[Amps] SWR and amplifiers

[Steve Thompson]

If you think of the tube/transistor as a varying resistance, it 
doesn't matter which way the current flows :-)

Steve

>     ##  The tube cant  source anything.  It can only sink current.
> 
> 
> That's right, of course, as long as you think in the conventional current sense. People who think in the true electron motion sense will certainly claim that a tube can _only_ source, and never sink, current!