Mtima wa gawo losinthira magetsi - switching transformer

Kusanthula kwa thiransifoma yosinthira ma frequency apamwamba kwambiri

Muzinthu zamagetsi zomwe timakumana nazo tsiku ndi tsiku, titha kupeza zambirimaginito pachimakezigawo, pakati pawo pali mtima wakusintha magetsimodule - ndikusintha kwa transformer. Masiku ano, zinthu zamagetsi m'moyo zimakhala ndi zofunika kwambiri kuti ziwonekere zazing'ono kwambiri komanso zowonda kwambiri. Monga mtima wa gwero lamphamvu lazinthu zamagetsi zamagetsi, magetsi osinthika othamanga kwambiri ali ndi ubwino wochita bwino kwambiri, kutentha kwabwino komanso kukula kochepa. Chifukwa chake, zinthu zambiri zamagetsi zimakhala ndi mphamvu zosinthira pafupipafupi. Monga akatswiri pamakampani opanga zamagetsi, muyenera kudziwa china chake chokhudza thiransifoma yamagetsi osinthira magetsi.

Transformer ndi chipangizo chomwe chimagwiritsa ntchito mfundo ya electromagnetic induction kusinthanitsa zamakono. Zigawo zake zazikulu zikuphatikizapokoyilo yoyamba, koyilo yachiwirindichitsulo pakati.

Mu ntchito yamagetsi, ma transfoma amatha kuwoneka nthawi zambiri. Zomwe zimagwiritsidwa ntchito kwambiri ndi gawo lamagetsi monga kutembenuka kwamagetsi ndi kudzipatula:

①: Kusintha kumatha kugawidwa m'mitundu iwiri: kutsika ndi kutsika. Zambiri zosinthira magetsi ndizotsika. Zida zamagetsi zotere zimagwiritsidwa ntchito pamagetsi apakompyuta, ma adapter a laputopu, ma charger a foni yam'manja, magetsi a pa TV, zophikira mpunga, mafiriji, zophikira zolowera, zida zamagetsi, ndi zina. kuti apeze DC yothamanga kwambiri.

②: Kukulitsa nthawi zambiri kumagwiritsidwa ntchito mumagetsi osinthira magetsi kapena mizere ya DC-DC, yokhala ndi mphamvu zadzidzidzi, ndipo batire 12V imasinthidwa kukhala 220V yotulutsa zida zamagetsi.

③: Kudzipatula kwama transfoma apamwamba kwambirindi chofunikira pachitetezo kuti zitsimikizire chitetezo cha zida zamagetsi. AC ikalowetsa, chosinthira chosinthira chiyenera kukhala ndi mtunda wotetezeka kuti chikwaniritse kudzipatula pakati pa kulowetsa koyambira kwa AC ndi magetsi achiwiri. Kumangirira koyambirira kwa thiransifoma kumapatulidwa ndi tepi yotsekera, ndipo mbali zoyambira ndi zachiwiri za mafupa ndizokhazikika. AC imadutsa m'thupi la munthu ndikupanga chipika ndi dziko lapansi, zomwe zimapangitsa kuti pakhale ngozi ya machitidwe aumunthu. Pali mayeso amphamvu kwambiri pa thiransifoma, zomwe zimafunikira 3KV.

Mgwirizano wamakono pakati pa koyilo yoyamba ndi koyilo yachiwiri:

Pamene thiransifoma ikuyenda ndi katundu, kusintha kwa koyilo yachiwiri kumapangitsa kusintha kofanana ndi koyilo yoyamba. Malinga ndi mfundo ya mphamvu ya maginito, zimaganiziridwa kuti ma coil a pulayimale ndi achiwiri amasiyana mosiyanasiyana ndi kuchuluka kwa ma koyilo otembenuka. Pakali pano kumbali yokhala ndi matembenuzidwe ambiri ndi ang'onoang'ono, ndipo panopa kumbali yocheperapo ndi yokulirapo.

Itha kuwonetsedwa ndi njira iyi: koyilo yoyamba / yachiwiri yapano = kutembenuka kwa koyilo yachiwiri/kutembenuka koyambira koyambira.

