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Old 6th Sep 2010, 1:40 pm   #14
mhennessy
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Join Date: Jul 2007
Location: Evesham, Worcestershire, UK.
Posts: 3,674
Default Re: Transistor Choice in radio project

Quote:
Originally Posted by ppppenguin View Post
For devices like the OC71 I think that hfe will be starting to fall noticeably in the audio band.
Really

I must check Towers when I get home, but I was assuming an ft of a few hundred KHz. This implies a really high Cob...
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