Txhais thiab ua hauj lwm hauv paus ntsiab lus ntawm switching fais fab mov
Switching fais fab mov yog siv los ntawm Circuit Court tswj switching raj rau high-ceev conduction thiab txiav tawm. DC rau high-frequency alternating tam sim no muab rau lub transformer rau transformer, yog li tsim ib tug yuav tsum tau ib los yog ntau pawg ntawm voltage fais fab mov.
Switching fais fab mov muaj xws li cov hauv qab no:
Lub ntsiab Circuit Court los ntawm AC grid input, DC tso zis ntawm tag nrho cov txheej txheem, suav nrog:
1, input lim: nws lub luag hauj lwm yog lim cov stray vuag tam sim no nyob rau hauv lub hwj chim daim phiaj, tab sis kuj impede lub tshuab generated los ntawm stray vuag tawm tswv yim rau pej xeem lub hwj chim daim phiaj.
2, rectification thiab filtering: daim phiaj AC fais fab mov ncaj qha rectified rau hauv lub zog DC smoother rau kev hloov dua siab tshiab.
3, inverter: rectified DC rau hauv high-frequency alternating tam sim no, uas yog ib feem ntawm lub high-frequency switching fais fab mov, qhov ntau dua qhov zaus, ntim, hnyav thiab tso zis zog piv yog me me.
4, tso zis rectification thiab filtering: raws li lub load xav tau, muab ib tug ruaj khov thiab txhim khu kev qha DC fais fab mov.
Tswj Circuit Court ntawm ib sab, ua piv txwv los ntawm cov zis, los ntawm kev sib piv nrog cov txheej txheem teeb tsa, thiab tom qab ntawd mus tswj lub inverter, hloov nws zaus los yog mem tes dav, kom ua tiav cov zis ruaj khov.
Peb tej yam kev mob ntawm switching fais fab mov
1, kev hloov pauv: hluav taws xob hluav taws xob ua haujlwm hauv lub xeev hloov pauv tsis yog lub xeev linear
2, high-frequency: lub hwj chim electronics ua hauj lwm ntawm high frequencies es tsis ze rau qhov tsawg zaus ntawm industrial zaus
3, DC: hloov lub zog tso zis yog DC es tsis yog AC
Lub hauv paus ntsiab lus ua haujlwm ntawm kev hloov hluav taws xob
Niaj hnub no, feem ntau cov khoom siv hluav taws xob siv hluav taws xob hloov pauv hloov hluav taws xob. Txawm hais tias lub zog hloov hluav taws xob muaj cov yam ntxwv ntawm qhov me me, kev ua haujlwm siab, kev tswj hluav taws xob zoo, thiab lwm yam, tab sis vim tias lub zog hloov hluav taws xob tau txuas ncaj qha mus rau cov khoom siv hluav taws xob, kev hloov hluav taws xob hluav taws xob thiab hluav taws xob yuav ua rau muaj kev puas tsuaj rau lub zog hloov hluav taws xob. . Kev hloov hluav taws xob hluav taws xob hluav taws xob yog qhov nyuaj dua, ntau tus neeg nyiam ntawm lub zog hluav taws xob puas tsuaj ntawm lawv qhov kawg wits, qhov tseeb, tsuav yog peb muaj qee qhov kev nkag siab ntawm nws, kev saib xyuas tsis yooj yim.
Lub hauv paus ntsiab lus ntawm kev hloov hluav taws xob yog qhov zoo ib yam, ntawm no, peb HP3748 lub tshuab luam ntawv txhawb nqa lub zog hloov hluav taws xob tsis muaj qhov hluav taws xob tso tawm raws li piv txwv, los piav qhia lub hauv paus ntsiab lus ntawm kev ua haujlwm ntawm kev hloov hluav taws xob thiab kev kuaj xyuas kev txhaum.
To taub lub hauv paus ntsiab lus ntawm kev ua haujlwm
Yog tias peb xav kawm los daws qhov teeb meem ntawm kev hloov pauv hluav taws xob, peb yuav tsum muaj kev nkag siab txog nws txoj cai ntawm kev ua haujlwm thiab cov khoom puas raug puas tsuaj. Thaum qhov hluav taws xob hluav taws xob tawm tswv yim los ntawm sab tswv yim, thawj zaug mus txog lub capacitor thiab inductor muaj li ntawm L-hom lossis π-hom lim Circuit Court rau lim, txhawm rau tshem tawm cov hluav taws xob hluav taws xob hluav taws xob thiab cuam tshuam, txhim kho cov khoom siv hluav taws xob zoo. . Nyob rau tib lub sijhawm, cov khoom siv hluav taws xob kuj tseem txuas nrog hauv cov fuse, thaum lub zog hluav taws xob tsis ua haujlwm luv luv, lub fuse fuse kom tsis txhob nthuav dav ntawm qhov txhaum. Thiab, tam sim no feem ntau ntawm cov hloov hluav taws xob muab tswv yim thiab varistor. Qhov no resistor thaum qhov voltage yog li qub, tus nqi kuj yog infinite, tsis cuam tshuam rau kev ua hauj lwm ntawm Circuit Court. Thaum qhov hluav taws xob siab dhau lawm, lub varistor yuav luv luv, kom qhov tam sim no los ntawm lub fuse nce, lub fuse fuse, kom tsis txhob muaj kev puas tsuaj rau lwm yam khoom vim muaj hluav taws xob siab.
Tom qab lim cov AC fais fab los ntawm lub diode choj rectifier Circuit Court thiab high-voltage loj-muaj peev xwm capacitor filtering, generating 300V high-voltage DC voltage, tom qab qhov voltage los ntawm resistor kauj ruam-down thiab ib tug yooj yim voltage regulator rau hauv oscillation tswj Circuit Court los tsim. oscillation signals, generated los ntawm lub oscillation teeb liab los ntawm lub hwj chim mov oscillator raj amplified nrog ib tug high-frequency transformer, nws yuav hloov mus rau hauv ib tug tsawg-voltage alternating tam sim no voltage, tsawg-voltage alternating tam sim no voltage thiab ces ib tug rectifier lim tom qab rectification thiab lim. , qhov tsis tshua muaj hluav taws xob AC voltage tuaj yeem hloov mus rau qhov tsis tshua muaj hluav taws xob DC voltage uas tuaj yeem siv los ntawm ntau yam khoom siv. Nyob rau hauv tas li ntawd, nyob rau hauv lub ntsiab voltage tso zis, kuj muaj ib tug voltage sampling tawm tswv yim circuit, tam sim no voltage tawm tswv yim rov qab mus rau lub oscillation tswj Circuit Court, ib zaug lub ntsiab voltage vim load hloov thiab voltage drift, lub oscillation tswj Circuit Court yuav hloov lub oscillation mem tes. dav los xyuas kom meej stability ntawm cov zis voltage. Nyob rau tib lub sijhawm, thaum lub sijhawm thauj khoom luv luv, cov qauv qhia tawm tswv yim tseem yuav ceeb toom rau lub oscillation tswj Circuit Court nyob rau lub sijhawm kom tsis txhob tso tawm ntawm qhov hluav taws xob, kom tsis txhob muaj hluav taws xob los ntawm kev puas tsuaj vim overload.
