Circuits nrog L thiab C cov ntsiab lus muaj cov yam ntxwv tshwj xeeb vim lawv cov yam ntxwv zaus (xws li zaus Vs, tam sim no, voltage, thiab impedance), uas tej zaum yuav muaj qhov tsawg kawg nkaus lossis siab tshaj qhov tseem ceeb ntawm cov zaus tshwj xeeb. Cov kev siv ntawm cov circuits no feem ntau yog cov transmitters, xov tooj cua receivers, thiab TV receivers. Xav txog ib qho LC Circuit Court uas cov capacitors thiab inductors txuas nrog hauv cov khoom siv hluav taws xob, thiab kev sib txuas ntawm Circuit Court muaj qhov tshwj xeeb ntawm resonance ntawm lub zaus zaus hu ua resonant zaus. Kab lus no tham txog dab tsi LC Circuit Court yog, thiab kev ua haujlwm sib haum xeeb ntawm cov kab yooj yim thiab cov kab sib txuas LC.
LC Circuit Court yog dab tsi?
LC Circuit Court, tseem hu ua lub zog cia Circuit Court, tuning circuit lossis resonant circuit, yog ib lub voj voog uas muaj cov inductor kos rau hauv lub capacitor uas sawv cev los ntawm tsab ntawv "C" thiab txuas ua ke los ntawm tsab ntawv "L". Cov circuits no yog siv los tsim cov teeb liab ntawm cov frequencies tshwj xeeb lossis tau txais cov teeb liab los ntawm cov teeb liab sib xyaw ntawm cov zaus tshwj xeeb. LC Circuit Court yog cov khoom siv hluav taws xob yooj yim hauv ntau yam khoom siv hluav taws xob, tshwj xeeb tshaj yog nyob rau hauv cov khoom siv wireless xws li tuners, lim, mixers thiab oscillators. Lub luag haujlwm tseem ceeb ntawm LC Circuit Court feem ntau yog oscillate nrog tsawg damping.
Series LC Circuit Court resonance
Hauv ibseries resonantLC Circuit Court configuration, capacitor "C" thiab inductor "L" yog ob qho tib si txuas rau hauv series, raws li qhia hauv Circuit Court hauv qab no. Qhov sib npaug ntawm cov voltages thoob plaws lub capacitor thiab inductor yog cov lej ntawm tag nrho cov voltages thoob plaws qhov qhib Circuit Court terminals. Tam sim no nyob rau hauv LC Circuit Court + Ve davhlau ya nyob twg yog sib npaug rau tam sim no los ntawm inductor (L) thiab capacitor (C) v=v L+v C, i=i L=i C
Thaum lub amplitude ntawm "XL" induced reactance nce, qhov zaus kuj nce. Ib yam li ntawd, thaum tus nqi reactance ntawm "XC" capacitor txo, qhov zaus kuj txo.
Series LC Circuit Court resonance
Ntawm ib qho zaus, ob lub reactances XL thiab XC muaj tib qhov loj tab sis cov cim qhia tawm, yog li ntawd, qhov zaus no hu ua resonant zaus, sawv cev los ntawm LC circuit.
Yog li ntawd, nyob rau hauv resonance
X L = -X C
ωL= 1 /ωC
ω=ω0= 1 /√LC
Qhov no yog hu ua resonant angular zaus ntawm Circuit Court. Hloov angular zaus rau zaus siv cov qauv hauv qab no
f0 =ω0/2π√LC
Hauv ibseries resonantLC circuit configuration, ob lub resonances XC thiab XL tshem tawm ib leeg tawm. Hauv cov tswv yim es tsis yog cov khoom zoo tagnrho, qhov ntws ntawm tam sim no feem ntau yog rov qab rau qhov tsis kam ntawm coil winding. Yog li ntawd, tam sim no muab rau lub Circuit Court yog siab tshaj thaum lub sij hawm resonance.
Lub ntsiab txhais ntawm lub txais Circuit Court yog tias thaum nyob rau hauv Lt f thiab f0 yog siab tshaj, lub impedance ntawm lub Circuit Court yog yam tsawg kawg nkaus.
Rau f
Rau f
Parallel LC Circuit Court resonance
Nyob rau hauv ib tug parallel LC Circuit Court configuration, capacitor "C" thiab inductor "L" txuas nyob rau hauv parallel, raws li qhia nyob rau hauv daim duab hauv qab no. Qhov sib npaug ntawm cov voltages thoob plaws lub capacitor thiab inductor yog cov lej ntawm tag nrho cov voltages thoob plaws qhov qhib Circuit Court terminals. Tam sim no nyob rau hauv LC Circuit Court + Ve davhlau ya nyob twg yog sib npaug zos rau tam sim no dhau los ntawm inductor (L) thiab capacitor (C)
v = v L = v C
I=IL + IC
Cia lub internal kuj ntawm lub kauj yog "R". Thaum ob lub resonances XC thiab XL tshwm sim, cov ceg reactive tam sim no yog tib yam thiab rov qab, yog li lawv tshem tawm ib leeg los muab qhov tsawg kawg nkaus tam sim no ntawm cov hlau tseem ceeb. Thaum tag nrho cov tam sim no raug txo qis hauv lub xeev no, tag nrho impedance yog maximized, thiab resonant zaus yog muab los ntawm cov kab zauv hauv qab no
f0 =ω0/2π= 1 /2π√LC
Nco ntsoov tias thaum lub sij hawm resonance, tam sim no ntawm ib ceg reactive tsis yog qhov tsawg kawg nkaus. Tab sis tam sim no ntawm txhua ceg reactive yog muab cais los ntawm kev cais cov reactive voltage "V" los ntawm reactive voltage "Z".
Parallel LC Circuit Court resonance
Yog li, raws li Ohm txoj cai, kuv=V/Z
Lub Circuit Court suppressor tuaj yeem txhais tau tias: thaum cov kab tam sim no yog qhov tsawg kawg nkaus thiab tag nrho impedance yog qhov siab tshaj plaws ntawm f0, lub Circuit Court yog inductive hauv qab f0, thiab capacitive saum f0.