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Guest Filip Cristian

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Guest Filip Cristian

Va rog sa-mi spuneti si mie cu ce as putea inlocui doua diode care stabilesc tensiunile in bazele a doua tranzistoare final si prefinal in etajul de emisie dintr-in President Jackson, notate de producator in schema originala MVI-Y respectiv MVI.Y ? Va multumesc

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Guest mister_rf

Cele doua diode sunt diode cu siliciu... acum vor fi mici diferente daca se utilizeaza o dioda de tip 1N4148, 1N4007 sau BA157. Solutia corecta se poate afla prin incercari... Prima data foloseste diode de tipul BA157-BA159 si apoi 1N4148, 1N4154...

Dupa inlocuirea diodelor, se va regla curentul de colector al tranzistoarelor finale, pornind cu VR9 de la valoarea minima si cu VR10 de la valoarea maxima... ai indicatiile aici:

http://www.cbsite.nl/modif/president/ja ... ck_tra.htm

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