Lub ohmmeter yog lub tshuab hluav taws xob uas ntsuas kev tiv thaiv hauv cov khoom siv hluav taws xob. Lub ohmmeter muaj cov ntsuas ntsuas nrog ntsuas qhov ntsuas lossis cov duab digital, tus xaiv ntau yam, thiab ob txoj hauv kev (sojntsuam). Kawm paub siv lub cuab yeej no li cas los ntsuas kev tiv thaiv ntawm yuav luag txhua yam khoom.
Kauj ruam
Kauj Ruam 1. Ua kom tiav kev sib txuas thiab/lossis tua tag nrho lub zog rau hauv Circuit hauv kev sim
Txhawm rau kom tau txais kev ntsuas raug thiab kom ntseeg tau tias koj muaj kev nyab xeeb, nws tau pom zoo tias qhov kev ntsuas hauv Circuit yuav tsum raug kaw. Ohmmeter yuav muab hluav taws xob / qhov hluav taws xob thiab qhov tam sim no yog li nws tsis xav tau lub zog los ntawm lwm qhov chaw. Raws li Blue Point's volt/ohmmeter cov lus qhia qhia, kev ntsuas hluav taws xob tuaj yeem "ua rau lub ntsuas hluav taws xob puas tsuaj, Circuit Court, thiab * koj * tus kheej."
Kauj Ruam 2. Xaiv ohmmeter uas haum rau koj xav tau
Analog ohmmeters muaj cov haujlwm yooj yim heev thiab tsis kim, ntxiv rau qhov dav dav ntawm 0-10 txog 0-10,000 ohms. Digital ohmmeters muaj qhov zoo sib xws lossis "pib-ntau" ntau, uas yog, lawv nyeem cov cuab yeej ua haujlwm tsis zoo thiab xaiv qhov raug kom raug.
Kauj Ruam 3. Txheeb xyuas ohmmeter kom pom lub roj teeb zoo li cas
Ib qho tshiab ohmmeter yuav twb muaj lub roj teeb built-in, lossis nws tuaj yeem tuaj hauv pob cais rau tom qab ua khub.
Kauj Ruam 4. Ntxig cov kab hlau lead rau hauv qhov ntsuas qhov ntsuas
Rau ntau lub ntsuas ntsuas, koj yuav pom "sib xws", lossis tsis zoo txuas, thiab "zoo" txuas. Tej zaum lawv yuav txawv ntawm xim liab (+) thiab xim dub (-).
Kauj Ruam 5. Teem lub ntsuas ntsuas mus rau xoom yog tias lub cuab yeej tau nruab nrog lub pob qhov rooj
Nco ntsoov tias qhov ntsuas ntsuas tau tshwm nyob rau hauv kev coj rov qab ntawm cov ntsuas feem ntau, piv txwv li tsis muaj kev tiv thaiv sab xis, thiab tiv taus siab heev ntawm sab laug. Zero tsis kam yuav tsum tau saib xyuas thaum cov neeg soj ntsuam tau txuas ncaj qha rau ib leeg. Koj tuaj yeem kho qhov kev tiv thaiv los ntawm kev kov qhov kawg ntawm qhov kev sojntsuam ua ke thiab tig lub pob "kho" kom txog thaum lub koob qhia rau xoom.
Kauj Ruam 6. Xaiv qhov Circuit lossis ntaus ntawv hluav taws xob uas koj xav sim
Raws li kev tawm dag zog, koj tuaj yeem sim txhua yam uas ua hluav taws xob, xws li txhuas ntawv ci lossis xaum cim rau ntawm ib daim ntawv. Txhawm rau nkag siab txog qib ntawm qhov raug ntawm kev ntsuas ntsuas, yuav ob peb yam sib txawv ntawm cov khw muag khoom siv hluav taws xob, lossis qee yam khoom siv uas nws tus nqi tiv thaiv tau paub.
