Kev tiv thaiv yog ntsuas ntawm qhov nyuaj ntawm cov khoom siv hluav taws xob kom ntws los ntawm ib yam khoom tshwj xeeb. Kev tawm tsam zoo ib yam li kev sib txhuam ntawm cov khoom uas tau ntsib thaum nws txav lossis txav mus rau saum npoo. Kev tiv thaiv yog ntsuas hauv ohms; 1 ohm yog sib npaug rau 1 volt ntawm qhov hluav taws xob faib los ntawm 1 ampere ntawm qhov tam sim no. Kev tiv thaiv tuaj yeem ntsuas nrog analog lossis digital multimeter lossis ohmmeter.
Kauj ruam
Txoj Kev 1 ntawm 3: Ntsuas Kev Tiv Thaiv nrog Digital Multimeter
Kauj Ruam 1. Xaiv yam khoom uas nws xav tau los ntsuas
Rau qhov ntsuas tau raug tshaj plaws, ntsuas qhov tsis kam ntawm cov khoom sib cais. Tshem tawm cov khoom siv los ntawm Circuit lossis kuaj cov khoom ua ntej koj teeb tsa lawv. Kev ntsuas cov khoom hauv Circuit Court tuaj yeem ua rau nyeem tsis raug vim yog muaj lwm cov khoom siv.
Yog tias koj tab tom sim ib qho Circuit Court lossis txawm tias koj tsuas yog tshem tawm cov khoom, ua kom ntseeg tau tias txhua lub zog ntws mus rau hauv Circuit Court raug kaw ua ntej mus
Kauj Ruam 2. Ntxig cov kab sojntsuam mus rau hauv qhov tseeb sojntsuam cable qhov
Hauv ntau lub ntsuas cua, ib qho ntawm cov kab lus sojntsuam yog xim dub thiab lwm qhov yog liab. Multimeters feem ntau muaj ntau lub qhov muag, nyob ntawm seb lawv siv los ntsuas qhov tsis kam, qhov hluav taws xob, lossis tam sim no. Feem ntau, txoj cai siv los ntsuas kev tiv thaiv muaj daim ntawv lo "COM" (los ntawm lo lus sib xws) thiab lub qhov yog sau nrog cov ntawv Greek omega, uas yog lub cim rau "ohm".
Ntxig cov tshuaj ntsuam dub coj mus rau hauv lub qhov uas sau tias "COM" thiab cov tshuaj liab coj mus rau hauv lub qhov uas sau tias "ohms"
Kauj Ruam 3. Qhib lub multimeter thiab xaiv qhov ntsuas zoo tshaj plaws
Qhov tsis kam ntawm cov khoom tiv thaiv yog los ntawm ohms (1 ohm) txog megaohms (1,000,000 ohms). Txhawm rau kom tau txais kev nyeem tsis raug, koj yuav tsum teeb lub multimeter rau qhov raug kom raug rau koj cov khoom. Qee qhov digital multimeter yuav txiav qhov ntau, tab sis lwm tus yuav tsum tau teeb tsa tus kheej. Yog tias koj muaj kev kwv yees dav dav ntawm qhov tsis kam ua haujlwm, kho qhov ntau raws li koj qhov kwv yees. Yog tias koj tsis paub meej, koj tuaj yeem txiav txim siab qhov ntau los ntawm kev sim ua haujlwm.
- Yog tias koj tsis paub ntau, pib nrog qhov nruab nrab nruab nrab, feem ntau yog 20 kiloohms (kΩ).
- Kov ib qho ntawm cov kab lus sojntsuam mus rau qhov kawg ntawm koj cov khoom siv thiab lwm qhov kev sojntsuam mus rau lwm qhov kawg ntawm koj cov khoom siv.
- Tus lej ntawm lub vijtsam yuav tso tawm 0.00 OL, lossis tus nqi tiv thaiv tiag tiag.
- Yog tias tus nqi xoom, qhov ntau yog siab dhau thiab yuav tsum qis dua.
