Resistance vs Capacitance
Lub peev xwm thiab qhov tsis kam yog ob lub ntsiab lus tseem ceeb tshaj plaws hauv hluav taws xob. Ob lub tswv yim no ua lub luag haujlwm tseem ceeb hauv yuav luag txhua yam khoom siv hluav taws xob uas peb siv niaj hnub no. Nws yog qhov muaj txiaj ntsig tshwj xeeb kom muaj kev nkag siab meej hauv cov ncauj lus no. Kab lus no yuav tham txog qhov sib txawv thiab qhov zoo sib xws ntawm ob lub ntsiab lus no.
Txhob Cia Siab
Kev tiv thaiv yog ib qho cuab yeej tseem ceeb hauv kev lag luam hluav taws xob thiab hluav taws xob. Qhov kev tawm tsam 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 ntawm ib tus neeg xyuas pib nyob ntawm tus nqi ntawm cov hluav taws xob dawb 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 ntsuas kub, 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.
Nyob zoo
Lub peev xwm ntawm ib qho khoom yog qhov ntsuas ntawm tus nqi ntawm cov khoom uas tuaj yeem tuav tsis tau tawm. Capacitance yog ib qho khoom tseem ceeb hauv ob qho tib si electronics thiab electromagnetism. Capacitance kuj txhais tau tias yog lub peev xwm khaws lub zog hauv qhov hluav taws xob. Rau lub capacitor uas muaj qhov sib txawv V voltage hla cov nodes, thiab qhov siab tshaj plaws ntawm cov nqi uas tuaj yeem khaws cia hauv qhov system yog Q, lub peev xwm ntawm lub kaw lus yog Q / V, thaum txhua qhov ntsuas hauv SI units. Chav tsev ntawm capacitance yog farad (F). Txawm li cas los xij, nws tsis yooj yim siv xws li chav tsev loj. Yog li ntawd, feem ntau ntawm cov nqi capacitance yog ntsuas nyob rau hauv nF, pF, µF thiab mF ranges.
Lub zog khaws cia hauv lub capacitor yog sib npaug (QV2)/2. Lub zog no yog sib npaug rau kev ua haujlwm ntawm txhua tus nqi los ntawm qhov system summed. Lub capacitance ntawm lub kaw lus nyob ntawm thaj tsam ntawm daim phiaj capacitor, qhov kev ncua deb ntawm cov phaj capacitor thiab nruab nrab ntawm cov phaj capacitor. Lub capacitance ntawm ib qho system tuaj yeem nce los ntawm kev nce thaj tsam, lossis txo qhov sib txawv, lossis muaj qhov nruab nrab nrog ntau dua dielectric permittivity.
Qhov txawv ntawm Resistance thiab Capacitance yog dab tsi?
• Resistance yog tus nqi ntawm cov khoom nws tus kheej thaum capacitance yog tus nqi ntawm kev sib xyaw ntawm cov khoom.
• Resistance nyob ntawm qhov kub thiab txias thaum capacitance tsis.
• Resistors coj zoo ib yam li AC thiab DC tab sis capacitors ua ob yam sib txawv.