Kauj Ruam 7. Kov ib qho kev sojntsuam mus rau ib qho kawg ntawm lub tshuab hluav taws xob, thiab lwm qhov kev sojntsuam mus rau lwm qhov kawg, thiab sau cov ntsuas ntsuas ntawm lub cuab yeej
Yog tias koj yuav 100 tus neeg tiv thaiv kab mob, tso qhov kev tshuaj xyuas hla txhua tus neeg xyuas pib ntawm tus tiv thaiv, thiab xaiv qhov ntau ntawm 1000-10,000 ohm. Tom qab ntawd, xyuas lub ntsuas kom paub tseeb tias qhov txiaj ntsig yog qhov tseeb 1000 ohms.
Kauj Ruam 8. Rho tawm cov khoom sib txuas hauv cov hluav taws xob sib txuas los ntawm cov xov hlau los ntsuas lawv ib qho
Yog tias koj nyeem tus lej ohms ntawm tus tiv thaiv ntawm daim ntawv luam tawm Circuit Board, nws txhais tau tias koj yuav tsum tau muag lossis tshem tawm cov neeg tawm tsam kom paub tseeb tias cov txiaj ntsig tau los ntawm lwm txoj hauv kev hauv Circuit yog raug.
Kauj Ruam 9. Nyeem qhov tsis kam ntawm cov xov hlau lossis cov kab txuas ntawm lub Circuit Court kom pom tias puas muaj luv lossis qhib kev puas tsuaj hauv Circuit Court
Yog tias qhov ntsuas ntsuas pom "tsis muaj qhov kawg ohms" (tsis muaj qhov kawg ohms), nws txhais tau tias tsis muaj txoj hauv kev uas tuaj yeem dhau los ntawm hluav taws xob tam sim no. Hauv lwm lo lus, tej zaum yuav muaj cov khoom siv hluav taws xob hauv lub Circuit Court, lossis tus neeg ua haujlwm tsis raug. Txawm li cas los xij, vim tias ntau lub vojvoog muaj cov khoom siv "rooj vag" (transistors lossis semiconductors), diodes, thiab cov khoom siv hluav taws xob, koj yuav tsis nyeem qhov txuas ntxiv txawm tias thaum ua tiav Circuit Court txuas nrog tas li, uas txhais tau tias nws nyuaj rau sim ntsuas qhov ua tiav siv tsuas yog ib qho ohmmeter..
Kauj Ruam 10. Tua lub ohmmeter thaum tsis siv
Yog tias tsis tua, qee zaum cov tshuaj sojntsuam tuaj yeem luv thaum lub cuab yeej khaws cia thiab tso roj teeb.
Lub tswv yim
- Yog tias koj tab tom yuav ib qho ohmmeter rau kev siv ib txwm siv, yuav ib lub ntsuas ntsuas zoo, uas muaj peev xwm ntsuas lwm qhov txiaj ntsig hluav taws xob xws li qhov hluav taws xob thiab tam sim no.
- Paub koj tus kheej nrog cov lus siv hluav taws xob thiab hluav taws xob, cov phiaj xwm hluav taws xob hluav taws xob, thiab cov duab kos (lossis txuas).
- Koj yuav tsum paub tias txawm hais tias tus tiv thaiv qhia pom 1000 ohm nyeem, qhov sib txawv tuaj yeem nce txog 150 ohms. Cov resistors me me yuav hloov pauv los ntawm ob peb ohms, thiab qhov sib txawv no ntau dua hauv cov neeg tawm tsam loj
- Sim cov kev sim sib txawv nrog kev siv hluav taws xob. Kos kab rau ntawm ib daim ntawv uas muaj cov xaum graphite, thiab kov qhov sojntsuam ntawm txhua qhov kawg. Koj yuav pom tias cov kab xaum no ua hluav taws xob.
- Txhawm rau kawm paub txog ohmmeter qhov ntau, koj tseem tuaj yeem yuav ntau yam ntawm cov neeg tawm tsam thiab ntsuas txhua qhov rau qhov tsis kam.