Zida za coil za transformer zikuphatikizapowaya enameled, atatu wosanjikiza insulated waya, mkuwa zojambulazo,ndipepala lamkuwa. Waya wa enameled nthawi zambiri amagwiritsa ntchito waya wopindika wamitundu yambiri. Ubwino wa waya wopotoka wamitundu yambiri ndikupewa kukopa kwa waya wamkuwa, koma waya wopindika wamitundu yambiri ungayambitse phokoso. Waya wosanjikiza katatu amagwiritsidwa ntchito mu thiransifoma ndi mtunda wosakwanira wachitetezo kapenachigoba chaching'onodera, ndi zojambulazo zamkuwa ndi pepala lamkuwa zimagwiritsidwa ntchito muzosintha zamphamvu kwambiri.

Njira yokhotakhota ya koyilo imatha kukonza EMI ya thiransifoma, makamaka pamagetsi otsika amphamvu obwerera. Kutsekereza koyilo ndi kutchingira ndikofunikira kwambiri kwa EMI. Kumangirira kwa koyilo kumakhudza kutayikira kwa inductance ndi parasitic capacitance ya thiransifoma, ndipo kumakhudza kutayika kwa thiransifoma.

 

Kusiyana pakatiotsika pafupipafupi tiransifomandima transfoma apamwamba kwambiri:

① Ma frequency ogwiritsira ntchito Transformer
Malinga ndima frequency osiyanasiyana ogwiritsira ntchito transformer, imatha kugawidwa m'magulu otsika kwambiri komanso ma transfrequency transfoma. Mwachitsanzo, m'moyo watsiku ndi tsiku, ma frequency a mafakitale a AC ndi 50Hz, ndipo timatcha thiransifoma yomwe ikugwira ntchito pafupipafupi iyi ndi otsika-frequency transformer; pomwe ma frequency ogwiritsira ntchito osinthira ma frequency apamwamba amatha kufika makumi a KHz mpaka mazana a KHz. Kwa otsika-frequency transformers ndi otsika kwambiri omwe ali ndi mphamvu zofanana zotulutsa mphamvu, voliyumu ya transfrequency transformer ndi yaying'ono kwambiri kuposa ya otsika-frequency transformer. Transformer ndi gawo lalikulu kwambiri pamagawo amagetsi. Kuonetsetsa kuti mphamvu yotulutsa mphamvu ikucheperachepera, chosinthira chapamwamba chiyenera kugwiritsidwa ntchito, kotero kuti makina othamanga kwambiri amagwiritsidwa ntchito posintha magetsi.

② Mfundo yogwira ntchito ya thiransifoma
Mfundo yogwira ntchito ya transfrequency high-frequency transformer ndi otsika-frequency transformer ndi yofanana. Onsewa amagwira ntchito pa mfundo ya electromagnetic induction, koma potengera zinthu zopangira, zida zomwe zimagwiritsidwa ntchito pamagulu awo ndizosiyana. Pakatikati pachitsulo cha transformer yotsika-frequency nthawi zambiri imapangidwa ndi mapepala ambiri achitsulo a silicon omwe amalumikizidwa palimodzi, pomwe chitsulo chachitsulo chosinthira ma frequency apamwamba chimapangidwa ndi maginito okwera kwambiri.

③ Chizindikiro cha Transformer
Mu gawo lamagetsi lokhazikika la DC, chosinthira chotsika kwambiri chimatumiza siginecha ya sine wave. Mugawo losinthira magetsi, chosinthira chapamwamba kwambiri chimatumiza siginecha yothamanga kwambiri.

Ntchito zazikulu za thiransifoma ndi: kutembenuka kwamagetsi; kutembenuka kwa impedance; kudzipatula; kukhazikika kwamagetsi (magnetic saturation transformer), etc. Transformers amagwiritsidwa ntchito pafupifupi pazinthu zonse zamagetsi ndipo ndi gawo lofunikira kwambiri. Mfundo ya transformer ndi yosavuta. Malinga ndi zochitika zosiyanasiyana zogwiritsiridwa ntchito ndi ntchito zosiyanasiyana, njira yokhotakhota ya transformer idzakhalanso ndi zofunikira zosiyanasiyana.

 

Mtengo wa magawo XuanGe Electronics

Zaka 15 za akatswiri opanga zida zamagetsi zamagetsi