Yuav ua li cas tshem tawm cov ripple thiab suab nrov ntawm kev hloov hluav taws xob thiab txhim kho kev ruaj ntseg ntawm kev hloov hluav taws xob?
Kev khiav hauj lwm zaus ntawm lub zog hloov hluav taws xob yog qhov siab, feem ntau kaum ntawm KHz, yog li lub ripple thiab suab nrov yuav loj dua rau cov khoom siv hluav taws xob ntau zaus. Peb tuaj yeem tsim qhov tsim nyog lim Circuit Court kom txo tau cov ripple thiab suab nrov. Circuit Court kom txo ripple thiab suab nrov Tsim nyog lim capacitors tuaj yeem txo qhov ripple thiab suab nrov ntawm kev hloov hluav taws xob. Nyob rau hauv high zaus hloov fais fab mov, lub capacitance ntawm lub lim capacitor tsis loj npaum li qhov ua tau. Yuav tsum xav txog qhov capacitance impedance thiab zaus yam ntxwv. Lub capacitor yuav tsum muaj qis sib npaug impedance kom muaj kev lim dej zoo. Vim tias qhov zaus ntawm cov khoom siv hluav taws xob nce, tus nqi capacitance yuav poob qis, yog li thaum xaiv lub lim capacitor peb yuav tsum xav txog ESR (Sib npaug Series Resistance). Sim siv lub lim capacitor nrog tus nqi ESR me me.
The size of the capacitance value can be referred to the previous formula: C>0.289/{fx(U/I) x ACv}.
ACv yog ripple yam hauv %.
Ntxiv inductor lim tuaj yeem txo qhov ripple thiab suab nrov ntawm kev hloov hluav taws xob.
Inductors tuaj yeem cais AC thiab dhau DC, yog li peb tuaj yeem siv inductors los lim thiab txo cov ripple thiab suab nrov ntawm kev hloov hluav taws xob.
Thaum siv inductive filtering, peb yuav tsum tau them sai sai rau lub zog ntawm inductor.
Hloov cov khoom siv hluav taws xob feem ntau siv LC lim.
Txhawm rau kom ua tiav cov nyhuv lim dej zoo dua, feem ntau siv kev sib xyaw ua ke ntawm LC filtering, qee qhov hloov hluav taws xob hloov hluav taws xob yuav raug ntxiv rau dipole filtering, uas yog, ntxiv rau lwm qib ntawm LC filtering circuit. Ntxiv LDO (tsawg dropout linear regulator) filtering yuav txo tau lub ripple thiab suab nrov ntawm lub switching fais fab mov LDO (tsawg dropout linear regulator) muaj ib tug suab nrov rejection piv ntawm LDO (LDO) muaj suab nrov rejection piv. Yog li ntxiv qhov qis qis qis tawm regulator yog txoj hauv kev zoo tshaj plaws los txo cov ripple thiab suab nrov ntawm kev hloov hluav taws xob. Tab sis tus nqi thiab kev siv hluav taws xob yuav nce ntxiv.
