Yuav ua li cas nyeem tus pointer multimeter kom meej
Cov multimeter digital muaj kev nyeem tau yooj yim, raug siab, muaj nuj nqi nplua nuj, thiab muaj kev cuam tshuam me me rau hauv Circuit Court. Txawm li cas los xij, digital multimeter siv qhov ntsuas tam sim, yog li qee zaum tus lej dhia.
Txawm hais tias qhov tseeb ntawm tus pointer multimeter tsis siab, nws muaj peev xwm intuitively muaj kev cuam tshuam qhov kev hloov ntawm qhov kev tiv thaiv tus nqi ntawm cov khoom ntsuas, thiab nws muaj peev xwm tiv thaiv kev cuam tshuam.
Tam sim no tseem muaj ntau tus phooj ywg hluav taws xob uas nyiam siv pointer multimeters, tshwj xeeb tshaj yog qee tus qub hluav taws xob muaj kev hlub tshwj xeeb rau pointer multimeters; thiab pib siv pointer multimeters rau kev qhia hluav taws xob thiab kev tshawb fawb.
Nws tuaj yeem pom los ntawm dial tias:
Tsab ntawv "Ω" yog cim rau ntawm thawj kab ntawm cov kab ntsuas, qhia tias qhov ntsuas tau ntawm cov kab ntsuas yog nyob rau hauv "Ω", yog li thawj kab yog qhov ntsuas kab. Ntawm no peb yuav tsum tau them sai sai rau: sab laug ntawm txoj kab kev tiv thaiv kab yog "∞", uas txhais tau tias infinity; sab xis yog 0, yog li qhov kev nyeem ntawv yog los ntawm sab xis mus rau sab laug thaum ntsuas qhov tsis kam.
Qhov thib ob kab ntawm cov qhab nia yog cim nrog DCV, ACV. Ntawm lawv, DC txhais tau tias ncaj qha tam sim no, thiab V yog chav tsev ntawm qhov hluav taws xob. Yog tias lawv sib xyaw ua ke, DCV txhais tau hais tias qhov hluav taws xob ncaj qha tam sim no. Ib yam li ntawd, AC txhais tau tias AC thiab V yog chav tsev ntawm qhov hluav taws xob, yog li ACV txhais tau tias AC voltage. DCmA kuj tau cim rau ntawm sab xis ntawm kab thib ob ntawm kab kab, qhov twg DC txhais tau tias tam sim no ncaj qha thiab mA yog chav tsev tam sim no. Yog tias lawv sib xyaw ua ke, DCmA txhais tau tias tam sim no ncaj qha. Tom qab ntawd cov kab thib ob ntawm cov kab ntsuas muaj peb pawg ua haujlwm, uas yog ntsuas AC, DC voltage, thiab DC tam sim no.
Qhov thib peb kab ntawm cov kab liab liab, cim nrog roj AC10V ntawm kab liab kab, qhia tias kab kab yog mob siab rau AC 10V. Tsuas yog thaum lub iav ntawm lub multimeter muab tso rau ntawm AC 10V, lub nplai kab tuaj yeem pom.
Plaub kab ntawm xiav zuam cim, uas yog cim C (uF). Ntawm lawv, C sawv cev rau capacitance, thiab uF sawv cev rau chav tsev "microfarad" ntawm capacitance. Piav tias qhov ntsuas kab yog siv los ntsuas lub peev xwm, thiab kev nyeem ntawv yog nyob rau hauv microfarads.
Qhov thib tsib kab kuj yog xiav zuam cim, nws yog cim hFE. Qhov twg hFE sawv cev rau qhov kev nthuav dav ntawm triode, ces cov kab ntsuas yog siv los ntsuas qhov magnification ntawm triode.
Ob kab ntawm BATT yog siv los ntsuas lub roj teeb lub zog. Lub pointer nyob rau hauv cheeb tsam liab txhais tau hais tias tsis muaj hwj chim, cheeb tsam xiav txhais tau hais tias muaj hwj chim txaus, thiab cov nqe lus nug cheeb tsam txhais tau hais tias lub roj teeb yuav tag.
Kab kawg ntawm dB yog siv los ntsuas qib.
pointer multimeter nyeem ntawv
Tom qab paub txog kev ua haujlwm ntawm txhua kab ntawm cov kab teev, peb tuaj yeem xaiv cov nplai sib txuas rau kev nyeem ntawv raws li cov zog sib txawv.
