Iindlela ezahlukeneyo zokufaka iingcingo zinokuchaphazela i-capacitance esasazekileyo yee-transformer windings, nto leyo echaphazela ngokuthe ngqo ukusebenza kwee-transformers. Kweli nqaku, siza kugxila kwi-parameter yee-transformers.
I-capacitance esasazwe ye-transformer yi-capacitance ye-parasitic eyenziwe ngenxa yokubakho komahluko onokubakho. Yiparameter yombane ekhoyo ngokubanzi, apho kukho i-capacitance esasazwe phakathi kwe-insulators ezimbini logama nje kukho umahluko we-voltage. I-capacitance esasazwe ayinampembelelo ingako kwiisekethe ezikwi-frequency ephantsi, kodwa iziphumo zayo kufuneka ziqwalaselwe kwi-frequency ephezulu.
I-capacitance esasazekileyo yee-transformer windings inokwahlulwa ibe ziinxalenye ezine eziphambili:
(1) i-capacitance phakathi kwe-turn. I-capacitance eyenziwe ngumahluko onokubakho phakathi kwe-turns ezikufutshane. Nangona ixabiso le-capacitance phakathi kwe-turns enye lincinci, ukutshaja nokukhupha okuphindaphindiweyo phakathi kwe-turns kunokukhokelela ekuwohlokeni kwe-insulation kunye nokwaphuka kunye ne-short circuit ye-enamel wire kwiimeko ze-voltage ephezulu okanye ezinamandla aphezulu.
(2) Umthamo we-Interlayer. Umthamo phakathi kweeleya ezahlukeneyo kwi-winding efanayo. Umthamo we-Interlayer ngumthombo ophambili we-distributed capacitance, eyenza i-oscillation loop ene-leaking inductance kumaza aphezulu, nto leyo ebangela iingxaki zokuphazamiseka kwe-electromagnetic kunye noxinzelelo lwe-voltage olukhulayo kwi-switching transistor.
3) Umthamo odibanisayo. Umthamo odibanisayo phakathi kwe-primary kunye ne-secondary, i-primary kunye ne-VCC, kunye ne-secondary kunye ne-VCC windings. Le capacitor ibonelela ngendlela yokudibanisa ukuphazamiseka kwemowudi eqhelekileyo, enokubangela ingxolo evela kwicala eliphambili ukuba idluliselwe kwicala lesibini, ichaphazele uzinzo lwemveliso.
(4) Umthamo olahlekileyo. Umthamo wee-windings ukuya kwii-magnetic cores, ii-shielding layers, okanye ii-casings ubangelwa zizinto ezifana ne-circuit, ulwakhiwo, okanye i-layout. Nangona ezi capacitors zincinci, zinokuba nefuthe kwiimpawu ze-high-frequency phantsi kwe-layout ezithile.
I-capacitance esasazekileyo yee-transformer windings idla ngokuba yingozi, kwaye impembelelo yayo kwiisekethe yile ilandelayo:
1. Iingxaki zokuhambelana kwe-electromagnetic. I-capacitance esasazekileyo ibonelela ngendlela yokudibanisa phakathi kwe-primary kunye ne-secondary windings, ebangela ingxolo kwicala eliphambili ukuba idibane necala lesibini nge-capacitance, nto leyo eyenza ukuphazamiseka kwendlela eqhelekileyo kwaye yonakalise ukuthembeka kwesignali yesekethe.
2. Ukuncipha kokusebenza kakuhle. Ii-capacitor ezisasazwayo kwiisekethe zinokwenza i-capacitive currents, nto leyo ekhokelela ekwandeni kwamandla okusabela kwii-transformers kunye nokwehla kokusebenza kakuhle. Okwesibini, inkqubo yokutshaja kunye nokukhupha i-distributed capacitance yonyusa ilahleko ezongezelelweyo, ukufudumeza okujikelezayo kuyanda, kwaye ukusebenza kakuhle kuyancipha.
3. Umonakalo kwi-insulation. I-capacitance esasazekileyo inokubangela uxinzelelo lwentsimi yombane yasekuhlaleni kwiimeko ze-voltage ephezulu, nto leyo ekhokelela ekwandeni kokuvuza komsinga kunye nokonakala kwezixhobo ze-insulation.
4. Uzinzo oluphantsi lokusebenza. Umthamo osasazekileyo kunye nokungena kokuvuza kwenza isekethe evakalayo, okubangela ukushukuma kwevolthi kumbane otshintshayo, okubangela uxinzelelo olukhulu lwevolthi kwi-transistor etshintshayo kunye nomonakalo kwisixhobo.
Kwizicelo ze-high-frequency, i-distributed capacitance inokutshintsha imodeli yesekethe efanayo yee-transformers, nto leyo ebangela ukuba impendulo ye-frequency iphambuke kwixabiso loyilo kwaye ichaphazele uzinzo lwesekethe. I-distributed capacitance inokudlulisa ingxolo yeswitshi kwi-output terminal ngokuhlanganisa, ukwandisa i-power ripple kunye nokunciphisa umgangatho wemveliso.
5. Ukuyila imida kunye neendleko ezongezelelekileyo. Ukuze kuthintelwe impembelelo ye-distributed capacitance, kunokufuneka ukuba kuyile ii-RC buffer compensation circuits ezongezelelweyo, nto leyo eyonyusa ubunzima kunye neendleko zoyilo lwe-circuit. Kwiimeko eziphindaphindayo, ukunciphisa i-distributed capacitance, kunokufuneka kusetyenziswe izixhobo zokukhusela ezibizayo kunye neenkqubo ezintsonkothileyo ukuyila ii-transformers, ngaloo ndlela konyuswe iindleko.
Kwii-transformers ezisebenzisa i-frequency ephezulu, singanciphisa amandla asasazwayo e-transformer ngokwandisa umgama phakathi kwee-windings, ukwandisa ubukhulu be-insulation, sisebenzisa izixhobo ze-insulation ezihlala zisebenza nge-dielectric ephantsi, ukuphucula iindlela ze-winding, kunye nokwandisa uyilo lwe-shielding layer.
Ixesha lokuthumela: Novemba-03-2025
