoo vim lawv cov nqi capacitance siab thiab qhov ntsuas voltage, polymer electrolytic capacitors muaj ntau qhov zoo ntawm kev ua haujlwm ntev, kev ua tau zoo, thiab qhov loj me. Kev xaiv ntawm ob hom capacitors nyob ntawm qhov xav tau tshwj xeeb ntawm daim ntawv thov, xws li cov xwm txheej ua haujlwm, qhov chaw txwv, thiab kev ua tau zoo.
Tag nrho hauv txhua qhov, ob qho tib si aluminium electrolytic capacitors thiab polymer electrolytic capacitors muaj lawv tus kheej qhov zoo thiab qhov tsis zoo. Yuav kom xaiv tau hom capacitor tsim nyog tshaj plaws rau ib daim ntawv thov, nws yog ib qho tseem ceeb kom xav txog qhov yuav tsum tau ua thiab cov xwm txheej ua haujlwm ntawm lub voj voog hluav taws xob. Raws li thev naus laus zis txuas ntxiv mus, polymer electrolytic capacitors tau dhau los ua neeg nyiam vim lawv qhov kev ua tau zoo dua thiab kev ntseeg siab, ua rau lawv yog lwm txoj hauv kev zoo rau cov txhuas electrolytic capacitors ib txwm muaj hauv ntau daim ntawv thov hluav taws xob.
Lub sijhawm tshaj tawm: Lub Ib Hlis-02-2024