Ua kom muaj kev cuam tshuam kev cuam tshuam ntawm digital multimeter
Digital multimeters tau siv dav thiab muaj qhov zoo ntawm cov tswv yim impedance siab thiab kev nyeem ntawv zoo. Txawm li cas los xij, hauv qee qhov kev siv, kev sib tsoo ntawm cov motors lossis cov khoom siv yuav cuam tshuam nrog cov digital multimeter. Anti-interference muaj nuj nqi. Qhov tseeb, kev tiv thaiv kev cuam tshuam kev ntsuas ntawm cov digital multimeters tsis nyuaj hauv txoj cai. Feem ntau, ib qho qis-pass lim circuit txuas nrog hauv series hauv kev ntsuas Circuit Court kom tsis txhob cuam tshuam kev cuam tshuam. Qhov kev ntsuas yooj yim tshaj plaws los tiv thaiv kev cuam tshuam ntau zaus yog txhawm rau txuas lub kauj hauv cov ntsuas hauv Circuit Court, thiab lub kauj yuav tsum nyob ze li sai tau rau qhov chaw nres nkoj ntawm multimeter. Lub kauj tuaj yeem suav hais tias yog siv cov hlau-hloov coil nrog cov hlau nplaum. Piv nrog rau cov cua-core coil, nws muaj cov yam ntxwv ntawm inductance loj thiab tsawg deformation nyob rau hauv siab. Txiav tawm lub 'meter' stick, ze rau lub input davhlau ya nyob twg ntawm lub multimeter, txuas lub inductance ntaus ntawv nyob rau hauv series, thiab thaum kawg kaw nws nrog ib tug tshav kub-shrinkable tes tsho rau sab nraum, uas yog heev zoo nkauj thiab ruaj. Yog tias tus neeg siv tsis kam txiav qhov kev sib txuas ntawm lub 'meter' stick, koj tuaj yeem sim clamp lub nplhaib sib nqus ntawm ib sab ntawm txoj kab sib txuas ze ntawm lub multimeter, thiab cua nws ob peb zaug ntxiv, uas kuj muaj cov nyhuv tib yam. Raws li cov inductance nyob rau hauv series. Nws yuav tsum tau muab sau tseg tias tom qab lub low-pass lim yog txuas nrog nyob rau hauv series nyob rau hauv lub ntsuas Circuit Court ntawm lub multimeter, nws yuav cuam tshuam rau kev ntsuas ntawm high-frequency AC signals (txog rau cov yam ntxwv ntawm lub low-pass lim), yog li nyob rau hauv cov pa kev ntsuas, cov yam ntxwv ntawm cov lim dej qis ntsig txog), yog li hauv kev ntsuas niaj hnub, yog tias lub tshuab multimeter tsis cuam tshuam loj heev, tsis tas yuav ntxiv cov lim dej qis.
Advanced Multimeter Fuses
Lub built-in fuse (feem ntau hu ua "fuse") ntawm cov multimeters siab heev yog kim, thiab tus nqi ntawm tus thawj accessory fuse rau FLUKE high-end watches yog yuav luag sib npaug rau lub teb chaws nkag-theem multimeter. Kev yuav cov fuses no los ntawm ntau txoj hauv kev muaj tus nqi sib txawv loj, thiab cov lus hais koj tau txais ntawm lub tshuab hluav taws xob fuse thiab cov ntsuas ntsuas hauv khw hluav taws xob yuav txawv heev. Rau cov fuses, ntev npaum li qhov loj tib yam, qhov sib txawv ntawm qhov tam sim no thiab qhov hluav taws xob tawg yog tib yam, thiab cov yam ntxwv nrawm nrawm sib npaug, lawv tuaj yeem hloov pauv tag nrho. Ntxiv nrog rau kev saib cov fuse tam sim no, kev xaiv ntawm fuse yuav tsum tau them sai sai rau qhov muaj peev xwm tawg tau siab. Qhov no yog qhov txawv ntawm qee qhov fuses cim 250V/1A thiab 000V/1A.
Lub peev xwm tawg yog hais txog seb lub fuse puas tuaj yeem thaiv qhov kev ua haujlwm ntawm tam sim no tom qab lub fuse tau tawg nyob rau hauv lub xeev high voltage, vim hais tias nyob rau hauv cov xwm txheej heev, lub high voltage yuav tsim ib tug arc nyob rau hauv cov huab cua mus txuas ntxiv mus ua tam sim no. Txawm hais tias lub peev xwm tawg ntawm fuses feem ntau raug saib xyuas los ntawm cov neeg siv tsis tau tshaj lij, nws muaj feem cuam tshuam rau kev ua haujlwm kev nyab xeeb thiab yuav tsum tsis txhob kwv yees. Cov neeg siv uas siv cov fuses uas tsis tshua muaj kev sib tw ua cov hloov pauv yuav tsum tsis txhob siv nws los ntsuas qhov hluav taws xob siab. Qhov tseeb, ntau tus nyiam nyiam siv hluav taws xob tsuas yog ua haujlwm nrog cov hluav taws xob qis thaum lawv ua tiav cov haujlwm me me hauv hluav taws xob. Pa fuses yuav tsis tshuab tam sim ntawd nyob rau hauv kaum ob vib nas this thaum lub tam sim no mus txog qhov ntsuas tam sim no los yog tshaj ib tug taw tes, thiab muaj cov yam ntxwv ncua sij hawm, yog li high-end multimeters yuav xaiv fast-acting fuses uas tshuab tam sim ntawd los tiv thaiv rhiab thiab kim electronics. khoom siv. FLUKE mainstream thiab high-end watches feem ntau siv ob lub fuses ntawm 440mA thiab 11A. Cov npe nrov fuse hauv kev lag luam suav nrog Bussmann thiab Litelfuse. SIBA kuj yog hom fuse nyiam rau ntau cov cuab yeej siv siab heev thiab yog qhov hloov tau zoo. Nws yuav tsum raug sau tseg tias qee qhov pheej yig lub npe loj lossis lub npe hu ua thawj fuses hauv Is Taws Nem yog cov khoom siv dag zog, uas muaj qhov cuam tshuam loj tam sim no thiab cov lus teb qeeb, uas tsis tuaj yeem tiv thaiv cov cuab yeej siab heev.
