Kev Ntsuas Kev Ntsuas Tam sim no nrog Multimeter
Thaum ntsuas tam sim no nrog ib lub multimeter, nws txuas nrog hauv series nrog lub voj voog raug kuaj. Qhov me me ntawm qhov tsis kam ntawm lub ammeter, qhov cuam tshuam tsawg dua nws muaj nyob rau hauv Circuit Court, thiab qhov me me qhov ntsuas qhov yuam kev. Hauv qhov xwm txheej zoo tshaj plaws, qhov kev tiv thaiv sab hauv ntawm lub ammeter yuav tsum sib npaug rau xoom, tab sis qhov tseeb nws yog tsis yooj yim sua vim hais tias lub movable coil ntawm ib tug multimeter muaj tooj liab hlau hlawv ntawv, yog li nws yeej ib txwm muaj ib tug tej yam kuj nyob rau hauv lub 'meter' taub hau, hu ua tam sim no thaiv sab hauv kuj. Vim lub 'meter' lub taub hau nyob rau hauv tsis kam, tag nrho cov kev ua hauj lwm zoo ntawm lub ntsuas Circuit Court yuav nce thaum ntsuas qhov tam sim no ntawm lub multimeter tam sim no thaiv, uas hloov lub qub ua hauj lwm lub xeev ntawm lub ntsuas Circuit Court thiab generates kev ntsuas yuam kev. Txhawm rau txo qhov kev ntsuas qhov yuam kev, nws yuav tsum tau ua kom lub zog sab hauv ntawm qhov thaiv tam sim no nws tus kheej kom tsawg li sai tau. Qhov me dua qhov kev tiv thaiv sab hauv ntawm qhov tam sim no, qhov ze ntawm qhov ntsuas qhov ntsuas yog rau tus nqi tiag tiag. Kev soj ntsuam yuam kev thaum ntsuas tam sim no tau qhia hauv daim duab hauv qab no:
Kev Ntsuas Kev Ntsuas Tam Sim No nrog Multimeter
a, Tested Circuit Court; b, Txuas hom tam sim no ntawm multimeter
Lub voj voog nyob rau hauv kev sim ua ntej qhov thaiv tam sim no txuas nrog yog qhia hauv daim duab a. Yog hais tias lub internal kuj ntawm lub hwj chim mov voltage yog ignored, lub tam sim no yog:
Nyob rau hauv cov mis, Rfz sawv cev rau lub load Circuit Court.
Lub voj voog nyob rau hauv kev sim qhia hauv daim duab b txuas nrog DC tam sim no hom, thiab lub voj voog tam sim no yog:
Muab piv rau qhov sib npaug 1 thiab 2, nws tuaj yeem pom tau tias tam sim no tom qab txuas rau hom tam sim no tsis sib npaug rau tam sim no ua ntej txuas rau hom tam sim no, thiab qhov txheeb ze yuam kev yog:
Nws tuaj yeem pom tias qhov loj ntawm Rc nyob rau hauv qhov tam sim no cuam tshuam ncaj qha rau kev ntsuas qhov yuam kev, thiab qhov loj ntawm qhov kev tiv thaiv sab hauv hauv qhov tam sim no kuj cuam tshuam rau lub zog poob PI ntawm qhov tam sim no:
Pom tseeb, thaum tam sim no kuv nyob tas li, qhov loj Rc, qhov loj dua qhov poob PI ntawm qhov tam sim no. Los ntawm cov ntsiab lus saum toj no, nws tuaj yeem xaus tias:
1. Thaum tag nrho cov kev tsis ncaj ncees tam sim no zoo ib yam nyob rau hauv hom tam sim no, qhov me me nyob rau hauv qhov kev tiv thaiv ntawm multimeter's tam sim no hom, qhov tsawg dua qhov kev tsis ncaj ncees voltage poob, thiab qhov me me ntsuas qhov yuam kev ntawm qhov tam sim no.
2. Rau tib lub multimeter, qhov loj dua qhov tam sim no, qhov me dua nws cov kev tiv thaiv sab hauv thiab ntsuas qhov yuam kev.
3. Thaum tag nrho cov kev tiv thaiv ntawm qhov kev ntsuam xyuas Circuit Court yog ntau dua qhov kev tiv thaiv sab hauv ntawm qhov tam sim no ntawm multimeter, qhov kev tiv thaiv sab hauv ntawm qhov tam sim no ntawm multimeter tuaj yeem tsis quav ntsej.
Nyob rau hauv cov ntsiab lus, thaum ntsuas tam sim no nrog ib tug multimeter, txij li thaum lub multimeter yog txuas nrog nyob rau hauv series nrog Circuit Court raug kuaj, qhov me me lub internal kuj thaum xaiv hom tam sim no, qhov tseeb qhov ntsuas qhov tshwm sim.