- Yog tias OL (thauj khoom ntau dhau) tshwm ntawm qhov screen, qhov qis yog qis heev thiab yuav tsum tau nce mus rau qhov siab tshaj tom ntej. Rov ua dua qhov kev tivthaiv nrog qhov chaw tshiab.
- Yog tias muaj qee tus lej tshwm ntawm qhov screen xws li 58, qhov ntawd yog qhov tsis kam ua. Nco ntsoov coj mus rau hauv tus account qhov ntau siv. Ntawm lub digital multimeter, kaum sab xis saum toj yog koj qhov teeb tsa. Yog tias k tshwm rau ntawm kaum tsev, qhov kev tiv thaiv tiag tiag yog 58 k.
- Thaum koj tau txais thaj tsam raug, sim txo qis ib zaug ntxiv kom pom tias koj tuaj yeem tau txais kev nyeem ntawv raug dua. Siv qhov ntsuas qis tshaj plaws rau qhov nyeem tau raug qhov tseeb tshaj plaws.
Kauj Ruam 4. Kov lub xov tooj cua sojntsuam hlau mus rau qhov kawg ntawm cov khoom uas koj tabtom sim
Ib yam li thaum koj kho qhov ntau, kov ib qho kev sojntsuam coj mus rau ib qho kawg ntawm kev tivthaiv thiab lwm qhov kev sojntsuam mus rau lwm qhov kawg ntawm kev tivthaiv. Tos tus lej kom nres nce lossis poob thiab sau cia. Qhov no yog qhov txhaws ntawm koj cov khoom.
Piv txwv li, yog tias koj nyeem yog 0.6 thiab MΩ tshwm nyob rau sab xis saum toj, koj qhov tiv thaiv tiv thaiv yog 0.6 megaohms
Kauj Ruam 5. Tua lub multimeter
Thaum koj ua tiav ntsuas tag nrho koj cov khoom siv, tua lub multimeter thiab tshem tawm cov sojntsuam hlau rau cia.
Txoj Kev 2 ntawm 3: Ntsuas Kev Tiv Thaiv nrog Analog Multimeter
Kauj Ruam 1. Xaiv yam khoom uas nws xav tau los ntsuas
Rau qhov ntsuas tau raug tshaj plaws, ntsuas qhov tsis kam ntawm cov khoom sib cais. Tshem tawm cov khoom siv los ntawm Circuit lossis kuaj cov khoom ua ntej koj teeb tsa lawv. Kev ntsuas cov khoom hauv Circuit Court tuaj yeem ua rau nyeem tsis raug vim yog muaj lwm cov khoom siv.
Yog tias koj tab tom sim ib qho Circuit Court lossis txawm tias koj tsuas yog tshem tawm cov khoom siv, ua kom ntseeg tau tias txhua lub zog ntws mus rau hauv Circuit Court raug kaw ua ntej mus
Kauj Ruam 2. Ntxig cov kab sojntsuam mus rau hauv qhov tseeb sojntsuam cable qhov
Hauv ntau lub ntsuas ntsuas, ib qho ntawm cov kab lus sojntsuam yog xim dub thiab lwm qhov yog liab. Multimeters feem ntau muaj ntau qhov apertures, nyob ntawm seb lawv siv los ntsuas qhov tsis kam, qhov hluav taws xob, lossis tam sim no. Feem ntau, txoj cai siv los ntsuas kev tiv thaiv muaj daim ntawv lo "COM" (los ntawm lo lus sib xws) thiab lub qhov yog sau nrog cov ntawv Greek omega, uas yog lub cim rau "ohm".
