1. Electrolytic capacitor
Electrolytic capacitors yog cov capacitors tsim los ntawm oxidation txheej ntawm cov electrode los ntawm kev ua ntawm cov electrolyte ua ib txheej insulating, uas feem ntau muaj peev xwm loj. Cov electrolyte yog cov kua, jelly-zoo li cov khoom uas nplua nuj nyob rau hauv ions, thiab feem ntau electrolytic capacitors yog polar, uas yog, thaum ua hauj lwm, qhov voltage ntawm qhov zoo electrode ntawm lub capacitor yuav tsum tau ib txwm siab tshaj qhov tsis zoo voltage.
Lub peev xwm siab ntawm electrolytic capacitors kuj tau txi rau ntau lwm yam ntxwv, xws li muaj cov xau loj tam sim no, qhov sib npaug loj sib npaug ntawm cov inductance thiab tsis kam, kev ua siab ntev loj, thiab lub neej luv luv.
Ntxiv nrog rau cov polar electrolytic capacitor, kuj tseem muaj cov tsis-polar electrolytic capacitor. Hauv daim duab hauv qab no, muaj ob hom 1000uF, 16V electrolytic capacitors. Ntawm lawv, qhov loj dua yog tsis-polar, thiab me me yog polar.
(Non-polar thiab polar electrolytic capacitors)
Sab hauv ntawm electrolytic capacitor tej zaum yuav yog cov kua electrolyte los yog cov khoom polymer, thiab cov khoom siv electrode feem ntau yog Aluminium (Aluminium) lossis tantalum (Tandalum). Cov nram qab no yog ib qho polar txhuas electrolytic capacitor nyob rau hauv cov qauv, ntawm ob txheej ntawm electrodes muaj ib txheej ntawm fiber ntau daim ntawv soaked nyob rau hauv electrolyte, ntxiv rau ib txheej ntawm insulating daim ntawv hloov mus rau hauv lub tog raj kheej, kaw nyob rau hauv lub txhuas plhaub.
(Internal qauv ntawm electrolytic capacitor)
Dissecting electrolytic capacitor, nws cov qauv yooj yim tuaj yeem pom meej. Txhawm rau tiv thaiv cov evaporation thiab to ntawm electrolyte, lub capacitor tus pin yog tsau nrog sealing roj hmab.
Tau kawg, daim duab kuj qhia tau hais tias qhov sib txawv ntawm cov ntim sab hauv ntawm cov polar thiab non-polar electrolytic capacitors. Nyob rau tib lub peev xwm thiab qib voltage, qhov tsis yog-polar electrolytic capacitor yog kwv yees li ob zaug loj dua li tus polar.
(Internal qauv ntawm non-polar thiab polar electrolytic capacitors)
Qhov sib txawv no feem ntau yog los ntawm qhov sib txawv loj hauv cheeb tsam ntawm cov electrodes hauv ob lub capacitor. Cov tsis-polar capacitor electrode yog nyob rau sab laug thiab lub polar electrode nyob rau sab xis. Ntxiv rau qhov sib txawv ntawm cheeb tsam, lub thickness ntawm ob lub electrodes kuj txawv, thiab lub thickness ntawm lub polar capacitor electrode yog thinner.
(Electrolytic capacitor txhuas ntawv ntawm qhov dav sib txawv)
2. Capacitor tawg
Thaum qhov hluav taws xob siv los ntawm lub capacitor tshaj nws qhov hluav taws xob tiv thaiv, los yog thaum lub polarity ntawm qhov hluav taws xob ntawm lub polar electrolytic capacitor yog thim rov qab, lub capacitor to tam sim no yuav nce siab, ua rau muaj kev nce hauv cov cua sov ntawm lub capacitor, thiab cov electrolyte. yuav tsim cov roj ntau ntau.
Txhawm rau tiv thaiv kev tawg ntawm lub capacitor, muaj peb grooves nias rau sab saum toj ntawm lub capacitor vaj tse, kom lub sab saum toj ntawm lub capacitor yog ib qho yooj yim tawg nyob rau hauv lub siab siab thiab tso lub siab sab hauv.
(Blasting tank nyob rau sab saum toj ntawm electrolytic capacitor)
Txawm li cas los xij, qee qhov capacitors hauv cov txheej txheem tsim khoom, qhov zawj sab saum toj nias tsis tsim nyog, lub siab sab hauv lub capacitor yuav ua rau cov roj hmab sealing hauv qab ntawm lub capacitor yog ejected, lub sij hawm no lub siab nyob rau hauv lub capacitor yog dheev tso tawm, yuav tsim. kev tawg.
