Txhua xyoo ntau dua thiab ntau zaus hauv kev lag luam hauv tebchaws koj tuaj yeem nrhiav cov capacitors tsis yog Lavxias nkaus xwb, tab sis kuj yog cov tuaj txawv teb chaws. Thiab ntau qhov teeb meem tseem ceeb hauv kev txiav txim siab cov cim sib xws. Yuav ua li cas paub nws? Tseeb tiag, yog tias muaj qhov yuam kev, lub cuab yeej yuav tsis ua haujlwm.
Pib nrog, peb nco ntsoov tias lub cim ntawm cov capacitors tau ua tiav hauv qhov kev txiav txim no:
- Nominal capacitance, qhov twg lub npe coded suav nrog cov lej (feem ntau peb lossis plaub) thiab cov ntawv siv tau, qhov twg tsab ntawv qhia txog tus lej lej, nrog rau kev xaiv (uF, nF, pF).
- Tso cai sib txawv los ntawm lub peev xwm nominal (siv thiab tsis tshua xav txog, nyob ntawm tus yam ntxwv thiab lub hom phiaj ntawm lub cuab yeej).
- Tso cai ntsuas hluav taws xob (lwm yam nws tseem hu ua kev ua haujlwm hluav taws xob tso cai) - yog qhov tseem ceeb, tshwj xeeb tshaj yog thaum siv hauv high-voltage circuits).
kos npe ntawm ceramic capacitors los ntawm nominal capacitance
Ceramic lossis taag capacitor yog cov nyiam tshaj plaws. Feem ntau qhov kev xaiv muaj peev xwm tuaj yeem pom ntawm rooj plaub yam tsis muaj tus lej tshwj xeeb.
1. Capacitor labeling nrog peb tus lej, qhov twg thawj ob qhia cov mantissa thiab qhov kawg yog lub hwj chim tus nqi hauv paus 10 kom tau txais tus nqi hauv picofarads, i.e. qhia tus naj npawb ntawm zeros rau lub capacitance ntawm lub capacitor hauv pikafararads. Piv txwv li: 472 txhais tau tias 4700 pF (tsis yog 472 pF).
2. Capacitor labeling nrog plaub tus lej - lub kaw lus zoo ib yam li yav dhau los, tsuas yog nyob rau hauv rooj plaub no thawj peb tus lej qhia mantissa, thiab qhov kawg yog tus nqi hluav taws xob hauv paus 10 kom tau txais qhov ntsuas hauv picofarads. Piv txwv li: 2344=234102 pF=23400 pF=23.4 nF
3. Sib xyaw cov cim lossis cim nrog cov lej thiab cov ntawv. Nyob rau hauv cov ntaub ntawv no, tsab ntawv qhia lub npe (μF, nF, pF), raws li zoo raws li lub decimal point, thiab cov zauv qhia tus nqi ntawm lub capacitance siv. Piv txwv li: 28p=28 pF, 3n3=3.3 nF. Muaj cov xwm txheej thaum tus lej lej suav nrog tsab ntawv R.
Kev kos npe raws li kev tso cai ua haujlwm qhov ntsuas hluav taws xob feem ntau siv thaum sib sau ua-nws-koj tus kheej hluav taws xob. Ntawd yog, kev kho cov teeb hluav taws xob fluorescent yuav tsis ua yam tsis muaj kev xaiv ntawm qhov tsim nyog qhov hluav taws xob ntawm cov capacitors ua tsis tiav. Hauv qhov no, qhov ntsuas no yuav raug qhia tom qab qhov sib txawv thiab lub peev xwm ntsuas.
Cov no yog qhov tseem ceeb tsis siv thaumcapacitors raug cim. Koj yuav tsum paub lawv thaum xaiv cov cuab yeej tsim nyog. Lub cim ntawm cov capacitors txawv teb chaws muaj nws tus kheej qhov sib txawv, tab sis zoo ib yam li peb tau piav qhia hauv kab lus no.
Tus capacitor txoj cai yuav pab koj tsim koj tus kheej cov cuab yeej, nrog rau pab kho cov khoom uas twb muaj lawm. Qhov tseem ceeb uas yuav tsum nco ntsoov yog tias tsuas yog cov tuam txhab lag luam uas tau ua pov thawj lawv tus nqi hauv kev lag luam hluav taws xob engineering tuaj yeem muaj cov khoom lag luam zoo. Thiab rau cov khoom ntawm hom no, qhov zoo tshaj plaws yog tag nrho. Tseeb tiag, vim muaj kev ua haujlwm tsis zoo ntawm lub capacitor, ib qho khoom kim heev ntawm cov khoom siv lossis cov khoom siv yuav tawg. Koj qhov kev nyab xeeb kuj tseem nyob ntawm lawv.
