Dab tsi yog qhov zoo dua los tiv thaiv kev cuam tshuam, digital multimeter lossis analog multimeter?
Cia kuv tham txog kuv qhov kev paub hauv kev siv nws. Kuv thawj zaug siv analog multimeter. Thaum siv nws, piv txwv li, qhov chaw tiv thaiv qee zaum yuav tsum tau hloov kho rau xoom. Thaum ntsuas qhov hluav taws xob, pib ntsuas los ntawm qhov chaw siab ua ntej txhawm rau tiv thaiv lub ntsuas hluav taws xob. Tsis tas li ntawd, koj yuav tsum ua kom ruaj khov thaum ntsuas. Thaum tus lej muaj nuj nqis raug teeb tsa, kab ntawm qhov pom yuav tsum yog perpendicular mus rau dial nto. Nws raug kev cuam tshuam ntau dua rau tib neeg thiab ib puag ncig.
Ntawm qhov tod tes, digital multimeters tsis muaj qhov tsis txaus siab saum toj no, thiab lawv cov input impedance loj, yog li tsis tas yuav txhawj xeeb txog qhov ntsuas kub.
Txawm li cas los xij, analog multimeter muaj qhov zoo ntawm kev nkag siab zoo thaum ntsuas qhov ntsuas.
Digital multimeters muaj qhov yuav tsum tau qis rau kev siv ib puag ncig, muaj ntau yam kev siv, muaj peev xwm tiv thaiv kev cuam tshuam, thiab kev nkag siab tsis zoo.
Analog multimeters yog qhov loj me, tsis yooj yim rau nqa, muaj qhov xav tau siab ntawm kev siv ib puag ncig, muaj peev xwm tiv thaiv kev cuam tshuam tsis zoo, thiab tsis yooj yim rau kev nyeem ntawv, tab sis lawv muaj qhov raug siab.
Tau kawg, analog multimeter muaj peev xwm tiv thaiv kev cuam tshuam zoo dua. Thaum ntsuas qee qhov hluav taws xob tsis zoo, xws li qhov hluav taws xob ntawm qee cov ntsiab lus hauv qhov hloov pauv zaus, cov kev nyeem ntawm digital multimeter yuav dhia random thiab nyeem tsis tau. Lub analog multimeter tsis muaj qhov teeb meem no, tab sis nws yog qhov tseeb thiab siv tau yooj yim. Qhov degree yog qhov phem tshaj qhov ntsuas digital. Hauv ntej, ob leeg muaj lawv qhov zoo thiab qhov tsis zoo.
Muaj ob hom analog watches: internal magnetism thiab sab nraud magnetism. Qhov yuam kev loj dhau los ntawm kev cuam tshuam ntawm hluav taws xob zoo li qub. Yog tias koj tsis ntseeg nws, yog tias koj rub koj txhais tes ntawm lub iav dial, txhais tes yuav tsis rov qab los. Cov watches digital yooj yim siv, tab sis txhua tus muaj nws qhov zoo thiab qhov tsis zoo.
Siv ib tug multimeter los txiav txim thawj thiab kawg kawg ntawm 6 connectors ntawm lub cev muaj zog
Yog hais tias lub luv luv strips txuas nrog peb lub terminals ntawm ib sab, nws yog lub hnub qub kev sib txuas ntawm lub cev muaj zog, raws li qhia nyob rau sab laug ntawm daim duab saum toj no; Yog hais tias peb lub luv luv strips txuas nrog nyob rau hauv parallel, nws yog delta kev twb kev txuas ntawm lub cev muaj zog, raws li qhia nyob rau sab xis ntawm daim duab saum toj no.
Tab sis nws yog ib qho teeb meem me ntsis los txiav txim thawj zaug thiab kawg kawg ntawm rau lub connectors ntawm lub cev muaj zog. Ib txoj kev siv feem ntau yog qhia hauv qab no.
1. Kho lub multimeter mus rau txoj hauj lwm buzzing thiab ntsuas 6 connectors ntawm lub cev muaj zog. Ob qhov kev sib txuas sib txuas tsim ib pab pawg thiab tuaj yeem muab faib ua 3 pawg. Cov no yog 3 windings ntawm peb-theem lub cev muaj zog.
2. Ces txhais peb windings li U1', U2', V1', V2', W1', W2', thiab txuas U1', V1', W1' nyob rau hauv parallel, thiab U2', V2', W2 'Ua ke nyob rau hauv parallel .
3. Kho lub multimeter mus rau lub milliamp (mA) ntau yam, thiab txuas ob qhov kev xeem coj mus rau lub parallel terminals ntawm U1', V1', thiab W1' thiab parallel terminals ntawm U2', V2', thiab W2' raws li.
4. Tig lub rotor lub cev muaj zog, tsis ceev heev, tsuas yog ib txwm tig ceev.
5. Tom qab ntawd saib tus taw qhia multimeter. Yog hais tias tus pointer tsis txav, nws txhais tau hais tias lub winding txhais yog lawm, vim hais tias cov sum ntawm lub rotor residual magnetism thiab qhov tsim nyog tus nqi ntawm induced electromotive quab yuam nyob rau hauv peb-theem lub cev muaj zog winding yog xoom.
6. Yog hais tias lub multimeter pointer txav, nws txhais tau hais tias qhov pib thiab qhov kawg ntawm ib pawg ntawm windings yog tsis ncaj ncees lawm. Koj yuav tsum tau hloov cov pob qij txha winding ib qho los ntawm ib qho thiab sim kom txog rau thaum lub multimeter pointer tsis txav.
