coxule Posted February 2, 2007 Share Posted February 2, 2007 sal. Nu stie cineva unde as putea gasi schema de la amplificatorul fisher ca-276...m-ar interesa ce finali are sau ce finali as putea folosi si la cati volti este alimentat. Link to comment Share on other sites More sharing options...
zal Posted February 2, 2007 Share Posted February 2, 2007 Mai demult am cautat si eu schema lui si nu am gasit-o nicaieri. Al meu a venit fara modulele finale si traf. Al tau e tot asa, sau vrei sa-l clonezi?Bafta! Link to comment Share on other sites More sharing options...
coxule Posted February 3, 2007 Author Share Posted February 3, 2007 Are jumate din finali made in japan si jumate nu scrie si am vrut sa stiu care is originalii....credca cei made in japan : 2SA1302 Link to comment Share on other sites More sharing options...
zal Posted February 4, 2007 Share Posted February 4, 2007 In realitate pe trz originali nu scrie ''made in Japan''.2SA1302 original e verde cu scrisul alb, ''Toshiba'' scris caligrafic pe semicerc la seriile mai vechi de 1990, cele de dupa 1990 pina in 1995 cind a incetat productia au un ''T''. La fel si complementarul 2SC3281 cu diferenta ca are corpul negru. In ziua de azi nu se mai gasesc. Au fost inlocuite de Toshiba dupa 1997 cu 2SA1943/2SC5200 care sint negri amindoi.Orice alta culoare de capsula, marime, scris cu tus argintiu sau gravat sint posibile falsuri, avind in vedere ca unul original costa cam 10 $. Mai sint unele clone facute dupa ei de Motorola si dupa 2SA1943/2SC5200 facute de Fairchild si altii care sint reusite, insa restul sint catastrofe. Acum vreo 10 ani rusii rebotezasera KT8101/8102 (care are capsula TOP3) ca 2SA1302/2SC3281, am ris de m-am stricat.PDF-ul postat de tine arata ca Mospec a schimbat capsula, cea originala e identica cu asta: Link to comment Share on other sites More sharing options...
coxule Posted February 4, 2007 Author Share Posted February 4, 2007 Daca as inlocui finalii cu STW34NB20 sau cu IRFP260Navand in vedere ca nustiu cat tin care sunt acuma ar fi vreo problema? Link to comment Share on other sites More sharing options...
zal Posted February 5, 2007 Share Posted February 5, 2007 Ti-ai gasit de lucru. :smt003 Nu e usor de loc. Link to comment Share on other sites More sharing options...
coxule Posted February 5, 2007 Author Share Posted February 5, 2007 Ma descurc eu :weedman: ....da se potrivesc daca ii inlocuiesc?...la putere ma refer...sau mai trebuie sa schimb ceva daca pun finalii precizati? Link to comment Share on other sites More sharing options...
zal Posted February 5, 2007 Share Posted February 5, 2007 In primul rind daca faci modificarea etajul final devine din complementar bipolar, cvasicomplementar mosi. Se modifica polarizarile, superdioda, limitarea in curent, trebuie protejati mosii cu diode Zener, etc.Mai bine-l lasi in pace. Link to comment Share on other sites More sharing options...
coxule Posted February 5, 2007 Author Share Posted February 5, 2007 ok mersi ca mi-ai zis ca poate bubuia ceva :weedman: . Il las asa si cand se arde ma duc la un specialist :partyman: :yawinkle: . Link to comment Share on other sites More sharing options...
zal Posted February 5, 2007 Share Posted February 5, 2007 De ce sa se arda? Doar nu-l tii la maxim ''zi de vara pina-n seara''.Chiar cu trz. facaturi poate rezista onorabil la nivel normal, chiar si mare. Fiind mai slabi se vor incinge mai repede. Daca pui numai boxe de 8 Ohmi nu ai de ce sa te temi. Link to comment Share on other sites More sharing options...
coxule Posted February 6, 2007 Author Share Posted February 6, 2007 Mai ma duc cu el la chefuri :weedman: de seara pana dimineata si cam la maxim merge :smt003 ...mam gandit sa pun cate 2 ventilatoare de 40mm*40*10 pe fiecare radiator...numa astea mai mici incap asa sper sa tina :partyman: . Link to comment Share on other sites More sharing options...
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