Yuav Ua Li Cas Pom Cov Teeb Meem Siv Multimeter
Yuav ua li cas siv ib kab multimeter
Nyob rau hauv cov xwm txheej nyob, siv AC voltage lossis DC voltage raws li qhov xwm txheej! Siv cov iav tiv thaiv txhawm rau txheeb xyuas txoj hauv kev thiab luv luv uas tsis muaj cov ntsiab lus!
Lub multimeter muaj beep nres, uas txhais tau hais tias siv ob lub probes los ntsuas tib lub xov hlau. Yog tias muaj qhov luv luv, yuav tsis muaj lus teb. Yog hais tias muaj ib lub voj voog, yuav muaj lub suab beep. Qee lub sij hawm, thaum lub cuab yeej nws tus kheej yog av tsis zoo thiab lub plhaub nyob, qhov kev sojntsuam liab ntawm multimeter tuaj yeem muab tso rau ntawm daim ntawv dub ntawm lub plhaub kom ncaj qha rau hauv av. Lub zog ntawm lub plhaub xau tam sim no tuaj yeem ntsuas tau los ntawm kev txuas nws mus rau hauv Circuit Court nyob rau hauv series rau tag nrho cov hauj lwm.
Txhawm rau kuaj xyuas qhov hluav taws xob hauv hluav taws xob, lub megohmmeter (megger) yuav tsum tau siv, vim tias qhov hluav taws xob ntawm lub tshuab hluav taws xob qis dua (9V) thiab qhov hluav taws xob ntawm megohmmeter siab dua (500V). Vim tias qhov hluav taws xob ua haujlwm ntawm lub voj voog yog 220V, nws yog ib qho nyuaj rau kev kuaj xyuas cov kab hluav taws xob uas tsis muaj qhov to. Txhawm rau siv lub ntsuas hluav taws xob los kuaj xyuas cov hluav taws xob hauv hluav taws xob, koj yuav tsum xub txiav tawm lub hwj chim, tawm hauv Circuit Court, thiab ntsuas nws nrog qib tsis kam ntawm 2M. Cov zaub ib txwm yog 1 (infinite).
Kev ntsuas seb lub Circuit Court puas nyob rau hauv ib qho kev sib txuas hauv lub xeev tuaj yeem ntsuas tau los ntawm kev siv lub multimeter's ohm range. Thaum ntsuas, nws yog ib qho tsim nyog los xaiv ib thaj tsam uas lub ntsuas ntsuas ntsuas ze rau 0 ohms ntawm deflection. Yog tias lub voj voog nyob hauv ib lub voj voog, ib qho kawg (A kawg) ntawm lub voj voog yuav tsum txuas mus rau ib qho multimeter (liab lead) ntawm 100 ohms, thiab cov hlau lead dub yuav tsum txuas mus rau lwm qhov kawg (B kawg) ntawm Circuit Court rau ntsuas. Yog tias qhov ntsuas ntsuas yog xoom, nws qhia tau hais tias lub voj voog txuas nrog, tseem hu ua txoj kev. Tsuas yog ib txoj hauv kev tuaj yeem ntws los ntawm Circuit Court; Yog hais tias lub multimeter ohmmeter pointer ntawm A txog B kawg ntawm Circuit Court tsis nyob ze rau xoom ohms, lub Circuit Court twb nyob rau hauv ib tug qhib Circuit Court, thiab disconnection yog hu ua qhib Circuit Court los yog qhib Circuit Court.
Yuav Ua Li Cas Siv Multimeter kom pom cov teeb meem
Ib qho multimeter feem ntau tsuas yog siv ob theem los xyuas qhov tsis raug ntawm hluav taws xob, ib qho yog qib voltage (xws li AC thiab DC voltage theem) thiab lwm qhov yog ohms.
Yog tias lub cuab yeej tsis ua haujlwm lawm, thawj qhov koj xav txog yog seb lub cuab yeej hluav taws xob zoo li qub, koj yuav tsum siv qhov ntsuas hluav taws xob ntau ntawm lub tshuab hluav taws xob (xaiv AC voltage ntau lossis DC voltage ntau, nyob ntawm seb koj lub cuab yeej yog AC lossis DC) los ntsuas. Yog hais tias lub Circuit Court tswj los yog theem nrab Circuit Court yog disconnected, txawm yog hais tias koj paub txog cov schematic daim duab, koj yuav tsum tau siv ib tug voltage range los ntsuas seb qhov voltage ntawm ib tug tej qhov chaw yog li qub. Yog tias nws tau txiav txim siab tias qhov hluav taws xob ntawm qhov chaw ntawd yuav tsum tsis yog tam sim no tab sis tam sim no, thiab nws yuav tsum tam sim no tab sis tsis tam sim no, nws qhia tau tias muaj kev cuam tshuam lossis kev sib cuag tsis zoo ntawm qhov chaw ntawd. Txhawm rau txiav txim siab zoo dua yog tias muaj teeb meem ntawm lub sijhawm no, koj kuj yuav tsum tau txiav lub hwj chim ntawm lub cuab yeej. Qhov ntau ohm ntawm multimeter txiav txim siab seb cov hlau puas tau raug txiav tawm ntawm qhov no, txhawm rau daws teeb meem. Hais lus ntxhib, nws tsuas yog nyob ntawm koj qhov kev paub txog cov khoom siv thiab kev ua haujlwm ntawm kev ua haujlwm
