Koj nyeem li cas ohmmeter?
Koj nyeem li cas ohmmeter?

Video: Koj nyeem li cas ohmmeter?

Video: Koj nyeem li cas ohmmeter?
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Anonim

Teem koj lub multimeter mus rau qhov siab tshaj plaws kuj muaj. Kev ua haujlwm tsis kam yog feem ntau qhia los ntawm lub cim cim rau kev tiv thaiv: Greek tsab ntawv omega (Ω), lossis qee zaum los ntawm lo lus "ohms." Kov ob lub ntsuas ntsuas ntawm koj lub ntsuas ntsuas ua ke. Thaum koj ua, lub 'meter' yuav tsum sau npe 0 ohms ntawm qhov tsis kam.

Yog li ntawd, qhov 0 nyeem ntawm ohmmeter txhais li cas?

Ohmmeter yog ib qho cuab yeej siv los ntsuas qhov tsis kam ntawm ib feem lossis lub voj voog. Nws qhia tias xoom ohms ua thaum tsis muaj kev tawm tsam ntawm cov ntsiab lus xeem. Qhov no qhia tau hais tias kev txuas ntxiv ntawm cov dej ntws tam sim no hauv lub kaw lus kaw. Nws qhia tias infinity thaum tsis muaj kev sib txuas hauv Circuit Court uas zoo li nyob rau hauv ib qho qhib Circuit Court.

Ib yam li ntawd, nws txhais li cas rau Ohm ib yam dab tsi tawm? “Ohming tawm lub cev muaj zog yog cov txheej txheem ntawm kev ntsuas hluav taws xob tsis kam ntawm lub cev muaj zog windings thiab sib piv qhov ntawd tsis kam mus rau qhov muaj nuj nqis.

Qhov thib ob, ohmmeter ntsuas qhov tsis kam ua li cas?

Hom ntawm ohmmeter Thiab cov analogue ohmmeter displaces tus nqi los ntawm ib tug tsiv xav tau ntawm ib tug cim scale. Thaum qhov tam sim no dhau los ntawm lub Circuit Court yog siab tshaj plaws nrog rau qhov input voltage, lub tsis kam tau hais tias tsawg kawg, raws li txoj cai ohms.

Kev nyeem ntawv txuas ntxiv zoo yog dab tsi?

puv Kev txuas ntxiv - luv luv Circuit Court 'meter' yog displaying 0.2 ohms, residual kuj ntawm nws cov kev xeem coj. Yuav luag txhua lub hom phiaj hauv tsev, ib qho nyeem ntawv tsawg dua 1.0 ohms yog tsawg txaus los txiav txim siab zoo conductivity. Qhov no yog dab tsi ib tug cia siab yuav nrhiav tau nyob rau hauv hluav taws xob thaiv hluav taws xob.

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