Vim li cas lub multimeter tsis tuaj yeem ntsuas qhov polarity ntawm kev hloov tam sim no?
Lub thiaj li hu ua alternating tam sim no hais txog nws cov polarity yog hloov pauv, thiab qhov kev hloov pauv ceev ceev heev, txawm tias nws yog tus taw tes lossis me ntsis siab dua dav dav digital multimeter, tsis tuaj yeem teb rau nws tam sim no polarity, nws polarity yog tus lej. Ntawm kev hloov pauv ntawm ib chav tsev ntawm lub sijhawm hu ua zaus, uas yog chav tsev ntawm Hertz, uas yog ua kev nco txog tus naas ej physicists Mr. Hertz thiab hu ua chav tsev ntawm physics. Vim hais tias lub polarity ntawm lub hwj chim mov alternates li nrog ib tug dav multimeter tsuas yog tsis tau ntsuas nws polarity, yog hais tias yuav tsum tau to taub lub polarity ntawm ib tug tej lub sij hawm, kuj yuav tsum tau hais tias yog lub polarity ntawm nws instantaneous txoj kev uas yooj yim, uas. yog tshwj xeeb rau kev soj ntsuam ntawm alternating tam sim no lossis ncaj qha tam sim no pulses ntawm cov twj siv hluav taws xob oscilloscopes.
Kev taw qhia ntawm kev hloov pauv tam sim no txhua lub sijhawm, tsis txhob hais txog polarity. Yog hais tias qhov ntsuas hluav taws xob kab xoom kab, koj tuaj yeem ua si lub multimeter mus rau AC voltage ntawm qib siab tshaj plaws, ib txhais tes tuav tus cwj mem dub lub taub hau, nrog tus cwj mem liab sojntsuam hlau, tus pointer deflection yog cov kab hluav taws, tsis deflect. yog lub zero kab. Tsis tas li ntawd, qee qhov digital multimeter niaj hnub no, nrog rau kev ua haujlwm ntawm lub zog ntsuas cwj mem.
Kev hloov tam sim no yog qhov loj thiab cov kev taw qhia ntawm lub sijhawm hloov pauv tam sim no, tsis muaj polarity, tsuas yog zaus, qhov zaus ntawm peb qhov kev hloov tam sim no yog 50 hertz, uas yog, tam sim no hloov pauv rov qab 50 zaug hauv ib ob, cov kev taw qhia hloov 100 zaug, cov lus nug nws tus kheej yog ib qho teeb meem.
Multimeter tsis tuaj yeem ntsuas capacitance yuav ua li cas
Yog tias koj muaj lub hauv paus tsis muaj zog tuaj yeem kho tau, ntawm chav kawm, ib qho tshiab kuj yog ib qho kev xaiv zoo, tom qab tag nrho, lub rooj tsis kim.
Cov ntaub ntawv multimeter capacitance feem ntau yog siv los txwv qhov tsis tu ncua AC teeb liab los ntawm tus resistor, ntxiv rau lub capacitor rau kev ntsuas, thiab tom qab ntawd cov lus tawm tswv yim los ntawm op-amp amplification limiting ntxiv rau AD hloov dua siab tshiab Circuit Court. Lub hom phiaj yuav tsum tau kuaj xyuas AC signal oscillator circuit, capacitor socket, op-amp amplifier path, range switch, thiab tam sim no limiting resistor filter capacitor.
Yog tias koj muaj oscilloscope yog ib nrab ntawm kev siv zog, ntsuas qhov waveform ntawm txhua lub voj voog tuaj yeem yooj yim txiav txim siab txog qhov txhaum, thiab tom qab ntawd nrhiav cov khoom tshwj xeeb.
Qhov tseeb tuaj yeem ntsuas lub peev xwm, taw tes 10k thaiv, ntsuas ntsuas digital tuaj yeem ntsuas. Ntsuas raws li lub hauv paus ntsiab lus ntawm capacitance them thiab tso tawm!
