Hloov fais fab adapter puag
Sep 07, 2018| Dab tsi yog switching power supply?
Switching fais fab mov yog ib hom khoom siv hluav taws xob uas siv cov cuab yeej hluav taws xob niaj hnub siv hluav taws xob los tswj qhov piv ntawm lub sijhawm thaum lub qhov hloov pauv tau qhib thiab tawm, thiab tswj cov zis hluav taws xob ruaj khov. Lub zog hloov hluav taws xob feem ntau yog tsim los ntawm pulse width modulation (PWM) tswj IC thiab MOSFET.
Lub hauv paus ntsiab lus ua haujlwm ntawm kev hloov hluav taws xob yog dab tsi?
Kev siv hluav taws xob hloov hluav taws xob yog siv cov khoom siv hluav taws xob hloov hluav taws xob (xws li transistors, FETs, thyristors, thiab lwm yam), los ntawm kev tswj xyuas hluav taws xob, kom cov khoom siv hluav taws xob hloov mus tas li "on" thiab "tawm", kom cov khoom siv hluav taws xob hloov hluav taws xob. Lub input voltage yog pulse modulated kom ua tiav DC / AC, DC / DC voltage hloov dua siab tshiab, thiab adjustable tso zis voltage thiab nws pib tswj.
Hloov cov khoom siv hluav taws xob feem ntau muaj peb hom kev ua haujlwm: zaus, pulse width tsau hom, tsau zaus, hloov pauv mem tes dav hom, zaus, mem tes dav hloov pauv hom. Kev ua haujlwm qub feem ntau yog siv rau DC / AC inverter fais fab mov lossis DC / DC voltage hloov dua siab tshiab; ob hom kev ua haujlwm tom kawg no feem ntau yog siv rau kev hloov hluav taws xob tswj hluav taws xob. Tsis tas li ntawd, qhov hloov hluav taws xob hloov hluav taws xob tso zis hluav taws xob kuj muaj peb hom kev ua haujlwm: ncaj qha tso zis voltage hom, qhov nruab nrab cov zis voltage hom, thiab amplitude output voltage hom. Ib yam li ntawd, hom qub ntawm kev ua haujlwm feem ntau yog siv rau DC / AC inverter fais fab mov, lossis DC / DC voltage hloov dua siab tshiab; ob hom kev ua haujlwm tom kawg no feem ntau yog siv rau kev hloov hluav taws xob.
Cov lus piav qhia ntxaws txog kev hloov hluav taws xob hluav taws xob Circuit Court
Lub ntsiab Circuit Court
Tag nrho cov txheej txheem los ntawm AC grid input thiab DC tso zis, suav nrog:
1. Input filter: Nws muaj nuj nqi yog lim cov clutter uas twb muaj lawm nyob rau hauv daim phiaj fais fab, thiab tseem cuam tshuam cov clutter generated los ntawm lub tshuab tsis pub rov qab mus rau pej xeem lub hwj chim daim phiaj.
2. Rectification thiab filtering: AC fais fab mov ntawm daim phiaj hluav taws xob yog ncaj qha rectified mus rau lub zog DC smoother rau qib tom ntej ntawm kev hloov pauv.
3. Inverter: Lub zog DC rectified yog hloov mus rau hauv siab zaus AC zog, uas yog lub hauv paus tseem ceeb ntawm lub siab zaus hloov fais fab mov. Qhov ntau zaus, qhov me me ntawm qhov ntim, qhov hnyav thiab qhov tso zis zog.
4. Tso zis rectification thiab filtering: Muab ruaj khov thiab txhim khu kev qha DC fais fab mov raws li qhov yuav tsum tau ua.