Piav tsib yam ntxwv ntawm voltage stabilized fais fab mov
1. Kev siv hluav taws xob tsawg thiab kev ua haujlwm siab. Nyob rau hauv lub switching tswj fais fab mov Circuit Court, lub transistor V nyob rau hauv lub excitation teeb liab nyob rau hauv lub excitation, nws alternately ua hauj lwm nyob rau hauv lub on - txiav thiab txiav - nyob rau hauv lub xeev switching, lub conversion ceev ceev heev, feem ntau yog hais txog. 50kHz, nyob rau hauv qee lub teb chaws uas muaj kev tshaj lij, tuaj yeem ua tau ob peb puas lossis ze li 1,000kHz. Qhov no ua rau kev hloov pauv ntawm transistor V lub zog siv tsawg heev, qhov ua tau zoo ntawm cov khoom siv hluav taws xob tuaj yeem txhim kho tau zoo, nws cov txiaj ntsig tuaj yeem ncav cuag 80%.
2. Me me thiab lub teeb yuag. Los ntawm schematic block daim duab ntawm lub switching regulator fais fab mov tuaj yeem pom meej ntawm no yam tsis muaj kev siv ntau zaus transformer. Raws li qhov tshwm sim ntawm kev hloov lub raj V ntawm lub hwj chim dissipation yog heev txo, thiab tshem tawm qhov xav tau rau lub dab dej kub loj. Vim yog ob qho laj thawj no, yog li lub zog hloov hluav taws xob hloov hluav taws xob yog qhov me me thiab lub teeb hauv qhov hnyav.
3. Ntau yam ntawm kev tswj hluav taws xob. Cov zis hluav taws xob los ntawm kev hloov hluav taws xob tswj hluav taws xob yog tswj hwm los ntawm lub luag haujlwm ntawm lub voj voog ntawm cov teeb liab excitation, qhov kev hloov ntawm lub teeb liab input voltage yuav raug them los ntawm kev hloov kho zaus los yog nthuav dav, yog li ntawd nyob rau hauv kev lag luam zaus hluav taws xob voltage variations, nws tseem yog. muaj peev xwm los xyuas kom meej tias muaj qhov tso zis ntau zog. Yog li ntawd, qhov voltage stabilization ntau ntawm switching fais fab mov yog dav heev thiab qhov voltage stabilization nyhuv yog zoo heev. Tsis tas li ntawd, muaj ob txoj hauv kev los hloov lub luag haujlwm lub voj voog: pulse width modulation type thiab zaus modulation type. Nyob rau hauv txoj kev no, kev hloov hluav taws xob tswj hluav taws xob tsis yog tsuas yog muaj qhov zoo ntawm ntau qhov kev tswj hwm hluav taws xob, tab sis kuj tseem muaj ntau txoj hauv kev kom paub txog kev tswj hwm hluav taws xob, cov neeg tsim qauv tuaj yeem xaiv ntau hom kev hloov hluav taws xob tswj hluav taws xob raws li cov kev xav tau ntawm kev siv tswv yim.
4. Qhov ua tau zoo ntawm kev lim dej tau zoo heev, kom lub peev xwm thiab ntim ntawm lim capacitors txo qis heev. Hloov cov kev tswj fais fab kev khiav hauj lwm zaus yog qhov pib ua hauj lwm ntawm 50kHz, yog linear tswj fais fab mov 1000 zaug, uas ua rau lub rectifier filtering efficiency yuav luag nce los ntawm 1000 zaug. Yog kev siv ib nrab-yoj rectification nrog capacitor filtering, qhov ua tau zoo kuj nce 500b zaug. Nyob rau hauv tib lub ripple tso zis voltage, kev siv ntawm switching regulator fais fab mov, lub peev xwm ntawm lub lim capacitor tsuas yog linear regulator fais fab mov lim capacitance ntawm 1/500-1/1000.
5. Daim ntawv Circuit Court yog hloov tau. Piv txwv li, muaj kev txaus siab rau tus kheej thiab lwm yam excitation hom, muaj kev nthuav dav thiab ntau zaus hloov kho hom, ib leeg-kawg thiab ob-kawg, thiab lwm yam, tus tsim qauv tuaj yeem ua si ntau hom kev siv hluav taws xob hauv Circuit Court, tsim kom tau raws li cov kev siv sib txawv. ntawm switching tswj fais fab mov.
