[Amps] An Extra Thank You!

[Paul M Dunphy]

At 05:22 PM 3/5/2009, you wrote:
>I didn't add the drive back in on mine, so I'm off by that 20W.
>
>I'm not sure I completely understand why the drive is added back.  You
>could write a thick, thick book with what I don't know about tubes,
>because when I went to school they weren't taught anymore.
>
>Jeff/KD4RBG

Jeff,

     I'm pretty sure it's because in a grounded grid amplifier the 
input drive signal is passed straight through, so you get it plus 
whatever the tube(s) squirt out.

     I'm sure there is a better "electrical engineer" answer, but 
that's how I understand it.

73, Paul VE1DX