Ntxig cov tshuaj ntsuam dub coj mus rau hauv lub qhov uas sau tias "COM" thiab cov tshuaj liab coj mus rau hauv lub qhov uas sau tias "ohms"
Kauj Ruam 3. Qhib lub multimeter thiab xaiv qhov ntsuas zoo tshaj plaws
Qhov tsis kam ntawm cov khoom tiv thaiv yog los ntawm ohms (1 ohm) txog megaohms (1,000,000 ohms). Txhawm rau kom tau txais kev nyeem tsis raug, koj yuav tsum teeb lub multimeter rau qhov raug kom raug rau koj cov khoom. Yog tias koj muaj kev kwv yees dav dav ntawm qhov tsis kam ua haujlwm, kho qhov ntau raws li koj qhov kwv yees. Yog tias koj tsis paub meej, koj tuaj yeem txiav txim siab qhov ntau los ntawm kev sim ua haujlwm.
- Yog tias koj tsis paub ntau, pib nrog qhov nruab nrab nruab nrab, feem ntau yog 20 kiloohms (kΩ).
- Kov ib qho ntawm cov kab lus sojntsuam mus rau qhov kawg ntawm koj cov khoom siv thiab lwm qhov kev sojntsuam mus rau lwm qhov kawg ntawm koj cov khoom siv.
- Lub koob txhaj tshuaj yuav txav mus thoob plaws lub vijtsam thiab nres ntawm qee qhov taw qhia qhia qhov tsis kam ntawm koj cov khoom siv.
- Yog tias rab koob txav mus rau qhov muaj nuj nqis siab (sab laug), koj yuav tsum nce qhov chaw teeb tsa, tig lub multimeter qis, thiab sim dua.
- Yog tias rab koob txav mus rau tus nqi qis (sab xis), koj yuav tsum txo qis qhov chaw, tig lub multimeter tawm, thiab sim dua.
- Analog multimeter yuav tsum yog xoom txhua lub sijhawm hloov chaw thiab ua ntej ntsuas cov khoom. Kov cov xov hlau sojntsuam rau ib leeg los tsim hluav taws xob luv. Nco ntsoov tias rab koob tau taw qhia rau xoom siv Ohm Control lossis Zero Kho tom qab cov xov hlau soj ntsuam sib kov.
Kauj Ruam 4. Kov lub xov tooj cua sojntsuam hlau mus rau qhov kawg ntawm cov khoom uas koj tabtom sim
Ib yam li thaum koj kho qhov ntau, kov ib qho kev sojntsuam coj mus rau ib qho kawg ntawm kev tivthaiv thiab lwm qhov kev sojntsuam mus rau lwm qhov kawg ntawm kev tivthaiv. Qhov kev tiv thaiv kab mob hauv lub multimeter yog nyeem ntawm sab xis mus rau sab laug. Sab xis yog xoom thiab sab laug yog li 2k (2,000). Muaj ntau qhov ntsuas hauv analog multimeter. Yog li, nco ntsoov saib cov nplai uas sau los ntawm sab xis mus rau sab laug.
Raws li qhov ntsuas nce mus, qhov txiaj ntsig siab dua tau txais clustered thiab kaw ua ke. Kev teeb tsa txoj cai yog qhov tseem ceeb kom tau txais kev nyeem raug rau koj cov khoom
Kauj Ruam 5. Nyeem cov teeb meem
Thaum koj kov cov xov hlau sojntsuam mus rau qhov tivthaiv, rab koob yuav nres ntawm qhov chaw nruab nrab ntawm qhov siab tshaj thiab qis tshaj. Txheeb xyuas kom paub tseeb tias koj pom qhov ntsuas ohm thiab nco ntsoov tus nqi qhia los ntawm koob. Qhov no yog qhov txhaws ntawm koj cov khoom.
Piv txwv li, yog tias koj teeb tsa qhov ntau txog 10 thiab rab koob nres ntawm 9, koj qhov tiv thaiv tiv thaiv yog 9 ohms
Kauj Ruam 6. Teeb qhov hluav taws xob rau qhov siab
Tom qab koj ua tiav siv lub multimeter, koj xav kom paub tseeb tias lub multimeter tau khaws cia kom raug. Teeb qhov hluav taws xob mus rau qhov siab ntau ua ntej tua lub multimeter kom ntseeg tau tias lub multimeter yuav tsis raug puas tsuaj yog tias muaj ib zaug siv los ntawm ib tus neeg uas tsis nco qab teeb tsa ua ntej. Tua lub multimeter thiab unplug lub sojntsuam rau cia.
