Sib npaug vs Kev Ua Haujlwm Zoo
Resistance yog ib qho tseem ceeb heev ntawm cov hluav taws xob thiab hluav taws xob circuits. Lub tswv yim ntawm kev tiv thaiv ua lub luag haujlwm tseem ceeb hauv kev lag luam xws li hluav taws xob engineering, hluav taws xob engineering thiab physics. Nws yog ib qho tseem ceeb kom muaj kev nkag siab meej txog kev tawm tsam thiab lwm yam kev kawm kom ua tiav hauv cov haujlwm no. Hauv tsab xov xwm no, peb yuav tham txog qhov sib npaug ntawm kev tiv thaiv thiab kev ua haujlwm zoo li cas, lawv cov ntsiab lus, kev siv qhov sib npaug thiab kev ua haujlwm zoo, qhov zoo sib xws ntawm ob, thiab thaum kawg qhov sib txawv ntawm qhov sib npaug thiab kev ua haujlwm zoo.
Dab tsi yog qhov sib npaug?
Yuav kom nkag siab lub tswv yim ntawm kev sib npaug, ib tus yuav tsum xub nkag siab lub tswv yim ntawm kev tawm tsam. Qhov kev tiv thaiv, hauv cov ntsiab lus zoo, qhia peb tias nws nyuaj npaum li cas rau qhov hluav taws xob ntws. Hauv kev txiav txim siab ntau, qhov kev tawm tsam ntawm ob lub ntsiab lus tuaj yeem txhais tau tias yog qhov sib txawv ntawm qhov voltage uas yuav tsum tau coj ib chav tsev tam sim no hla ob lub ntsiab lus. Hluav taws xob tsis kam yog qhov hloov pauv ntawm hluav taws xob conduction. Qhov kev tiv thaiv ntawm ib qho khoom yog txhais tau tias yog qhov piv ntawm qhov hluav taws xob thoob plaws qhov khoom mus rau qhov tam sim no ntws los ntawm nws. Qhov kev tiv thaiv nyob rau hauv ib tug conductor nyob ntawm seb tus nqi ntawm cov dawb electrons nyob rau hauv nruab nrab. Qhov tsis kam ntawm ib qho semiconductor feem ntau yog nyob ntawm tus naj npawb ntawm doping atoms siv (impurity concentration). Qhov kev tawm tsam qhov system qhia rau qhov hloov pauv tam sim no txawv ntawm qhov ntawd mus rau qhov tam sim no ncaj qha. Yog li ntawd, lub sij hawm impedance yog qhia nyob rau hauv thiaj li yuav ua kom AC kuj xam tau yooj yim dua.. Ohm txoj cai yog ib txoj cai tseem ceeb tshaj plaws thaum lub ntsiab lus tsis kam tham. Nws hais tias rau qhov muab qhov kub thiab txias, qhov sib piv ntawm qhov hluav taws xob hla ob lub ntsiab lus, mus rau qhov tam sim no dhau los ntawm cov ntsiab lus yog tas li. Qhov no tsis tu ncua yog hu ua qhov tsis kam ntawm ob lub ntsiab lus. Qhov tsis kam yog ntsuas hauv Ohms. Qhov sib npaug ntawm qhov system yog tus nqi ntawm ib qho resistor uas tuaj yeem siv los ntawm kev sib xyaw ntawm cov resistors. Rau ib qho kev sib txuas ntawm cov resistors, qhov sib npaug yog qhov sib ntxiv ntawm cov resistors. Rau kev teeb tsa sib npaug, qhov sib npaug R tuaj yeem tau txais los ntawm 1 / R=1 / R 1 + 1 / R 2 +1 / R 3 ……
Kev Tiv Thaiv Zoo Li Cas?
Kev tiv thaiv zoo yog lwm lub npe muab rau lub sijhawm impedance. Kev ua haujlwm zoo yog txhais tau tias yog qhov tsis kam mus rau qhov hloov pauv tam sim no, qhia raws li qhov piv ntawm lub zog dissipated rau square ntawm qhov zoo tam sim no. Kev ua tau zoo kuj txawv nrog qhov zaus ntawm lub teeb liab. Rau cov khoom siv passive xws li cov resistors, qhov kev ua haujlwm zoo yog ib txwm nyob tas li. Rau cov khoom siv nquag xws li inductors thiab capacitors, kev ua haujlwm zoo yog qhov ua haujlwm ntawm qhov zaus.
Dab tsi yog qhov sib txawv ntawm qhov sib npaug thiab Kev Ua Haujlwm Zoo?
• Qhov sib npaug yog cov khoom muaj zog tiv taus, uas tsis hloov nrog lwm yam sib txawv. Kev tiv thaiv zoo yog lwm lub npe muab rau impedance.
• Impedance yog ib yam khoom, uas hloov nrog lub zaus ntawm lub teeb liab. Qhov sib npaug ntawm qhov tsis kam yog txhais rau cov txheej txheem ntawm cov resistors lossis cov khoom uas muaj kev tawm tsam nkaus xwb.
• Kev tiv thaiv zoo tuaj yeem txhais tau rau txhua feem ntawm lub voj voog.
