AC clamp meter ntsuas tus qauv tam sim no
Nyob rau hauv cov kab nrog cov tam sim no loj, clamp ammeters feem ntau yog siv rau kev ntsuas, uas muaj kev nyab xeeb dua;
Ua ntej, teem lub multimeter mus rau qhov tam sim no ntau yam, thiab tom qab ntawd txuas nws hauv series mus rau lub voj voog ntawm qhov ntsuas tam sim no. Nws yuav tsum raug sau tseg tias yog tias nws yog DC Circuit Court, xyuam xim rau qhov polarity. Txawm hais tias koj ntsuas tam sim no lossis qhov voltage, koj yuav tsum kho lub ntsuas ntsuas rau cov iav sib thooj, uas yog, lub ntsuas hluav taws xob yuav tsum siab dua qhov voltage lossis tam sim no tus nqi ntawm cov khoom ntsuas. Yog tsis paub, kho kom siab tshaj tus nqi.
Thaum ntsuas tam sim no, lub ammeter yuav tsum tau txuas nrog hauv series nrog lub load, vim hais tias tam sim no nyob rau hauv series Circuit Court yog sib npaug txhua qhov chaw, yog li tam sim no dhau los ntawm ammeter yog lub load tam sim no yuav tsum tau ntsuas. Yog tias nws txuas tsis raug, nws txuas nrog rau kev sib txuas nrog lub nra. Vim tias qhov kev tiv thaiv sab hauv ntawm lub ammeter me me, qhov loj dua tam sim no yuav ntws hauv qab qhov hluav taws xob ntawm lub load, ua rau muaj kev puas tsuaj rau ammeter.
Thaum ntsuas qhov ntsuas hluav taws xob, voltmeter yuav tsum tau txuas nrog rau qhov sib npaug nrog cov khoom thauj, vim tias nyob rau hauv ib lub voj voog sib luag, qhov hluav taws xob hauv txhua ceg yog sib npaug, uas yog, qhov hluav taws xob ntawm ob qho kawg ntawm lub voltmeter yog qhov tseeb voltage ntawm lub load. Yog hais tias lub 'meter' yog muab tso rau hauv lub load Circuit Court, nws tsis tuaj yeem ntsuas. qhov tseeb voltage.
Tus qauv ntawm lub clamp ammeter yog qhov tseeb AC tam sim no transformer. Nws yog sib npaug rau lub transformer nrog tsuas yog ib tug thawj tig thiab ntau theem nrab lem. Qhov thib ob load yog yav dhau los AC ammeter.
Thaum lub clamp ammeter clamps rau hauv ib theem kab, nws yog sib npaug rau muaj thawj winding. Lub sijhawm no, kev khiav hauj lwm tam sim no induces magnetic flux nyob rau hauv lub core circuit ntawm lub clamp ammeter. Cov hlau nplaum sib nqus hla dhau los ntawm qhov sib nqus winding, induces ib theem nrab voltage thiab tsim ib tug tam sim no nyob rau hauv lub thib ob load. Qhov loj ntawm qhov nruab nrab tam sim no yog proportional rau thawj tam sim no, yog li tus nqi qhia los ntawm lub 'meter' tuaj yeem cuam tshuam ncaj qha rau qhov loj ntawm thawj qhov chaw ua haujlwm tam sim no. Yog li nws tsis tas yuav rhuav tshem Circuit Court los ntsuas tam sim no.
