Uhlalutyo lwe-high-frequency switching power supply transformer
Kwiimveliso ze-elektroniki esidibana nazo imihla ngemihla, sinokufumana inani elikhuluundoqo wemagnethiamacandelo, phakathi apho kukho intliziyo yeukutshintsha unikezelo lwamandlaimodyuli - iukutshintsha i-transformer. Kule mihla, iimveliso ze-elektroniki ebomini zineemfuno ezingqongqo ngakumbi zokubonakala kweemveliso ezincinci kunye nezincinci kakhulu. Njengentliziyo yomthombo wamandla wezi mveliso ze-elektroniki, ukunikezelwa kwamandla okutshintshela i-high-frequency kunenzuzo yokusebenza okuphezulu, ubushushu obuhle kunye nobukhulu obuncinci. Ke ngoko, iimveliso ezininzi ze-elektroniki zizixhobo zombane ezitshintsha rhoqo. Njengabasebenzi kwishishini le-electronics, kufuneka ukwazi into malunga ne-transformer ye-switching power supply.
I-transformer sisixhobo esisebenzisa umgaqo wokungeniswa kwe-electromagnetic ukutshintshiselana ngoku. Amacandelo ayo aphambili abandakanyaikhoyili yokuqala, ikhoyili yesibinikwayeundoqo wentsimbi.
Kumsebenzi we-elektroniki, ii-transformers zinokubonwa rhoqo. Olona setyenziso luqhelekileyo lukwimodyuli yobonelelo lwamandla njengoguqulo lombane kunye nokwahlukaniswa:
①: Utshintsho lunokwahlulwa lube ziindidi ezimbini: inqanaba lokunyuka kunye nokuhla. Uninzi lwezibonelelo zombane zokutshintsha zisezantsi. Iimveliso zombane ezinje zidla ngokusetyenziswa kwizixhobo zombane zedesktop, iiadaptha zelaptop, iitshaja zemfonomfono eziphathwayo, izixhobo zombane zikamabonakude, iziko lokuphekela irayisi, iifriji, izipheko zokuvalela, izixhobo zombane, njl. njl ukufumana i-DC ephezulu.
②: Ukunyusa ngokuqhelekileyo kusetyenziswa kwi-inverter power supply okanye i-DC-DC imigca, kunye nombane ongxamisekileyo, kunye nebhetri ye-12V iguqulelwe kwi-220V yemveliso yezixhobo zombane.
③: Ukuba wedwa kwei-high-frequency switching transformersyimfuneko yokhuseleko ukuqinisekisa ukhuseleko lwezixhobo zombane. Xa igalelo le-AC, i-transformer yokutshintsha kufuneka ibe nomgama okhuselekileyo ukufezekisa ukuzihlukanisa phakathi kwegalelo eliphambili le-AC kunye nokunikezelwa kwamandla okwesibini. I-primary winding ye-transformer yodwa kunye ne-tape ye-insulating, kwaye i-primary and second side of the skeleton ihlukaniswe yodwa. I-AC idlula emzimbeni womntu kwaye yenza i-loop kunye nomhlaba, ibangela ingozi yokuqhuba komntu. Kukho iimvavanyo eziphezulu ze-voltage kwii-transformers, ezifuna ngokubanzi i-3KV.
Ubudlelwane bangoku phakathi kwekhoyili yokuqala kunye nekhoyili yesibini:
Xa i-transformer isebenza kunye nomthwalo, utshintsho kwi-coil yangoku yesibini kuya kubangela utshintsho oluhambelanayo kwi-coil yangoku. Ngokomgaqo we-magnetic balance balance, kuthatyathwa ukuba i-current ye-coil yokuqala kunye neyesibini ihambelana ngokungafaniyo nenani lokujika kweekhoyili. Ikhoyo ngoku kwicala elinokutshintsha okungaphezulu kuncinci, kwaye okwangoku kwicala elinokuguqulwa okuncinci kukhulu.
Inokubonakaliswa ngale fomyula ilandelayo: i-coil yokuqala yangoku / i-coil yesibini yangoku = i-coil yesibini iyajika / i-coil yokuqala iyajika.
