Tube Calculators

[Structo]

This may be old news to most of you but I stumbled on this today.
It has a bunch of good calculators for tube properites and component associated with tubes.

http://www.pentodepress.com/home/amplif ... capacitor/

[David Root]

I've seen this before but I had forgotten about it. I normally use TubeCad for tube calcs but TubeCad doesn't do feedback calcs, or the filter calcs.

Thanx for reminding us about it, Tom.