1, tsis-polar electrolytic capacitor tawg
Daim duab hauv qab no qhia tau hais tias tsis yog-polar electrolytic capacitor ntawm tes, nrog lub peev xwm ntawm 1000uF thiab qhov hluav taws xob ntawm 16V. Tom qab siv qhov hluav taws xob ntau tshaj 18V, qhov xau tam sim no nce siab, thiab qhov kub thiab siab hauv lub capacitor nce. Thaum kawg, cov roj hmab foob nyob rau hauv qab ntawm lub capacitor tawg, thiab cov electrodes sab hauv yog smashed xoob xws li paj kws.
(tsis yog-polar electrolytic capacitor overvoltage blasting)
Los ntawm khi ib lub thermocouple rau lub capacitor, nws muaj peev xwm ntsuas cov txheej txheem uas qhov kub ntawm lub capacitor hloov raws li qhov kev thov voltage nce. Cov duab hauv qab no qhia tau hais tias tsis yog-polar capacitor nyob rau hauv tus txheej txheem ntawm voltage nce, thaum lub sij hawm thov voltage ntau tshaj tus nqi hluav taws xob, qhov kub thiab txias nyob rau hauv cov txheej txheem txuas ntxiv mus.
(Kev sib raug zoo ntawm voltage thiab kub)
Daim duab hauv qab no qhia txog qhov kev hloov pauv ntawm qhov tam sim no ntws los ntawm lub capacitor thaum tib txoj kev. Nws tuaj yeem pom tau tias qhov nce hauv tam sim no yog qhov laj thawj tseem ceeb rau qhov nce hauv qhov kub thiab txias. Nyob rau hauv cov txheej txheem no, qhov voltage yog linearly nce, thiab raws li tam sim no nce sharply, lub hwj chim mov pab pawg neeg ua rau lub voltage poob. Thaum kawg, thaum tam sim no tshaj 6A, lub capacitor tawg nrog lub suab nrov.
(Kev sib raug zoo ntawm voltage thiab tam sim no)
Vim lub ntim loj ntawm cov tsis-polar electrolytic capacitor thiab tus nqi ntawm electrolyte, lub siab generated tom qab lub overflow yog loj, ua rau lub siab nyem tank nyob rau sab saum toj ntawm lub plhaub tsis tawg, thiab sealing roj hmab nyob rau hauv qab. ntawm lub capacitor yog tshuab qhib.
2, polar electrolytic capacitor tawg
Rau polar electrolytic capacitor, ib qho hluav taws xob yog siv. Thaum qhov hluav taws xob tshaj qhov hluav taws xob tiv thaiv ntawm lub capacitor, cov xau tam sim no tseem yuav nce siab, ua rau lub capacitor overheat thiab tawg.
Daim duab hauv qab no qhia txog qhov txwv tsis pub electrolytic capacitor, uas muaj peev xwm ntawm 1000uF thiab qhov hluav taws xob ntawm 16V. Tom qab overvoltage, cov txheej txheem sab hauv siab raug tso tawm los ntawm lub siab nyem lub tank sab saum toj, yog li cov txheej txheem tawg ntawm capacitor raug zam.
Cov duab hauv qab no qhia tau hais tias qhov ntsuas kub ntawm lub capacitor hloov pauv li cas nrog qhov nce ntawm qhov siv hluav taws xob. Raws li qhov hluav taws xob maj mam nce mus txog qhov kev tiv thaiv hluav taws xob ntawm lub capacitor, qhov seem tam sim no ntawm lub capacitor nce, thiab qhov kub thiab txias tseem nce ntxiv.
(Kev sib raug zoo ntawm voltage thiab kub)
Cov duab hauv qab no yog qhov kev hloov pauv ntawm cov xau tam sim no ntawm lub capacitor, lub nominal 16V electrolytic capacitor, nyob rau hauv cov txheej txheem xeem, thaum lub voltage ntau tshaj 15V, lub to ntawm lub capacitor pib nce sharply.
(Kev sib raug zoo ntawm voltage thiab tam sim no)
Los ntawm kev sim cov txheej txheem ntawm thawj ob lub tshuab hluav taws xob electrolytic, nws kuj tuaj yeem pom tias qhov hluav taws xob txwv ntawm 1000uF zoo tib yam electrolytic capacitor. Txhawm rau kom tsis txhob muaj qhov hluav taws xob tawg ntawm lub capacitor, thaum siv lub tshuab hluav taws xob electrolytic, nws yog qhov yuav tsum tau tawm ntawm cov npoo txaus raws li qhov tseeb voltage hloov pauv.
3,electrolytic capacitors nyob rau hauv series
Thaum tsim nyog, ntau dua capacitance thiab ntau dua capacitance withstand voltage tuaj yeem tau los ntawm kev sib txuas thiab sib txuas, raws li.
