Yuav ua li cas resonance currents

Thaum kawm txog cov qauv hauv ntawm Hluav taws xob cov ntawm ib theem tas ntshai resonance currents thiab voltages. Cov phenomena yog xam qhovkev nyob rau hauv circuits AC thiab yuav tsum yog undesirable tau lawv mus rau hauv tus account nyob rau hauv lub simulation thiab lub hwj chim switching circuits thiab pab tau.

Piv txwv li, lub resonance nyob rau hauv lub AC Circuit Court yog feem ntau siv nyob rau hauv xov tooj cua: tuned oscillation Circuit Court raws li ib tug resonance voltage, nws tso cai rau ob peb lub sij hawm mus ua kom nrov loj uas tsis muaj zog cov xov tooj cua teeb liab, txij li thaum vim transformation "capacitance-inductance" yog ib tug kev loj hlob zoo kev nyuaj siab qhov tseem ceeb.

Hais tias oscillation Circuit Court - yog lub hauv paus rau kev to taub yuav ua li cas lub resonance tam sim no thiab (los yog) kev nyuaj siab. Nws yog ib tug raug kaw hluav taws xob Circuit Court muaj ib tug capacitor kev cob cog rua nyob rau hauv thaum uas tig mus (C tank) thiab ib tug kauj (inductance L). Nyob rau hauv lawv los ntawm tus txheej txheem ntawm "siv" lub zog ntawm lub capacitance ntawm lub electric teb nyob rau hauv lub magnetic teb muaj self-extinguishing inductance (vim lub xub ntiag ntawm lub resistive tivthaiv R) hloov mus hloov los ntawm ib tug tej zaus.

Nyob rau hauv resonant hom Circuit Court kam mus rau lub tso cai ntawm lub tam sim no active tivthaiv sawv cev los ntawm R. Muaj tsuas yog resonance tam sim no thiab cov resonance voltage. Xav txog lawv nta.

Resonance tam sim no tshwm sim nyob rau hauv lub Circuit Court nyob rau hauv thaum uas tig mus nrog cov switched capacitor thiab lub kauj, uas kev raug xaiv yog li ntawd tam sim no ntawm C thiab L yog tam sim no. Raws li ib tug tshwm sim ntawm «CL» nqi ntawm cov tam sim no nyob rau hauv lub Circuit Court yog siab tshaj ib tug tag nrho cov saw.

Lub hauv paus ntsiab lus ntawm cov lag luam yog raws li nram no: ntawm lub hwj chim li, tus nqi txuam nrog condenser (mus rau ib tug me me mov voltage). Tom qab no nws yog txaus los disconnect lub hauv paus thiab ua kom tiav rau hauv Circuit Court rau hauv Circuit Court yuav pib cov txheej txheem ntawm paug rau lub kauj. Tus tam sim no dhau los ntawm nws generates ib tug sib nqus teb thiab generates nws tus kheej-induction electromotive quab yuam, oppositely qhia tam sim no. Nws nqi siab tshaj plaws yog txog thaum lub sij hawm ntawm tiav paug ntawm cov capacitor. Raws li, qhov no txhais tau tias tag nrho cov muaj peev xwm ntawm lub zog sau nyob rau hauv magnetic teb no yog hloov inductance. Txawm li cas los, vim rau nws tus kheej-induction kauj suab ntawm them hais yog lawm.

Txij li thaum lub counterflow los ntawm cov capacitor yog tsis muaj ntau (nws yog sab sab), nws pib tshwm sim sam, tab sis nrog ib tug txawv polarity. Raws li ib tug tshwm sim, tag nrho cov teb kauj yog hloov dua siab tshiab los them tus capacitor thiab cov txheej txheem repeats. Vim muaj cov hauv resistive tivthaiv R yuav siv sij hawm qhov chaw maj fading hloov mus hloov los. Yog li, tam sim no resonance yog ua.

Resonance kev nyuaj siab tshwm sim nyob rau hauv lub series kev twb kev txuas ntawm resistor R, ib tug kauj L thiab ib tug capacitor C. Ib qho tseem ceeb feature yog qhov tseeb hais tias lub hwj huam mov voltage yog qis dua lub capacitor thiab cov kauj (nyob rau txhua lub caij nyias), tab sis sib npaug zos tam sim no yog tswj. Ntxiv mus, lub voltage thiab tam sim no yog nyob rau hauv theem. Lub ntsiab mob rau lub rov tshwm sim thiab txij nkawm ntawm txoj kev no - lub koob pheej ntawm lawv ntawm inductive thiab capacitive reactance. Raws li, qhov impedance yog pom tias yuav kom nquag plias.

Yuav kom txiav txim seb qhov zoo qhov tseem ceeb ntawm voltage thoob plaws lub kauj thiab capacitor yog siv Ohm txoj kev cai. Nyob rau hauv rooj plaub no nws yog sib npaug zos rau cov khoom ntawm lub kauj tam sim no rau cov inductive reactance (U1 = IX1). Raws li, qhov tam sim no rau cov capacitor yuav tsum tau khoo los ntawm lub capacitance (U2 = IX2). Txij li thaum nyob rau hauv series kev twb kev txuas cov ntsiab ntawm cov tam sim no yog, thiab rau resonance X 1 = X 2 voltage thoob plaws lub inductance thiab capacitance yog muaj sib npaug. Li no, ua lub reactive Cheebtsam, koj yuav cuag ib tug tseem ceeb nce nyob rau hauv voltage U1 thiab U2, thaum tswj qhov tseem ceeb ntawm cov EMF qhov chaw. Lub ntsiab cheeb tsam ntawm daim ntawv thov - ib tug xov tooj cua engineering.