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Sfaturi upgrade amplificator


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In curand voi intra in posesia a 4 perechi de tranzistori complementari Thermaltrack de la ON Semiconductors tip NJL1302DG/NJL3281DG(Pmax=200W). Ma bate gandul sa-i folosesc pentru a inlocui tranzistorii finali dintr-un amplificator industrial echipat cu cate doua perechi de tranzistori pe fiecare canal. Tranzistorii pe care intentionez sa-i inlocuiesc sunt 2SA1491/2SC3855(Pmax=100W). Tranzistorii de tip NJL13202DG/NJL3281DG au incorporata cate o dioda in capsula, dioda fiind se pare ca de tip MUR820. Cum ar trebui sa conectez diodele incorporate in tranzistori astfel incat sa beneficiez de tehnologia Thermaltrack? As putea sa inseriez cele patru diode si sa le pun in montaj in locul diodelor D513, D513, D516 sau sa folosesc doar trei din diodele incorporate in capsulele finalilor. Care este varianta optima pentru a asigura un reglaj corect al curentului de mers in gol?Schema amplificatorului meu este atasata in mesaj.

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Fiecare tranzistor are cite o dioda incorporata.Avind 4 tranzistori finali pe canal, cite 2 in paralel [e fiecare ramura, foloseste 3 diode din transistori in locul diodelor de la Bias, una ramine in aer.Atentie la polaritate!

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