Njira zosiyanasiyana zolumikizira mawaya zimatha kukhudza mphamvu yogawa ya ma transformer windings, zomwe zimakhudza mwachindunji magwiridwe antchito a ma transformer. M'nkhaniyi, tikambirana kwambiri za mawonekedwe a ma transformer.
Capacitance yogawa ya transformer ndi capacitance ya parasitic yomwe imapangidwa chifukwa cha kusiyana komwe kungachitike. Ndi gawo lamagetsi lomwe limapezeka kwambiri, komwe kuli capacitance yogawa pakati pa ma insulators awiri bola ngati pali kusiyana kwa magetsi. Capacitance yogawa siikhudza kwambiri ma circuits omwe ali ndi ma frequency otsika, koma zotsatira zake ziyenera kuganiziridwa pa ma frequency apamwamba.
Mphamvu yogawa ya ma transformer windings ingagawidwe m'magawo anayi akuluakulu:
(1) mphamvu ya ma turn capacitance. Capacitance yopangidwa ndi kusiyana komwe kulipo pakati pa ma turn oyandikana. Ngakhale kuti mphamvu ya ma turn capacitance pakati pa ma turn capacitance ndi yaying'ono, kuyatsa ndi kutulutsa mphamvu mobwerezabwereza pakati pa ma turn kungayambitse kuwonongeka kwa insulation komanso kusweka komanso kufupika kwa waya wolumikizidwa mu ma volteji apamwamba kapena amphamvu kwambiri.
(2) Kuchuluka kwa mphamvu pakati pa zigawo zosiyanasiyana. Kuchuluka kwa mphamvu pakati pa zigawo ziwiri ndiko gwero lalikulu la mphamvu yogawa, yomwe imapanga kuzungulira kwa oscillation komwe kumatuluka mpweya wambiri pama frequency apamwamba, zomwe zimawonjezera mavuto osokoneza magetsi komanso kupsinjika kwa magetsi pa transistor yosinthira.
3) Kulumikizana kwa capacitance. Capacitance pakati pa ma windings oyambira ndi achiwiri, oyambira ndi a VCC, ndi ma windings oyambira ndi achiwiri ndi a VCC. Capacitance iyi imapereka njira yolumikizirana yolumikizirana kwa mode wamba, zomwe zingayambitse phokoso kuchokera kumbali yoyamba kupita kumbali yachiwiri, zomwe zimakhudza kukhazikika kwa zotuluka.
(4) Kuthamanga kwa mphamvu. Kuthamanga kwa mphamvu ya ma windings kupita ku ma magnetic cores, zigawo zotchingira, kapena ma casings kumachitika chifukwa cha zinthu monga dera, kapangidwe, kapena kapangidwe kake. Ngakhale kuti ma capacitor awa ndi ang'onoang'ono, amatha kukhudza makhalidwe apamwamba a ma frequency pansi pa mapangidwe enaake.
Mphamvu yogawa ya ma transformer windings nthawi zambiri imakhala yoopsa, ndipo imakhudza ma circuits motere:
1. Mavuto okhudzana ndi kugwirizana kwa maginito. Kugawa mphamvu yamagetsi kumapereka njira yolumikizirana pakati pa ma windings oyambira ndi achiwiri, zomwe zimapangitsa phokoso kumbali yoyamba kuti ligwirizane ndi mbali yachiwiri kudzera mu capacitance, zomwe zimapangitsa kuti pakhale kusokoneza kwa ma mode wamba ndikuwononga umphumphu wa chizindikiro cha dera.
2. Kuchepa kwa mphamvu. Ma capacitor ogawidwa m'mabwalo amatha kupanga ma capacitive currents, zomwe zimapangitsa kuti mphamvu yogwira ntchito ya ma transformer iwonjezereke komanso kuti mphamvu yonse ichepe. Kachiwiri, njira yolipirira ndi kutulutsa mphamvu yogawidwa imawonjezera kutayika kwina, kutentha kozungulira kumawonjezeka, ndipo mphamvu imachepa.
3. Kuwonongeka kwa chitetezo chamthupi. Kugawa mphamvu yamagetsi kungayambitse kuchuluka kwa magetsi m'deralo m'malo omwe ali ndi mphamvu zambiri zamagetsi, zomwe zimapangitsa kuti mphamvu yamagetsi yotuluka komanso kuwonongeka kwa zinthu zotetezera kutentha kuchuluke.
4. Kuchepa kwa kukhazikika kwa magwiridwe antchito. Kugawa mphamvu ndi kutayikira kwa mpweya kumapanga dera lozungulira, zomwe zimapangitsa kuti magetsi azisinthasintha mumagetsi osinthira, zomwe zimapangitsa kuti magetsi azisinthasintha kwambiri pa transistor yosinthira komanso kuwonongeka kwa chipangizocho.
Mu ntchito zama frequency apamwamba, mphamvu yogawa magetsi imatha kusintha mtundu wofanana wa ma transformer, zomwe zimapangitsa kuti ma frequency ayankhe mosiyana ndi mtengo wa kapangidwe kake ndikukhudza kukhazikika kwa mphamvu. Mphamvu yogawa magetsi imathanso kutumiza phokoso la switch kupita ku output terminal kudzera mu coupling, kuwonjezera mphamvu yamagetsi ndikuchepetsa mtundu wa mphamvu yotuluka.
5. Zolepheretsa kupanga ndi kukwera kwa ndalama. Pofuna kuletsa mphamvu ya capacitance yogawa, kungakhale kofunikira kupanga ma circuit ena owonjezera a RC buffer compensation, zomwe zimawonjezera zovuta komanso mtengo wa kapangidwe ka circuit. Muzochitika zama frequency ambiri, kuti muchepetse capacitance yogawa, kungakhale kofunikira kugwiritsa ntchito zipangizo zotenthetsera zokwera mtengo komanso njira zovuta popanga ma transformer, motero kuonjezera ndalama.
Mu ma transformer amphamvu kwambiri, tingachepetse mphamvu yogawa ya transformer mwa kuwonjezera mtunda pakati pa ma windings, kuwonjezera makulidwe a insulation, kugwiritsa ntchito zipangizo zochepetsera kutentha zomwe sizimasinthasintha, kusintha njira zozungulira, komanso kuwonjezera kapangidwe ka shielding layer.
Nthawi yotumizira: Novembala-03-2025
