[AMPS] Series Tuned Tank?

[Tom Rauch]

> When I model a series L, the results also show an increase in Q,
> by a lot more than with the series cap.  But, there's a lot of options for
> values.  After hunting around for a while and not finding a mix that
> works, suggestions are welcome.

With the series L, make it an L network with zero j output.

The tube Cout becomes the L networks shunt component, while 
the L "feeds out" to the outside world.

Now take whatever impedance you wind up with and use another 
minimum-Q network to transform that back to 50 ohms.

In many (but not all) cases that will result in the lowest Q solution 
that provides acceptable harmonic suppression.


73, Tom W8JI
w8ji@contesting.com

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