Dab tsi yog vim li cas vim li cas lub multimeter tsis teb rau qhov kev ntsuas capacitance
Yog tias nws yog digital multimeter ntsuas capacitance, tsis muaj lus teb. Ua ntej ntawm tag nrho cov, xyuas kom meej seb lub iav txoj hauj lwm thiab lub jack yog lawm, thiab thib ob, lub multimeter tsis tawg. Cov kev ua yuam kev qis qis feem ntau tsis tsim nyog. Yog hais tias lub multimeter yog qhov qub thiab lub iav yog qhov tseeb, nws feem ntau yog tias lub capacitor tawg. Thaum sab hauv ntawm lub capacitor raug puas los ntawm kev qhib Circuit Court (tshuab), lub multimeter yuav tso saib xoom.
Lwm qhov ua tau yog tias thaum siv multimeter los ntsuas lub peev xwm, cov hluav taws xob hauv lub capacitor yuav tsum raug tso tawm ua ntej, txwv tsis pub cov khoom sab hauv ntawm multimeter yuav puas. Rau lub peev xwm me me, tsuas yog luv luv ob tus pins ntawm lub capacitor ncaj qha. Rau cov muaj peev xwm loj lossis cov kab hluav taws xob tawm, nws tsis tuaj yeem raug luv luv, txwv tsis pub cov cua sov loj uas tsim los ntawm luv luv Circuit Court yuav ua rau lub capacitor bulge los yog tawg. Txoj kev raug yog txuas lub resistor lossis cov khoom siv hluav taws xob rau ob qho kawg ntawm lub capacitor, thiab cia cov resistor lossis cov khoom siv hluav taws xob siv lub zog.
(Thaum xaiv cov khoom siv hluav taws xob, nws yuav tsum tau ua kom ntseeg tau tias qhov ntsuas hluav taws xob ntawm cov khoom siv hluav taws xob yog siab dua qhov hluav taws xob capacitor.)
pointer multimeter
1. Yog tias koj siv lub pointer multimeter, nws yuav yog qhov kev xaiv ntawm cov iav capacitance loj heev. Cov ntaub ntawv capacitance thiab cov ntaub ntawv tiv thaiv ntawm pointer multimeter yog kev sib xyaw ua ke, qhov loj dua cov ntaub ntawv tiv thaiv, qhov me me ntawm cov ntaub ntawv capacitance yog.
2. Lwm qhov xwm txheej yog tias lub capacitor puas lawm. Thaum lub capacitor qhib circuited (tsis txuas), tus pointer ntawm multimeter yuav tsis muaj lus teb. Thaum lub capacitor luv luv (luv-circuited), tus pointer ntawm lub multimeter yuav nres ntawm xoom nplai ntawm qhov tsis kam.
Nyob rau hauv ib txwm muaj xwm txheej, siv tus pointer multimeter los ntsuas qhov capacitance. Tus pointer yuav xub deflect mus rau sab xis sai sai, ces rov qab mus maj mam, thiab thaum kawg nres ntawm ib qho chaw. Qhov loj dua lub peev xwm ntawm lub capacitor, qhov loj dua lub kaum sab xis ntawm txoj cai deflection ntawm tus pointer; qhov zoo dua qhov zoo ntawm lub capacitor, qhov ze dua qhov kawg nres txoj hauj lwm ntawm tus pointer yog infinity.
3. Lwm qhov yog tias lub capacitor tsis tso tawm. Siv lub pointer multimeter los ntsuas qhov capacitance. Tom qab txhua qhov kev ntsuas, koj yuav tsum rov ntsuas thiab rov tso tawm (luv luv luv). Ib txhia phooj ywg hais tias kuv tsis tso hluav taws xob thawj zaug? Vim hais tias txhua lub sij hawm lub capacitance yog ntsuas nrog cov ntaub ntawv capacitance (tiag tiag cov ntaub ntawv kuj), lub roj teeb nyob rau hauv lub multimeter yuav tsub lub capacitor. Yog li txhua zaus koj yuav tsum rov ntsuas dua tom qab ntsuas, koj yuav tsum luv-circuit lub capacitor.
