Kev sib raug zoo ntawm cov kev tiv thaiv sab hauv ntawm multimeter tam sim no thiab hluav taws xob fais fab
1, Kev sib raug zoo ntawm kev tiv thaiv sab hauv ntawm multimeter tam sim no thiab hluav taws xob fais fab
Qhov zoo tshaj plaws, qhov kev tiv thaiv sab hauv ntawm multimeter qhov tam sim no yuav tsum sib npaug rau xoom. Vim tias muaj kev tiv thaiv sab hauv, yuav muaj qhov cuam tshuam tsis zoo thaum siv multimeter los ntsuas tam sim no, ua rau kev ntsuas yuam kev.
Qhov me me ntawm qhov kev tiv thaiv sab hauv ntawm qhov tam sim no, qhov qis hluav taws xob siv los ntawm multimeter thaum ntsuas tam sim no.
1) Thaum qhov ntau yam tam sim no zoo ib yam, qhov me me ntawm qhov tsis kam ntawm multimeter, qhov qis dua qhov ntsuas qhov ntsuas hluav taws xob poob qis, thiab qhov me dua qhov yuam kev hauv kev ntsuas tam sim no. Rau tib lub multimeter, tag nrho qhov ntsuas hluav taws xob poob qhov tseem ceeb rau txhua qhov tam sim no tuaj yeem sib txawv.
2) Rau tib lub multimeter, qhov loj dua qhov tam sim no, qhov me dua qhov kev tiv thaiv sab hauv, thiab qhov me me ntawm qhov ntsuas qhov yuam kev.
Yog li ntawd, txhawm rau txo qhov yuam kev hauv kev ntsuas tam sim no, qee zaum nws yog qhov zoo dua los xaiv qhov ntau dua tam sim no. Tau kawg, qhov ntau yuav tsum tsis txhob siab dhau kom tsis txhob muaj qhov nce ntxiv hauv kev nyeem ntawv yuam kev thaum ntsuas cov dej me me.
3) Thaum qhov kev tiv thaiv sab hauv ntawm qhov tam sim no yog kwv yees li 1 feem pua ntawm tag nrho cov kev tiv thaiv ntawm Circuit Court raug kuaj, nws tsis tas yuav xav txog qhov cuam tshuam ntawm qhov ntsuas hluav taws xob ntau ntawm qhov ntsuas.
2, Dab tsi yog qhov kev tiv thaiv sab hauv ntawm qhov tam sim no ntawm multimeter?
Nyob rau hauv cov nqe lus ntawm microampere ntau yam, yuav tsum muaj lub siab rhiab heev lub taub hau, thiab lub hauv paus kuj ntawm lub 'meter' yog siab heev, xws li los ntawm ob peb ohms mus rau kaum ntawm ohms, los yog txawm pua pua ntawm ohms.
Lub sab hauv kuj nyob rau hauv milliampere ntau yam tsawg dua, nyob rau hauv ob peb kaum ntawm ohms. Nyob rau hauv lub ampere ntau yam, lub internal kuj yog heev tsawg, feem ntau txuas nyob rau hauv parallel los ntawm luv luv-circuit diverters, thiab lub internal kuj nyob rau hauv 1 ohm.
Muaj qhov sib txawv tseem ceeb hauv kev tiv thaiv sab hauv ntawm cov iav sib txawv.
Kev sib txuas ntawm cov resistors hauv microampere meter tuaj yeem nthuav dav ntau yam, qhia tau hais tias rau tib lub taub hau 'meter', qhov loj dua qhov txuas ntxiv, qhov me dua qhov sib npaug sab hauv nws muaj.
Qhov kev tiv thaiv shunt tuaj yeem suav tau raws li qhov tsis txaus ntseeg tam sim no ntawm lub taub hau meter thiab qhov xav tau tam sim no. Tus nqi tiv thaiv tom qab kev sib txuas ntawm qhov sib txuas ntawm shunt resistor thiab lub hauv paus tsis kam ntawm lub taub hau meter yog cov lus teb koj xav tau. R tag nrho=(R tau qhab nia XR lub rooj) ÷ (R tau qhab nia ntxiv R lub rooj)
Qhov kwv yees tus nqi kuj tseem tuaj yeem tau los ntawm kev ntsuas ncaj qha nrog lub ntsuas ntsuas qib siab.