(electrolytic capacitor paj kws tom qab overpressure tawg)
Hauv qee qhov kev siv, qhov hluav taws xob siv rau lub capacitor yog AC voltage, xws li coupling capacitors ntawm cov neeg hais lus, alternating tam sim no them nyiaj them, lub cev muaj zog theem-hloov capacitors, thiab lwm yam, yuav tsum tau siv cov tsis-polar electrolytic capacitors.
Nyob rau hauv cov neeg siv phau ntawv muab los ntawm ib co capacitor manufacturers, nws kuj tau muab hais tias siv cov tsoos polar capacitors los ntawm rov qab-rau-rov qab series, uas yog, ob capacitors nyob rau hauv series ua ke, tab sis lub polarity yog opposite kom tau txais cov nyhuv ntawm non- polar capacitor.
(electrolytic capacitance tom qab overvoltage tawg)
Cov nram qab no yog kev sib piv ntawm cov polar capacitor nyob rau hauv daim ntawv thov rau pem hauv ntej voltage, rov qab voltage, ob electrolytic capacitors rov qab-rau-rov qab series rau hauv peb kis ntawm tsis-polar capacitance, leakage tam sim no hloov nrog qhov nce ntawm cov ntaub ntawv voltage.
1. Forward voltage thiab to tam sim no
Tam sim no ntws los ntawm lub capacitor yog ntsuas los ntawm kev sib txuas ntawm cov resistor hauv series. Nyob rau hauv qhov voltage kam rau ua ntau yam ntawm lub electrolytic capacitor (1000uF, 16V), cov ntaub ntawv voltage yog maj mam nce los ntawm 0V los ntsuas cov kev sib raug zoo ntawm cov coj to tam sim no thiab voltage.
(zoo series capacitance)
Cov duab hauv qab no qhia txog kev sib raug zoo ntawm cov xau tam sim no thiab qhov hluav taws xob ntawm lub polar aluminium electrolytic capacitor, uas yog kev sib raug zoo nrog cov xau tam sim no hauv qab 0.5mA.
(Qhov kev sib raug zoo ntawm qhov hluav taws xob thiab tam sim no tom qab lub tom ntej series)
2, rov qab voltage thiab to tam sim no
Siv tib yam tam sim no los ntsuas qhov kev sib raug zoo ntawm cov kev taw qhia voltage thiab cov electrolytic capacitor to tam sim no, nws tuaj yeem pom los ntawm daim duab hauv qab no tias thaum cov ntaub ntawv rov qab siv dua 4V, cov xau tam sim no pib nce sai. Los ntawm txoj kab nqes ntawm qhov nkhaus hauv qab no, qhov rov qab electrolytic capacitance yog sib npaug rau qhov tsis kam ntawm 1 ohms.
(Rov qab voltage Kev sib raug zoo ntawm voltage thiab tam sim no)
3. Rov qab-rau-rov qab series capacitors
Ob qhov zoo tib yam electrolytic capacitors (1000uF, 16V) yog txuas rov qab-rau-rov qab nyob rau hauv series los ua ib tug non-polar sib npaug electrolytic capacitor, thiab ces qhov kev sib raug zoo nkhaus ntawm lawv voltage thiab to tam sim no yog ntsuas.
(zoo thiab tsis zoo polarity series capacitance)
Cov duab hauv qab no qhia txog kev sib raug zoo ntawm lub capacitor voltage thiab cov xau tam sim no, thiab koj tuaj yeem pom tias cov xau tam sim no nce tom qab siv hluav taws xob ntau dua 4V, thiab qhov tam sim no amplitude tsawg dua 1.5mA.
Thiab qhov kev ntsuas no yog qhov xav tsis thoob me ntsis, vim tias koj pom tias cov xau tam sim no ntawm ob lub rov qab-rau-rov qab series capacitors yog qhov tseeb ntau dua li qhov xau tam sim no ntawm ib lub capacitor thaum qhov hluav taws xob tau thov rau pem hauv ntej.
(Kev sib raug zoo ntawm voltage thiab tam sim no tom qab zoo thiab tsis zoo series)
Txawm li cas los xij, vim lub sijhawm yog vim li cas, tsis muaj kev sim rov qab rau qhov tshwm sim no. Tej zaum ib qho ntawm cov capacitors siv yog lub capacitor ntawm qhov ntsuas hluav taws xob rov qab tam sim no, thiab muaj kev puas tsuaj sab hauv, yog li qhov ntsuas qhov ntsuas saum toj no tau tsim.
Post lub sij hawm: Lub Xya hli ntuj-25-2023
