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Amplificator sigma 200


Guest vladdone

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Guest vladdone

am un amplificator sigma 200,dar nu functioneaza decat un canal,p celalalt nu mai am nici finalii erau tot ca la cel ce-mi functioneaza cred,KT 818 respectiv KT 819GM,de unde pot comanda asa ceva,sau ma puteti ajuta cu o schema ceva a circuitului,ca st si io mai nou in breasla :cry: multumesc

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Guest vladdone

KT818GM- 10A / 60V / 90W / 4MHzKT819GM- 10A / 60V / 90W / 4MHz primul e pnp al doilea e npn din cate stiu eu.. trebuie verificati .. ii poti inlocui cu BD249 / BD250 daca nu depasesti alimentarea de 2x40V , urcand tensiunea creste riscul de fum gros innecacios :rade:

aoleu fum gros inecacios de la finali sau toata mustaria?merci dar KT-uri nu mai gasesc asa-i?doar ce mi-ati recomandat ca inlocuitori
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revin, daca iti permite radiatorul e ok sa pui BD-urile , daca nu , ce au scris colegii e ok, dar eu nu vad rostul supradimensionarii exagerate , si mai ales la costul unui MJ.. dar avand in vedere ca majoritatea semiconductorilor de pe pita sunt facaturi respectiv clone , cam inteleg supradimensionarea.. (iar o sa zica unii ca ma contrazic in cele spuse dar am luat in calcul varianta fake-urilor si cea a semiconductoarelor de calitate)

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