Kev siv cov multimeters hauv kev kho cov khoom siv hauv tsev Yuav ua li cas tswj cov ntsuas ntsuas
Kev siv cov multimeter
①Digital multimeter: Ua ntej ntsuas, hloov mus rau qhov ntsuas. Nws yuav tsum tau muab sau tseg tias qhov ntau yam cim rau ntawm txoj hauj lwm yog tus nqi siab tshaj plaws.
②Mechanical multimeter: Cov txheej txheem ntsuas tam sim no thiab qhov hluav taws xob yog tib yam li cov qauv lej, tab sis thaum ntsuas cov cathode, kev nyeem ntawv yuav tsum tau muab faib los ntawm tus nqi ntawm lub iav kom tau txais tus nqi ntsuas. Piv txwv li: lub iav tam sim no yog "X100" thiab kev nyeem ntawv yog 200, Cov lus nug ntsuas yog 200X100=20000Ω=20K, qhov "Ω" nplai ntawm lub dial yog los ntawm sab laug mus rau sab xis, los ntawm loj mus rau me me, thaum lwm tus yog los ntawm sab laug mus rau sab xis, los ntawm me mus rau loj
Multimeter Ceev faj
① Kho qhov "zero point" (tsuas yog rau cov neeg kho tshuab saib xwb). Ua ntej siv lub moos, ua ntej xyuas tias tus pointer nyob ntawm "zero position" ntawm sab laug kawg. Kho cov ntsia hlau kom lub pointer taw tes rau xoom.
②Thaum siv multimeter, nws yuav tsum muab tso rau kab rov tav (tsuas yog rau cov tshuab)
③ Ua ntej qhov kev ntsuam xyuas, txiav txim siab cov ntsiab lus ntsuas, tig lub pob qhov hloov pauv mus rau qhov sib thooj rau qhov ntsuas ntsuas, kom tsis txhob hlawv lub taub hau ntsuas, yog tias koj tsis paub qhov luaj li cas ntawm qhov ntsuas lub cev, pib qhov ntsuas nrog ib loj ntau thawj.
④ Cov ntawv xeem yuav tsum raug muab tso rau hauv cov khoom sib xws.
⑤ Thaum lub sij hawm kuaj, tsis txhob tig lub iav hloov pob qhov rooj arbitrarily.
⑥ Tom qab siv, nco ntsoov kho qhov hloov pauv ntawm qhov ntsuas qhov tsis siv mus rau qhov siab tshaj plaws ntawm AC voltage.
⑦ Thaum ntsuas DC voltage thiab tam sim no, them sai sai rau qhov zoo thiab qhov tsis zoo ntawm qhov hluav taws xob, cov kev taw qhia ntws ntawm qhov tam sim no, thiab txuas (thaum) kom raug nrog kev sim ua.
Lub multimeter kuaj pom qhov qhib Circuit Court txhaum ntawm lub teeb pom kev zoo
Lub multimeter kuaj pom qhov qhib Circuit Court txhaum ntawm lub teeb pom kev zoo
Thaum lub teeb pom kev zoo qhib, yuav tsis muaj qhov hluav taws xob hauv Circuit Court, lub teeb pom kev zoo yuav tsis teeb, thiab cov khoom siv hluav taws xob yuav tsis ua haujlwm. Yog vim li cas yog: lub fuse yog cua tshuab, hlau tawg, hlau kawg yog xoob, hloov tau puas, thiab lwm yam.
Thaum lub multimeter pom qhov qhib-circuit txhaum ntawm lub teeb pom kev zoo, thaum lub hwj chim raug txiav tawm, lub multimeter tuaj yeem siv los ntsuas qhov txuas ntxiv ntawm Circuit Court; los yog thaum lub hwj chim qhib, lub multimeter tuaj yeem siv los ntsuas qhov voltage ntawm AC voltage Circuit Court los txiav txim qhov txhaum.
Qhib Circuit Court txhaum ntawm lub teeb pom kev zoo tuaj yeem muab faib ua peb qhov xwm txheej: tag nrho qhib Circuit Court, ib nrab qhib Circuit Court thiab ib tus neeg qhib Circuit Court.
(1) Txhua qhov qhib circuits
Hom kev ua txhaum no feem ntau tshwm sim ntawm cov kab tseem ceeb, hauv kev faib hluav taws xob thiab ntsuas cov khoom siv, thiab nyob rau hauv ntau yam khoom siv hauv tsev. Feem ntau, kev sib txuas ntawm txhua qhov sib koom ua ke ntawm cov lus hais saum toj no (nrog rau lub davhlau ya nyob twg) yuav tsum tau kuaj xyuas. Feem ntau, qhov tsis ua hauj lwm ntawm lub taub hau hlau kom tawg tawm ntawm kev sib txuas yog qhov feem ntau; thib ob, xyuas qhov qhib thiab kaw ntawm qhov sib txuas dynamic thiab zoo li qub ntawm txhua kab hloov.
(2) Ib nrab qhib Circuit Court
Hom kev txhaum no feem ntau tshwm sim nyob rau hauv thaj tsam ntawm ceg kab. Feem ntau, xyuas qhov kev sib txuas ntawm txhua lub taub hau hlau ua ntej, thiab tom qab ntawd kos lub shunt hloov. Yog hais tias tus ntoo khaub lig-section ntawm shunt hlau me me, nws yuav tsum tau txiav txim siab hais tias cov tub ntxhais hlau yuav tawg nyob rau hauv lub insulating txheej thiab ua rau lub zos qhib Circuit Court.
(3) Tus kheej qhib Circuit Court
Hom kev ua txhaum no feem ntau txwv rau lub thawv sib txuas, lub teeb lub teeb, lub teeb hloov, thiab cov xaim txuas ntawm lawv. Feem ntau, kev sib txuas ntawm txhua qhov sib txuas tuaj yeem raug kuaj xyuas nyias, thiab qhov kev sib cuag ntawm cov neeg sib txuas ntawm cov khoom siv xws li cov tuav lub teeb, lub teeb hloov thiab lub qhov (socket) (rau cov teeb fluorescent, qhov kev sib txuas ntawm txhua yam yuav tsum tau kuaj xyuas).
