Kev soj ntsuam faulty capacitor feem ntau yog ua nrog multimeter
Pointer multimeter txhawm rau txheeb xyuas qhov tsis ua haujlwm capacitor
1, Tsis-polarized capacitor txhaum kev kuaj:
Tshawb nrhiav thawj tus pointer multimeter rau txhua yam zeroing. Tom qab ntawd xaiv cov multimeter Rx10k ohm cov ntaub ntawv, lub rooj ntawm cov cwj mem liab thiab dub tau raug hu mus rau kev sim capacitance ntawm ob tus pins, soj ntsuam cov multimeter qhia txog kev hloov pauv ntawm tus nqi kuj.
Yog tias tus cwj mem txuas nrog lub sijhawm, tus taw tes rau lub viav vias me me thiab rov qab mus rau qhov kawg; Hloov tus cwj mem los ntsuas qhov ntsuas, tus cwj mem txuas nrog lub sijhawm, tus pointer tseem mus rau txoj cai me me viav vias rov qab mus rau infinity, ces qhov no capacitor yog qhov qub.
Yog hais tias lub multimeter txuas nrog lub sijhawm, tus pointer swings mus rau sab xis nyob ze 0, ces lub capacitor loj heev los yog tau tawg.
Yog hais tias lub multimeter qhib tam sim ntawd, tus pointer tsis tuaj yeem rov qab mus rau qhov kawg tom qab viav vias mus rau sab xis, qhia tias lub capacitor to.
Yog hais tias lub multimeter qhib tam sim ntawd, tus pointer tsis txav, qhia tias lub capacitor qhib.
2, electrolytic capacitor txhaum kev kuaj:
Electrolytic capacitor yog capacitors nrog polarity. Ua ntej kev sim, siv lub hau ntswj lossis ib lo lus kom tso tawm cov nqi seem ntawm lub capacitor. Tom qab ntawd siv tus cwj mem dub ntawm multimeter txuas nrog rau sab zoo ntawm lub capacitor, tus cwj mem liab txuas nrog rau sab tsis zoo, thiab saib lub viav vias ntawm lub ntsuas ntsuas.
Nyob rau hauv lub instant cia li tig rau, lub multimeter yuav tsum deflected mus rau sab xis ntawm ib tug ntau dua lub kaum sab xis, thiab ces rov qab mus rau sab laug. Txog thaum nws rov qab los rau qhov chaw nres tsheb, qhov ntsuas qhov ntsuas ntawm lub sijhawm no yog lub peev xwm ntawm qhov zoo rwb thaiv tsev tsis kam. Qhov kev tiv thaiv ntsuas tom qab hloov cov ' meter ' cwj mem yog qhov rov qab rwb thaiv tsev tsis kam ntawm lub capacitor.
Yog hais tias tus pointer ntawm lub rooj tsis txav, nws txhais tau hais tias lub peev xwm ntawm lub capacitor no ploj mus los yog nyob rau hauv disconnection.
Yog hais tias lub rooj ntsuas capacitance ntawm qhov zoo thiab tsis zoo rwb thaiv tsev kuj yog me me los yog 0, ces lub capacitor to los yog nyob rau hauv luv luv Circuit Court.
Digital multimeter los kuaj xyuas qhov tsis ua haujlwm
Cov multimeter digital yuav muab tso rau hauv cov ntaub ntawv capacitance, raws li qhov loj ntawm lub hwj chim xaiv cov iav tsim nyog. Tom qab lub capacitor yuav tsum tau kuaj yog tag nrho tawm, ob lub pins ntawm lub capacitor yog ncaj qha mus rau hauv lub qhov rau kev ntsuas; los yog ob lub cwj mem ncaj qha nyob rau hauv kev sib cuag nrog lub capacitor pins rau kev ntsuas, thiab lub peev xwm ntawm lub capacitor los ntsuas yuav ncaj qha tso tawm rau ntawm lub multimeter nyob rau lub sijhawm no.
Kev ntsuas ntawm electrolytic capacitors nrog lub digital multimeter, lub capacitor yuav tsum ntsuas tom qab tso tawm tag nrho, lub rooj yuav tsum yog tus cwj mem liab hu rau capacitance ntawm qhov zoo davhlau ya nyob twg, tus cwj mem dub txuas nrog lub davhlau ya nyob twg tsis zoo ntawm lub capacitor, lub sijhawm no ntsuas lub peev xwm ntawm qhov zoo rwb thaiv tsev tsis kam, thiab vice versa, ntsuas tsis kam yog qhov tsis zoo rwb thaiv tsev tsis kam.
Kev hloov pauv Capacitor:
1, lub peev xwm hloov capacitor thiab lub peev xwm ntawm lub peev xwm tseem ceeb yog qhov qub.
2, high voltage capacitance tuaj yeem hloov qhov qis voltage capacitance, tab sis tsis tshua muaj voltage capacitance tsis tuaj yeem hloov lub siab voltage capacitance.
3, me me-tswj capacitors tuaj yeem hloov pauv nrog cov peev txheej loj; loj-capacity capacitor tuaj yeem hloov pauv hauv cov khoom siv me me.
4, electrolytic capacitors tuaj yeem hloov nrog cov tsis muaj polarized capacitors.
5, rau siab zaus oscillation capacitors thiab fais fab mov lim capacitors, tsis tuaj yeem hloov los ntawm cov capacitors zoo tib yam.
