Mphamvu ya capacitor ndi mphamvu

Ngati awiri mlandu lipoti awiri ochititsa lotsekedwa, pakati pawo pali otchedwa angathe kusiyana, potsata kukula kwa mtengo ndi Masamu ochititsa lapansi. Zikatero, ngati milandu ndi ofanana ukulu koma ufalikire chizindikiro, mukhoza kulowa tanthauzo la capacitance, kumene mukhoza ndiye kutenga lingaliro mmene mphamvu ya capacitor lapansi. The capacitance magetsi a dongosolo ongokhala ochititsa awiri, chiŵerengero mmodzi wa asilikali kuti kusiyana ulipo pakati pa ochititsa lapansi.

Mphamvu capacitor amadalira capacitance lapansi. Iwo akhoza anatsimikiza mtima kuwerengetsera wa chiŵerengero izi. Mphamvu ya capacitor (chilinganizo) Adzaperekedwa ku unyolo:

W = (C * U * U ) / 2 = (Q * Q) / (2 * C) = Q * U / 2, pamene W- mphamvu ya capacitor C ndi capacitance, U- kusiyana angathe pakati pa mbale awiri (voteji) , q- phindu la kuyang'anira ndalama.

Mtengo wa capacitance chimadalira pa kukula ndi mawonekedwe a wochititsa ndi dielectric umene umawalekanitsa ochititsa izi. m'dongosolo limene munda magetsi ali anaikira (isanafalikire) kokha mu malo ena, amatchedwa condenser. The akuwauza kuti amapanga chipangizo akuitanidwira mbale. Ichi ndi kapangidwe zosavuta otchedwa kufanana-mbale capacitor.

Mophweka kwambiri chipangizo - awiri mbale mosabisa ndi luso kuchititsa magetsi. mbale izi imakonzedwa mu kufanana pa (ochepa) mtunda Chrixitu ndi ankasiyana wosanjikiza ku insulator ndi. The mphamvu munda wa capacitor mu nkhani iyi ndi isanafalikire makamaka pakati pa zipangizo. Komabe, pafupi m'mbali mwa mbale ndi danga ozungulira amapezeka cheza koma ofooka kwambiri. Iwo amatchedwa mabuku a m'munda kubalalika. Nthawi zambiri, anaganiza kunyalanyaza ndipo amaganiza kuti mphamvu zonse capacitor ndi kwathunthu pakati zipangizo. Koma nthawi zina mpaka pano n'komwe (makamaka ntchito milandu mikroemkostey kapena, Tikawonetsetsa Ultra-).

Zamagetsi capacitance (choncho, mphamvu ya capacitor a) zimadalira zipangizo. Ngati tiyang'ana kwa chilinganizo C = E0 * S / D, kumene C- capacitance, E0- ukulu mfundo za chizindikiro monga dielectric zonse (mu nkhani iyi, zingalowe) mtengo d- ndi mtunda pakati pa mbale, ndi kupanga mapeto yotsimikizika kuti capacitance zoterozo ndege capacitor ndi inversely njila kufunika mtunda pakati pa mbale ndi mwachindunji njila kwa malo awo. Ngati danga pakati maelekitirodi kumaliza ena dielectric enieni, ndiye mphamvu capacitor ndi mphamvu yake adzakhala zomwe E nthawi (E Pankhaniyi - ndi zonse dielectric).

Choncho, tingathe tsopano kufotokoza chilinganizo ndi mphamvu ndi kuthekera, amene amasonkhana pakati maelekitirodi awiri (mbale) wa capacitor kuti: W = Q * E * D . Komabe, zosavuta kufotokoza mfundo "capacitor mphamvu" mwa mphamvu: W = (C * U * U) / 2.

Chilinganizo kufanana ndi kugwirizana siriyo chomveka kwa chiwerengero cha capacitors olumikizidwa kwa batire la.