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 Flybackthiransifoma kusintha magetsizikutanthauza kuti pamene koyilo yoyamba ya thiransifoma ikukondwera ndi magetsi a magetsi a DC, koyilo yachiwiri ya thiransifomayo siipereka mphamvu zopangira katundu, koma pokhapokha mphamvu yowonjezereka ya koyilo yoyamba ya transformer yazimitsidwa.Kupereka mphamvu linanena bungwe, mtundu wa thiransifoma kusintha magetsi amatchedwa flyback kusintha magetsi.

Mfundo yogwiritsira ntchito flyback power switch: njira zopitirira komanso zosiya za flybackmagetsitchulani momwe transformer imagwirira ntchito.M'malo odzaza kwathunthu, thiransifoma imagwira ntchito mwanjira yomwe mphamvu imasamutsidwa kwathunthu kapena kusamutsidwa mosakwanira.Kawirikawiri, mapangidwewo ayenera kutengera malo ogwira ntchito.Ochiritsira flyback magetsi magetsi ayenera ntchito mode mosalekeza, kotero kuti kusintha chubu ndi zotayika dera ndi pang'ono, ndi kupsyinjika ntchito athandizira ndi linanena bungwe capacitors akhoza kuchepetsedwa, koma pali zina.Izi ziyenera kuwonetsedwa apa: chifukwa cha mawonekedwe a magetsi a flyback, ndi oyeneranso kuti apangidwe ngati magetsi apamwamba kwambiri, ndipo thiransifoma yamagetsi yamagetsi imagwira ntchito mosalekeza.Ndikumvetsetsa kuti kutulutsa kwamagetsi okwera kwambiri kumafuna kugwiritsa ntchito ma diode owongolera ma voltage apamwamba.Chifukwa cha mawonekedwe akupanga, ma diode apamwamba osinthira ma voliyumu amakhala ndi nthawi yayitali yobwezeretsanso komanso kuthamanga kochepa.Munthawi yopitilira apo, diode imachira pakakhala kukondera kutsogolo.Kutayika kwa mphamvu panthawi yobwezeretsanso kumakhala kwakukulu kwambiri, zomwe sizikugwirizana ndi ntchito ya converter.Kusintha kwa chubu cha rectifier kumachepetsa kutembenuka, kutenthetsa kwambiri chubu chowongolera komanso kuwotcha chubu chowongolera.Popeza mu discontinuous mode, diode imasinthidwa-yokondera pansi pa zero bias, kutayika kumatha kuchepetsedwa mpaka kutsika kwambiri.Choncho, magetsi apamwamba kwambiri amagwira ntchito mosalekeza, ndipo maulendo ogwiritsira ntchito sangakhale okwera kwambiri.Palinso mtundu wamagetsi a flyback omwe amagwira ntchito m'malo ovuta.Nthawi zambiri, mtundu uwu wamagetsi umagwira ntchito pafupipafupi modulation mode kapena maulendo apawiri ndi m'lifupi modulation mode.Zida zamagetsi zotsika mtengo (rcc) nthawi zambiri zimagwiritsa ntchito fomuyi.Pofuna kuonetsetsa kutulutsa kokhazikika, ma transfoma Mafupipafupi ogwiritsira ntchito amasintha ndi mphamvu yamagetsi kapena magetsi.Transformer nthawi zonse imakhalabe pakati pa nthawi zonse ndi yapakati pamene ili pafupi ndi katundu wathunthu.Mphamvu yamtunduwu ndiyoyenera kutulutsa mphamvu zochepa, apo ayi mawonekedwe amagetsi amagetsi amakhala ovuta kwambiri.


Nthawi yotumiza: Nov-25-2021