On Tue, 19 Sep 2000 15:24:03 +0100 Peter Chadwick
<Peter_Chadwick@mitel.com> writes:
>
>Tom says;
>
>>Everyone keeps talking about "mu".
>
>>Why?
>
>Tom, Haven't you learned that the ONLY way that it is possible to run
>a linear
>PA is in GG zero bias? For that, you have to have a high mu tube!
>
>In grounded cathode of course, gain is [mu. Rl]/[Rl + Ra], so gain is
>proportional to mu. Thus high mu has advantages in reducing the amount
of grid
>swing, and thus grid current.
>
>73
>
>Peter G3RZP
>
Point of gain: Grounded grid gain is actually a bit better, than
grounded cathode, as it is equal to [(mu.+1) Rl]/[Rl + Ra]
73,
Marv WC6W
*
________________________________________________________________
YOU'RE PAYING TOO MUCH FOR THE INTERNET!
Juno now offers FREE Internet Access!
Try it today - there's no risk! For your FREE software, visit:
http://dl.www.juno.com/get/tagj.
--
FAQ on WWW: http://www.contesting.com/FAQ/amps
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
|