13-11-2016, 04:12 PM
(This post was last modified: 13-11-2016, 04:16 PM by Mike Watterson.)
Look at shape of Ia vs Va for fixed grid voltage for a triode and a Pentode. You'll see triode has slow start and then shoots up (like a rectifier or forward diode). The Pentode starts quick and then at the "knee" goes nearly flat, the flatter the better (a little like a Zener (reversed diode) or transistor).
gm is only one parameter.
As pwdrive / Lawrence hinted, the shortform catalogues are not very detailed, you need the makers data, which can be 2 to 30 pages.
gm is only one parameter.
As pwdrive / Lawrence hinted, the shortform catalogues are not very detailed, you need the makers data, which can be 2 to 30 pages.
