Impedance txuas ntxiv lub tswv yim ntawm kev tsis kam mus rau alternating tam sim no (AC) circuits, thiab muaj ob qhov loj thiab theem, tsis zoo li tsis kam, uas tsuas muaj qhov loj. Impedance yog tus lej complex, nrog tib units raws li qhov tsis kam, uas SI unit yog ohm (Ω).
Dab tsi yog qhov txawv ntawm qhov ua haujlwm thiab impedance?
Qhov sib txawv tseem ceeb ntawm Resistance thiab Impedance yog resistance tawm tsam qhov ntws ntawm DC & AC tam sim no hos Impedance tsuas yog tawm tsam qhov ntws ntawm AC tam sim no. Impedance tsuas muaj lub ntsiab lus hauv AC Circuit Court xwb.
Puas yog impedance qhov ntxeev ntawm qhov tsis kam?
Impedance yog ib lub ntsiab lus dav dav rau kev tawm tsam uas kuj suav nrog cov tshuaj tiv thaiv. Hauv lwm lo lus, kev tawm tsam yog qhov kev tawm tsam rau cov hluav taws xob tsis tu ncua. … Reactance, txawm li cas los xij, yog ib qho kev ntsuas ntawm hom kev tawm tsam rau AC hluav taws xob vim muaj peev xwm lossis inductance.
Puas AC kuj zoo ib yam li impedance?
Phase Relationship
Ib lo lus, hauv AC Circuit Court hluav taws xob tiv thaiv hu ua "Impedance". … Yog li thaum siv cov resistors hauv AC circuits lub sij hawm Impedance, cim Z yog feem ntau siv los txhais tau tias nws tsis kam. Yog li ntawd, peb tuaj yeem hais kom raug rau qhov resistor, DC tsis kam=AC impedance, lossis R=Z.
Puas yog ohm tib yam li kev tawm tsam?
Resistance yog ib qho kev ntsuas ntawm kev tawm tsam rau tam sim no ntws hauv hluav taws xob circuit. Kev tiv thaiv yog ntsuas hauv ohms, cim los ntawm Greek tsab ntawv omega (Ω). Ohms muaj npe tom qab Georg Simon Ohm (1784-1854), German physicist uas kawm txog kev sib raug zoo ntawm voltage, tam sim no thiab tsis kam.
