Gyraf HP amp need help, please

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Minguta

Well-known member
Joined
Jun 5, 2004
Messages
172
Location
Thailand
just have time to do this project. On schemetic use 135 and 136 but on parlist use 139 and 140.
So what is the best ?

Thank you.. ;)
 
They share a datasheet:

http://www.fairchildsemi.com/ds/BD/BD139.pdf


Only differences are voltage ranges, and those are listed out in the datasheet.

I built one of these Gyraf HP amps awhile ago with 139/140 pairs.
 

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