Yuav ua li cas siv ib tug multimeter los ntsuas qhov to
Multimeters, tseem hu ua multimeters, multimeters, peb-meters, multimeters, thiab lwm yam, yog qhov tseem ceeb ntsuas ntsuas hauv hluav taws xob hluav taws xob thiab lwm lub tuam tsev. Feem ntau, lub hom phiaj tseem ceeb yog ntsuas qhov voltage, tam sim no thiab tsis kam. Multimeters muab faib ua pointer multimeters thiab digital multimeters raws li hom zaub. Nws yog ib qho kev ntsuas ntau yam thiab ntau yam ntsuas. Feem ntau, lub multimeter tuaj yeem ntsuas DC tam sim no, DC voltage, AC tam sim no, AC voltage, tsis kam thiab suab qib, thiab lwm yam, thiab qee qhov kuj tuaj yeem ntsuas AC tam sim no, capacitance, inductance thiab semiconductor. Qee qhov ntsuas (xws li ) thiab lwm yam.
Lub multimeter tuaj yeem siv tsis tau tsuas yog ntsuas qhov tsis kam ntawm cov khoom ntsuas, tab sis kuj ntsuas qhov DC voltage. Qee qhov multimeters tuaj yeem ntsuas qhov tseem ceeb ntawm cov transistors thiab lub peev xwm ntawm capacitors. Nws yog ib qho ntawm cov kev txawj ntse tshaj plaws ntawm kev siv tshuab hluav taws xob kom ua tau zoo hauv kev siv multimeters. Multimeters muaj xws li pointer multimeters thiab digital multimeters. Lub pointer multimeter yog ib qho kev ntsuas ntau yam nrog lub ntsuas lub taub hau raws li cov ntsiab lus tseem ceeb, thiab ntsuas tus nqi yog nyeem los ntawm tus pointer ntawm lub taub hau meter. Qhov ntsuas tus nqi ntawm digital multimeter yog ncaj qha tso tawm hauv daim ntawv digital los ntawm cov kua siv lead ua kua, uas yooj yim nyeem, thiab qee qhov kuj muaj lub suab nrov ua haujlwm. Multimeter yog ib lub 'meter' uas sib txuas lub voltmeter, ammeter thiab ohmmeter hauv ib lub taub hau.
Qhov teeb meem ntawm kev ntsuas 220V to nrog lub multimeter tsis haum, vim tias qhov koj xav ntsuas yog qhov xau tam sim no. Lub multimeter tsis muaj zog hauv kev ntsuas tsis muaj zog AC tam sim no, thiab nws muaj teeb meem los ntsuas qhov tsis raug. Yog tias koj hais kom ntsuas, koj yuav tsum siv lub tshuab hloov tam sim no. Siv lub ntsuas ntsuas ntsuas los ntsuas, tab sis xaiv lub ntsuas ntsuas ntsuas nrog qhov tsim nyog thiab muaj txiaj ntsig zoo dua.
Yog tias koj xav tias qhov hluav taws xob xau, koj tuaj yeem siv lub Circuit Court breaker nrog kev tiv thaiv los ntawm kev txiav txim, txiav txim qhov ntau ntawm cov xau ntu ntawm ntu, thiab daws teeb meem.
Raws li kev siv hluav taws xob los thaiv qhov xau ntawm txoj kab ntsuas, kuv tsis xav tias nws tsim nyog. Vim tias nws yog qhov xau, qhov kev tiv thaiv ntawm cov hlau nyob thiab kev tiv thaiv hauv av tsis yog qhov kawg, tab sis qhov voltage ntawm multimeter tsis txaus los piav qhia cov rwb thaiv tsev ntawm lawv, uas yog hais tias, qhov rwb thaiv tsev ntawm 9V yog txawv kiag li. los ntawm 220V. Yog li ntawd, lub rwb thaiv tsev tiv thaiv yog ntsuas ntawm ib qho mob siab tshaj qhov hluav taws xob hluav taws xob kom tau txais cov ntaub ntawv txhim khu kev qha. Yog li koj yuav tsum siv lub shaker.
Tau kawg, yog tias koj tsuas yog sim seb puas muaj qhov luv luv lossis ib txoj hauv kev ntawm cov hlau nyob thiab cov av tiv thaiv, nws tseem tuaj yeem siv multimeter los thaiv nws. Tsuas yog ntsuas tsis tau cov ntaub ntawv rwb thaiv tsev ntawm lawv.
Hais lus nruj me ntsis, ib qho megger yuav tsum tau siv los ntsuas seb cov kab hluav taws xob tiv thaiv hluav taws xob puas los yog tsis. Lub megger yog sib npaug rau 1000v lossis 500v generator. Cov xau tam sim no dhau los ntawm qhov ntsuas qhov ntsuas hauv lub megger, thiab qhov ntsuas qhov ntsuas hluav taws xob yog tsim los ntawm qhov tsis kam. Raws li ib txwm muaj, tus nqi ruaj khov ntau dua 0.5 megohm yog tsim nyog. Lub roj teeb hauv lub multimeter yog 9v rau 15v. Cov ntaub ntawv tiv thaiv thiab qhov hluav taws xob tsuas tuaj yeem txiav txim siab luv luv, thiab txiav txim siab seb puas muaj qhov xau.
Yuav ua li cas ntsuas qhov to nrog multimeter
1. Kev ntsuas hluav taws xob: tua thiab txiav tawm tag nrho cov khoom siv hluav taws xob, siv lub tshuab hluav taws xob multimeter nrog RX10K iav, ib qho kev xeem txhuas txuas nrog cov hlau nyob, thiab lwm qhov kev xeem cov hlau lead yog grounded (los yog faucet). Nws yuav tsum qhia infinite kuj, txwv tsis pub yuav muaj to.
2. Kev ntsuas nyob: Siv lub ntsuas ntsuas nrog 250-volt AC voltage ntau los ntsuas lub plhaub hlau ntawm cov khoom siv hluav taws xob uas xav tias yuav xau. Ib qho kev xeem txhuas txuas nrog lub plhaub, thiab lwm qhov kev xeem cov hlau lead yog hauv av (lossis lub faucet). Thaum tus pointer qhia qhov voltage siab dua 30-50 volts, hloov nws Siv AC 50 volts. Yog tias cov khoom siv hluav taws xob tau lees paub tias siab dua 30 volts, nws yog qhov xau, thiab qis dua 30 volts yog qhov qub. Tom qab ntawd hloov lub xoom thiab hluav taws xob hluav taws xob ntsaws cov xov hlau thiab ntsuas dua kom paub meej.
3. Kev ntsuas hluav taws xob ntawm cov xaim nyob thiab cov xaim nyob nruab nrab (lossis cov xaim nyob thiab cov xaim nyob): tua thiab txiav tawm tag nrho cov khoom siv hluav taws xob, ntsuas qhov kev tiv thaiv ntawm cov hlau nyob thiab cov xaim nruab nrab, nws yuav tsum tsis muaj qhov kawg, txwv tsis pub nws yog to.
Qhov tseeb ntawm cov txheej txheem saum toj no rau kev daws teeb meem yog 99.9 feem pua, yooj yim, ceev thiab siv tau, thiab megohm tshwj xeeb shaker tsuas yog siv hauv engineering, thiab kev siv kev ua haujlwm tsawg hauv kev saib xyuas. Tsuas yog thaum lub multimeter tau lees paub tias yog qhov zoo, tab sis cov kab yog qhov tseeb, nws tuaj yeem siv Shake lub 'meter', tab sis tsis tuaj yeem kuaj pom los ntawm multimeter.
