Outpvut kuj ntsuas rau siv nrog cov khoom siv fais fab
Quality Indicators of Voltage Regulated Power Supplies
Cov zis voltage Uo ntawm lub voltage regulator Circuit Court yuav raug cuam tshuam los ntawm peb yam, uas yog, lub input voltage UI, lub load tam sim no Io thiab lub ambient kub T, piv txwv li.
Uo=f (UI, Io, T)
Yog li ntawd, cov lus qhia dav dav rau qhov hloov pauv ntawm qhov tso zis hluav taws xob ntawm cov khoom siv hluav taws xob tswj tau tuaj yeem sau 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, Ur. Cov hauv qab no tau piav raws li hauv qab no:
(1) Kev hloov pauv hloov pauv hloov pauv thiab qhov ntsuas hluav taws xob
Peb yuav kho qhov hloov pauv hloov pauv hloov pauv hloov pauv hloov pauv hloov pauv hloov pauv hloov pauv hloov pauv hloov pauv hloov pauv, hu ua input voltage regulation factor. Qhov tseeb, qhov sib piv ntawm cov txheeb ze hloov pauv hauv cov zis hluav taws xob thiab cov khoom siv hluav taws xob feem ntau yog siv los ua tus yam ntxwv ntawm kev tswj hwm kev ua haujlwm ntawm lub zog hluav taws xob, uas yog hu ua qhov kev tswj hwm qhov hluav taws xob.
(2) Tso zis tsis kam
Raws li qhov xwm txheej ntawm qhov hluav taws xob tsis tu ncua thiab qhov kub thiab txias, qhov sib piv ntawm cov zis hluav taws xob hloov pauv thiab thauj khoom tam sim no hloov pauv tau txhais tau tias yog cov zis tsis kam, uas tau sau tseg.
Qhov kos npe tsis zoo hauv cov qauv qhia tias ΔUo hloov pauv mus rau ΔIo.
(3) Kub coefficient
Nyob rau hauv cov ntaub ntawv ntawm input voltage thiab load Circuit Court tsis hloov, lub chav tsev kub hloov los ntawm qhov tso zis voltage hloov yog qhov kub coefficient ntawm cov tswj fais fab mov los yog kub drift, kaw raws li
(4) Ripple voltage
Nyob rau hauv cov ntaub ntawv ntawm qhov ntsuas kev khiav hauj lwm tam sim no, tus nqi ntawm AC tivthaiv ntawm cov zis voltage dhau los ua qhov ripple voltage. Lub cim rau tus nqi rms 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 suppresses tus nqi ntawm variation. Yog li Ur≈SuUIr
Qee lub sij hawm kuj feem ntau siv ripple suppression piv los piav qhia qhov loj ntawm ripple voltage, sau 20lg (UIr / Ur) (dB), nws yog qhov tseeb tias qhov loj dua qhov ripple suppression ratio zoo dua.
Rau qhov kev ua haujlwm siab voltage regulator Circuit Court, plaub qhov ntsuas tau piav qhia saum toj no, qhov me dua qhov zoo dua.