Izinto zekhoyili ze-transformer zibandakanyai-enameled wire, i-three-layer insulated wire, i-foil yobhedu, kwayeiphepha lobhedu. Ucingo olunameleli lusebenzisa ucingo olujijekileyo olunemicu emininzi. Inzuzo yocingo olujijekileyo lwemicu emininzi kukuphepha ifuthe lesikhumba socingo lobhedu, kodwa ucingo olujijekileyo lwemicu emininzi lunokubangela ingxolo. I-Three-layer insulated wire isetyenziswa kwii-transformers ezinomgama onganeleyo wokhuseleko okanyeamathambo amancinciindawo, kunye nefoyile yobhedu kunye nephepha lobhedu lisetyenziswa kwiziguquli zamandla aphezulu.
Indlela yokucima i-coil inokuphucula i-EMI ye-transformer, ngokukodwa kwi-low-power flyback power supply. Ukujija iikhoyili kunye nokukhusela kubaluleke kakhulu kwi-EMI. Ukutshatyalaliswa kwekhoyili kuchaphazela ukuvuza kwe-inductance kunye ne-parasitic capacitance ye-transformer, kwaye inefuthe ekulahlekeni kwe-transformer.
Umahluko phakathiiinguqu eziphantsi-frequencykwayeii-high-frequency transformers:
① I-Transformer yokusebenza rhoqo
Ngokutsho kweiifrikhwensi zokusebenza ezahlukeneyo ze-transformer, ngokuqhelekileyo inokuthi ihlulwe ibe yi-low-frequency transformers kunye ne-high-frequency transformers. Ngokomzekelo, kubomi bemihla ngemihla, i-frequency ye-industrial frequency AC yi-50Hz, kwaye sibiza i-transformer esebenza ngeli xesha i-low-frequency transformer; ngelixa i-frequency yokusebenza ye-high-frequency transformer inokufikelela kumashumi e-KHz ukuya kumakhulu e-KHz. Kwiinguqu ze-frequency eziphantsi kunye ne-high-frequency transformers kunye namandla afanayo okuvelisa, umthamo we-high-frequency transformer uncinci kakhulu kunomguquli ophantsi. I-transformer yinxalenye enkulu kwisekethe yokubonelela ngombane. Ukuqinisekisa umbane ophumayo ngelixa unciphisa umthamo, kufuneka kusetyenziswe i-high-frequency transformer, ngoko ke i-high-frequency transformer isetyenziselwa ukunikezelwa kwamandla okutshintsha.
② Umgaqo osebenzayo we-transformer
Umgaqo osebenzayo we-high-frequency transformer kunye ne-low-frequency transformer iyafana. Zombini zisebenza kumgaqo wokungeniswa kwe-electromagnetic, kodwa ngokwezinto zokwenziwa kwezinto, izinto ezisetyenziselwa iicores zazo zahlukile. Ingundoqo yentsimbi ye-low-frequency transformer ngokuqhelekileyo yenziwe ngamacwecwe amaninzi e-silicon ahlanganiswe kunye, ngelixa i-iron core ye-high-frequency transformer yenziwe ngezinto eziphezulu zemagnethi.
③ Isiginali yothumelo lweTransformer
Kwisekethe yonikezelo lwamandla ombane ozinzileyo we-DC, i-low-frequency transformer ihambisa i-sine wave signal. Kwisekethe yokunikezelwa kwamandla okutshintsha, i-high-frequency transformer idlulisela i-high-frequency pulse square wave signal.
Imisebenzi ephambili ye-transformer yile: ukuguqulwa kombane; ukuguqulwa kwe-impedance; ukubekwa wedwa; Uzinzo lombane (i-magnetic saturation transformer), njl. Umgaqo we-transformer ulula. Ngokwamaxesha ahlukeneyo okusetyenziswa kunye nokusetyenziswa okwahlukileyo, inkqubo yokujika ye-transformer iya kuba neemfuno ezahlukeneyo.
Iminyaka eyi-15 yomvelisi wamacandelo e-elektroniki
Ixesha lokuposa: Oct-17-2024