Yuav ua li cas ntsuam xyuas lub generic capacitor qhov zoo nrog ib tug digital multimeter
1. Kev txheeb xyuas cov capacitors me me hauv qab 10pF: Vim lub peev xwm me me ntawm cov khoom siv ruaj khov qis dua 10pF, ntsuas nrog lub tshuab hluav taws xob tsuas tuaj yeem kuaj xyuas seb puas muaj cov dej xau, sab hauv luv luv, lossis tawg.
Thaum ntsuas, multimeter R tuaj yeem siv × 10k iav, siv ob qhov kev sojntsuam los txuas ob tus pins ntawm lub capacitor, thiab tus nqi kuj yuav tsum yog qhov kawg. Yog tias qhov ntsuas qhov ntsuas tsis kam (pointer viav vias mus rau sab xis) yog xoom, nws qhia tau hais tias lub capacitor puas lawm vim los ntawm kev xau lossis kev puas tsuaj sab hauv.
2. Tshawb xyuas 10PF ~ 001 μ Taag capacitor F: Txiav txim seb puas muaj qhov tshwm sim them nqi thiab tom qab ntawd txiav txim siab nws qhov zoo. Multimeter xaiv R × 1k iav. Ob lub transistor Qhov tseem ceeb tshaj 100 thiab qhov nkag mus tam sim no yuav tsum me me. Cov raj sib xyaw tuaj yeem tsim los ntawm silicon triodes ntawm cov qauv xws li 3DG6.
Cov liab thiab dub sojntsuam ntawm lub multimeter txuas nrog lub emitter e thiab collector c ntawm cov raj sib txuas, feem. Vim lub amplification nyhuv ntawm composite transistor, lub them thiab tawm cov txheej txheem ntawm lub ntsuas capacitor yog amplified, uas ua rau kom lub viav vias ntawm lub multimeter pointer thiab pab kev soj ntsuam.
Nws yuav tsum tau muab sau tseg tias thaum lub sij hawm kev soj ntsuam kev ua hauj lwm, tshwj xeeb tshaj yog thaum ntsuas capacitors nrog me me capacities, nws yog ib qhov tsim nyog yuav tsum tau rov qab hloov lub capacitor pins kuaj mus rau cov ntsiab lus A thiab B thiaj li yuav pom tseeb oscillation ntawm lub multimeter pointer.
Rau 001 μ Taag capacitors saum F tuaj yeem ntsuas tau siv R tus nqi ntawm multimeter × Ncaj nraim sim lub capacitor rau kev them nqi thiab sab hauv luv luv Circuit Court lossis to ntawm 10k iav, thiab kwv yees lub peev xwm ntawm lub capacitor raws li qhov amplitude ntawm lub pointer viav vias mus rau sab xis.
Cov ntaub ntawv txuas ntxiv:
Kev tswj tsis raug:
1. Kev txheeb xyuas cov capacitors me me hauv qab 10pF: Vim lub peev xwm me me ntawm cov khoom siv ruaj khov qis dua 10pF, ntsuas nrog lub tshuab hluav taws xob tsuas tuaj yeem kuaj xyuas seb puas muaj cov dej xau, sab hauv luv luv, lossis tawg.
Thaum ntsuas, multimeter R tuaj yeem siv × 10k iav, siv ob qhov kev sojntsuam los txuas ob tus pins ntawm lub capacitor, thiab tus nqi kuj yuav tsum yog qhov kawg. Yog tias qhov ntsuas qhov ntsuas tsis kam (pointer viav vias mus rau sab xis) yog xoom, nws qhia tau hais tias lub capacitor puas lawm vim los ntawm kev xau lossis kev puas tsuaj sab hauv.
2. Tshawb xyuas 10PF ~ 001 μ Taag capacitor F: Txiav txim seb puas muaj qhov tshwm sim them nqi thiab tom qab ntawd txiav txim siab nws qhov zoo. Multimeter xaiv R × 1k iav. Ob lub transistor Qhov tseem ceeb tshaj 100 thiab qhov nkag mus tam sim no yuav tsum me me. Cov raj sib xyaw tuaj yeem tsim los ntawm silicon triodes ntawm cov qauv xws li 3DG6.
Cov liab thiab dub sojntsuam ntawm lub multimeter txuas nrog lub emitter e thiab collector c ntawm cov raj sib txuas, feem. Vim lub amplification nyhuv ntawm composite transistor, lub them thiab tawm cov txheej txheem ntawm lub ntsuas capacitor yog amplified, uas ua rau kom lub viav vias ntawm lub multimeter pointer thiab pab kev soj ntsuam.
Nws yuav tsum tau muab sau tseg tias thaum lub sij hawm kev soj ntsuam kev ua hauj lwm, tshwj xeeb tshaj yog thaum ntsuas capacitors nrog me me capacities, nws yog ib qhov tsim nyog yuav tsum tau rov qab hloov lub capacitor pins kuaj mus rau cov ntsiab lus A thiab B thiaj li yuav pom tseeb oscillation ntawm lub multimeter pointer.
Rau 001 μ Taag capacitors saum F tuaj yeem ntsuas tau siv R tus nqi ntawm multimeter × Ncaj nraim sim lub capacitor ntawm 10k iav rau cov txheej txheem them nqi thiab sab hauv luv luv lossis xau. 1. Feem ntau ua txhaum ntawm lub capacitor. Thaum pom ib qho xwm txheej hauv qab no hauv lub capacitor, lub zog hluav taws xob yuav tsum raug txiav tam sim ntawd.
