Output resistance index ntawm tswj fais fab mov
Quality Performance index ntawm tswj fais fab mov
Cov zis voltage Uo ntawm lub voltage regulator Circuit Court yuav raug cuam tshuam los ntawm peb yam: lub input voltage UI, load tam sim no Io thiab ambient kub T, uas yog
Uo=f(UI,Io,T)
Yog li ntawd, qhov kev qhia dav dav ntawm qhov kev hloov pauv ntawm qhov tso zis hluav taws xob ntawm cov khoom siv hluav taws xob tswj tau tuaj yeem raug kaw ua Uo=f(UI, Io, T)
Nws tuaj yeem pom tias plaub lub ntsiab lus qhia txog qhov zoo ntawm DC tswj fais fab mov yog Su, Ro, ST, thiab Ur. Cov hauv qab no tau piav qhia raws li hauv qab no:
(1) Kev hloov pauv cov lus qhia thiab kev tswj cov coefficients
Peb hu rau qhov piv ntawm qhov kev hloov pauv hauv rectified thiab filtered input voltage rau qhov kev hloov ntawm cov zis voltage tshwm sim los ntawm nws raws li qhov input voltage regulation factor. Qhov tseeb, qhov sib piv ntawm qhov sib txawv ntawm qhov sib txawv ntawm qhov tso zis hluav taws xob rau cov khoom siv hluav taws xob feem ntau yog siv los ua tus yam ntxwv ntawm kev tswj hwm qhov hluav taws xob ntawm lub zog hluav taws xob, uas yog hu ua voltage regulation coefficient. los ntawm txhais tau tias sau li los yog
(2) Cov zis tsis kam
Nyob rau hauv cov ntaub ntawv ntawm qhov input voltage thiab kub, qhov piv ntawm cov zis voltage hloov mus rau lub load tam sim no hloov yog txhais raws li cov zis tsis kam, denoted li.
Cov cim tsis zoo hauv cov qauv txhais tau hais tias ΔUo thiab ΔIo hloov pauv mus rau qhov sib txawv.
(3) Kub coefficient
Nyob rau hauv cov ntaub ntawv ntawm qhov input voltage thiab load Circuit Court, qhov tso zis voltage hloov los ntawm chav tsev kub hloov yog qhov kub coefficient los yog kub drift ntawm cov tswj fais fab mov, uas yog kaw cia li.
(4) Ripple voltage
Nyob rau hauv cov ntaub ntawv ntawm kev khiav hauj lwm tam sim no, AC tivthaiv tus nqi nyob rau hauv cov zis voltage ua lub ripple voltage. Lub cim ntawm qhov muaj txiaj ntsig zoo ntawm qhov hluav taws xob ripple yog Ur, thiab UIr tuaj yeem suav tias yog qhov hloov pauv ntawm cov khoom siv hluav taws xob. Obviously, voltage regulator Circuit Court nws tus kheej yuav suppress no variation. Yog li Ur≈SuUIr
Qee lub sij hawm tus ripple rejection piv feem ntau yog siv los piav txog qhov loj ntawm qhov hluav taws xob ripple, uas tau sau ua 20lg (UIr / Ur) (dB). Obviously, qhov loj dua qhov ripple rejection ratio, qhov zoo dua.
Rau ib tug high-kev ua tau zoo voltage regulator Circuit Court, qhov me me cov saum toj no-hais qhia plaub, qhov zoo dua.