Txoj Kev 3 ntawm 3: Ua Kom Muaj Kev Xeem Zoo
Kauj Ruam 1. Kuaj qhov tsis kam ntawm cov khoom siv, tsis yog siv hluav taws xob
Kev ntsuas qhov tsis sib xws hauv cov khoom siv hauv Circuit Court yuav ua rau nyeem tsis raug vim tias lub multimeter tseem ntsuas qhov tsis kam ntawm cov khoom tiv thaiv hauv kev sim nrog rau lwm yam khoom hauv Circuit. Txawm li cas los xij, qee zaum, nws yog qhov tsim nyog los ntsuas qhov tsis kam ntawm cov khoom siv hauv Circuit Court.
Kauj Ruam 2. Kuaj tsuas yog cov khoom siv hluav taws xob
Kev ntws tam sim no los ntawm Circuit yuav ua rau nyeem tsis raug vim qhov nce ntxiv tam sim no yuav ua rau muaj kev tiv thaiv ntau dua. Ib qho ntxiv, qhov hluav taws xob ntxiv tuaj yeem ua rau lub multimeter puas. (Yog li, tsis pom zoo ntsuas lub roj teeb.)
Txhua lub capacitor hauv Circuit Court raug sim rau kev tiv thaiv yuav tsum tau rov ua dua ua ntej raug sim. Lub tshuab hluav taws xob tso tawm tuaj yeem nqus tus nqi los ntawm lub ntsuas hluav taws xob tam sim no ua rau muaj kev hloov pauv me ntsis hauv kev nyeem ntawv
Kauj Ruam 3. Txheeb xyuas cov diodes hauv Circuit Court
Diodes ua hluav taws xob hauv ib qho kev qhia xwb; yog li, thim rov qab txoj haujlwm ntawm lub xov tooj cua sojntsuam hlau hauv lub voj voog uas muaj lub diode yuav ua rau muaj kev nyeem ntawv sib txawv.
Kauj Ruam 4. Saib koj cov ntiv tes
Ob peb tus tiv thaiv lossis cov khoom siv yuav tsum tau tuav kom muaj kev sib cuag nrog lub xov tooj cua sojntsuam xov hlau. Tuav tus tiv thaiv lossis sojntsuam xaim nrog koj tus ntiv tes yuav ua rau nyeem tsis raug vim koj lub cev nqus tau tam sim no los ntawm Circuit. Qhov no tsis yog teeb meem loj thaum siv cov ntsuas hluav taws xob qis, tab sis nws tuaj yeem yog teeb meem thaum ntsuas kev tiv thaiv nrog lub ntsuas hluav taws xob siab ntau.
Ib txoj hauv kev kom koj txhais tes tawm ntawm cov khoom sib xyaw yog lo lawv hauv cov ntawv xeem lossis cov ntawv ci thaum kuaj tsis kam. Koj kuj tseem tuaj yeem txuas tus nab kuab mus rau lub xov tooj cua sojntsuam xaim kom tus tiv thaiv kab rov tav nyob ruaj khov thaum kuaj
Lub tswv yim
- Qhov tseeb ntawm multimeter nyob ntawm tus qauv. Tsis kim multimeter feem ntau yog qhov tseeb rau 1 feem pua ntawm tus nqi raug. Koj yuav tsum tau them ntau dua rau qhov ntsuas qhov tseeb ntau dua qhov no.
- Koj tuaj yeem txheeb xyuas qhov tsis kam ntawm qhov muab tshuaj tiv thaiv raws tus lej thiab xim xim ntawm kab ntawm tus tiv thaiv. Qee tus tiv thaiv siv 4 kab kab, thaum lwm tus siv 5 kab kab. Ib txoj kab yog siv los sawv cev rau qib raug.
