Koj tuaj yeem siv ntau qhov ntau los ntsuas cov rwb thaiv tsev rwb thaiv tsev tsis kam ntawm xaim lossis cov khoom siv hluav taws xob.
Lub npe-hu ua xaim xau tiag tiag qhia tau tias cov khoom rwb thaiv tsev tsis kam ua rau ntau yam uas yog vim li cas los xij, ua rau muaj hlau me me ntawm cov xaim hluav taws xob thiab hauv av. Txog qee kis uas cov rwb thaiv tsev tsis kam lees tus nqi yog xoom, nws tsis yog tsuas yog qhov xau, tab sis theej lub luv luv circuit Court.
Ntawm no, Kuv yuav nrov cov tswv yim ntawm rwb thaiv tsev tsis kam; Qhov thiaj li hu ua rwb thaiv tsev yog hais txog kev siv cov tshuaj uas tsis yog kab mob uas lawv tus kheej lossis them cov cev uas muaj ntau txoj kev sib txawv ntawm ib leeg. Txoj haujlwm rwb thaiv tsev; Ua kom muaj kev nyab xeeb ntawm cov khoom siv hluav taws xob thiab cov kab hluav taws xob tiv thaiv hluav taws xob kom tiv thaiv qhov tshwm sim ntawm hluav taws xob kev sib tsoo.
Lub ntsiab lus ntawm rwb thaiv tsev tsis kam yog:; Lub txiaj ntsig tsis kam ntawm lub insidation txheej ntawm cov khoom siv hluav taws xob hauv qab DC voltage. Tsis muaj qee qhov "insulating" tshuaj nyob hauv lub ntiaj teb. Yog tias qhov ncaj qha rau cov hluav taws xob tshiab tau thov rau ob qho kev xaus ntawm cov tshuaj insulating, yuav muaj ib txwm hla dhau ntawm lub nruab nrab, tsuas yog tus voltage yog siab lossis qis. Defishectric tam sim no yog muab faib ntxiv mus rau hauv toast tam sim no (to tam sim no, polarization capacitance tam sim no).
Tsuas yog muab tso, cov av xau av tam sim no ntawm cov xov hlau cuam tshuam nrog cov khoom siv xws li noo noo thiab cov laus ntawm cov ntaub ntawv rwb thaiv tsev. Qhov ntau ntawm xau dej tam sim no yog cuam tshuam nrog kev siv voltage, thiab ntau dua qhov hluav taws xob, qhov ntau dua cov xau dej tam sim no. Lawv volt amples tsis yog linearly cuam tshuam.
Ob chav muaj multimeters thiab cov pointer multimeters feem ntau siv cov ntsuas ntsuas ntsuas cov cuab yeej siv hluav taws xob. Nruj me ntsis kev hais lus, muaj kev sib deev tsis tuaj yeem ntsuas qhov tsis muaj nqi ntawm cov xov hlau. Qhov tseeb, siv ntau txoj kev txiav txim siab tsuas yog txiav txim siab seb cov cuab yeej siv hluav taws xob cov hluav taws xob lossis lub cev muaj zog siv thiab seb puas muaj dej xau. Nyob rau lub sijhawm no, pullidimeter yog sib npaug rau tus cwj mem.
Yuav tsum tau siv rau ntsuas seb puas muaj xaim hluav taws xob lossis khoom siv. Muaj ntau cov neeg siv moegmeters feem ntau, suav nrog 25 0 v, 500v, thiab 1000V. Tsuav yog lub Moegen ntawm kev nrawm ntawm 120 kev hloov kho ib feeb thiab nws rwb thaiv tsev tsis muaj ntau dua li 0.5m ω, nws yog qhov tsim nyog tau thiab tuaj yeem siv nrog kev ntseeg siab.
Tsis txhob xav tias lub multimeter yog omnipotent. Ib qho khoom siv sib xyaw ua ke tau muab tso 1.5v thiab 9V roj teeb sab hauv. Nws yog tsis yooj yim sua kom ntsuas lub rwb thaiv tsev tsis kam ntawm ib-theem 220V lossis peb-theem 380v AC fais fab kab lossis cov khoom siv hluav taws xob.
Thaum cov mob tsis tso cai, siv ntau sib xyaw nrog lub zog tiv taus ntawm cov xov hlau lossis cov khoom siv hluav taws xob, tab sis hom no tsis pom zoo rau kev siv. Kev ntsuas qhov chaw ntawm Circuit Court lossis ntsuas qhov av tiv thaiv nrog cov kev sib txuam yog tseem muaj kev txiav txim siab ua ntej. Qhov ntsuas ntsuas tiag tiag ntawm kev tiv thaiv kev tiv thaiv yuav tsum tau ua siv ib sab caj npab lossis ib sab caj npab.
