Hauv kev ua haujlwm hluav taws xob niaj hnub, multimeter yog siv hauv kev kho hluav taws xob thiab yog ib qho khoom siv ntsuas tsis tau. Ntau tus novice electricians yuav hlawv tawm lub multimeter yuam kev nyob rau hauv tus txheej txheem ntawm kev siv lub multimeter. Cia peb muaj kev sib pauv yooj yim thiab kawm txog qhov tseem ceeb uas yuav tsum tau them sai sai rau thaum siv multimeter.
1. Kev xaiv ntawm qhov ntsuas qhov ntsuas tsis raug, uas yog, thaum qhov tam sim no lossis qhov hluav taws xob ntawm lub voj voog nyob rau hauv kev sim tsis paub, nws yog ib qho tsim nyog yuav tsum pib nrog ntau qhov ntau thiab tom qab ntawd maj mam txo qhov ntau.
2. Kev xaiv tsis raug ntawm qhov hluav taws xob thiab lub zog tam sim no, siv lub zog hluav taws xob ntawm lub tshuab hluav taws xob los ntsuas qhov ntsuas tam sim no, lossis siv lub iav tam sim no los ntsuas qhov hluav taws xob, thiab lwm yam yuav hlawv lub multimeter, nrog rau DC voltage iav ntawm lub multimeter, AC voltage iav, AC tam sim no iav thiab DC tam sim no iav yuav tsum tau paub meej meej ua ntej ntsuas thaum siv, thiab cov iav yuav tsum pom kom meej.
3. Thaum ntsuas qhov voltage thiab tam sim no, qhov ntau yam tsis tuaj yeem hloov pauv thaum ntsuas. Piv txwv li, yog tias koj ntsuas qhov hluav taws xob thiab pom tias qhov kev xaiv ntau dhau lawm, koj tsis tuaj yeem hloov pauv ncaj qha thaum ntsuas. Thiab qhov tseem ceeb tshaj plaws.
4. Txoj hauj lwm ntawm cov hlau lead jacks liab thiab dub yuav tsum tsis txhob muab tso rau hauv qhov tsis ncaj ncees lawm. Qee cov multimeters muaj ntau lub jacks rau lawv. Muaj ib lub com davhlau ya nyob twg nyob rau sab saum toj ntawm uas yog ib tug dub xeem lead. Thaum ntsuas qhov hluav taws xob thiab qhov tsis kam, cov hlau kuaj liab tau muab tso rau ntawm sab xis. Muaj cov qhov (sockets) rau qhov hluav taws xob: V thiab tiv thaiv ohm cov cim, thiab nyob rau sab laug ntawm lub 'meter' yog ob lub qhov (socket) rau ntsuas tam sim no, ib qho rau siab tam sim no ntawm 20 amps, thiab ib qho rau qhov tam sim no qis ntawm 200 mA. Thaum ntsuas qhov tam sim no, ib lub multimeter yuav tsum tau txuas nrog hauv series hauv Circuit Court los ntsuas nws. Thaum ntsuas capacitance, cov hlau kuaj liab tau muab tso rau hauv lub jack no, nco ntsoov ua tib zoo saib, txwv tsis pub nws yooj yim rau hlawv tawm lub multimeter.
5. Thaum ntsuas lub capacitance, kev ua haujlwm ntawm lub capacitor yog them. Nws yuav tsum tau tso tawm thaum lub sij hawm ntsuas. Peb tuaj yeem ncaj qha luv luv-circuit lub me me-tswj capacitor rau kev tso tawm. Ob lub xov hlau yog luv luv ua ke, thiab lub peev xwm loj ntawm lub capacitor yuav tsum tau txuas nrog hauv series. Nco ntsoov nco ntsoov tso cov qij taws lossis cov khoom siv hluav taws xob, txwv tsis pub yuav muaj kev phom sij ntawm hluav taws xob.
6. Cov iav tiv thaiv thiab cov buzzer iav yog lub tsho, thiab hfe iav yog lub iav rau ntsuas lub triode. Thaum ntsuas, koj yuav tsum nco ntsoov lub hwj chim tawm ntawm qhov ntsuas, thiab tsis txhob ntsuas nrog hluav taws xob, txwv tsis pub lub multimeter yuav hlawv.
7. Lub DC voltage ntau yog muab faib ua tus ncej zoo thiab tsis zoo, tshwj xeeb tshaj yog rau pointer multimeters, yog tias tus ncej zoo thiab tsis zoo thim rov qab, nws muaj feem ntau tias tus pointer yuav thim rov qab thiab khoov lub koob. Cov no yog txhua yam uas yuav tsum tau xyuam xim rau. Nws tuaj yeem pom ntawm lub xov tooj ntawm lub tshuab ntsuas qhov siab tshaj plaws DC voltage yog 1000 volts, AC voltage yog 750 volts, qhov siab tshaj plaws AC thiab DC tam sim no yog 20 amps, thiab qhov tsawg kawg nkaus yog 20 mA. Thaum ntsuas, qhov siab tshaj plaws ntawm multimeter tsis tuaj yeem tshaj. Los ntawm kev xaiv lub iav loj mus rau lub iav me me, yuav tsum tau them nyiaj tshwj xeeb. Cov no yog cov kev paub yooj yim tshaj plaws thiab yooj yim rau kev siv multimeters.
