Ha!
Coming full circle four years later, I have jammed together some crummy triode curves.
They look better in person.
http://webpages.charter.net/dawill/Images/7KY6.gif
Tim
Coming full circle four years later, I have jammed together some crummy triode curves.
They look better in person.
http://webpages.charter.net/dawill/Images/7KY6.gif
Tim
Very cool -- mu~30 and rp ~ 1K ... is that right? Pins are only slightly different from a 6688 or 7788, and it looks like a nice cheap lower mu alternative to those.
I've been looking for something to build a push-pull amp out of with some 5K:8 transformers, and didn't want to use the 2A3's I'm supposed to. These look to fit the bill quite nicely.
I've been looking for something to build a push-pull amp out of with some 5K:8 transformers, and didn't want to use the 2A3's I'm supposed to. These look to fit the bill quite nicely.
This appears to be the same as an 11HM7 with a different heater. It makes a good driver tube for sure, especially in pentode mode.
Have you looked at the screen dissipation when in triode mode? A lot of the high Gm video pentodes when triode connected quickly exceed the G2 power ratings... G2 is usually the limiting factor (not the plate dissipation).
Also, as a triode, the miller capacitance is probably pretty high.
Pete
(some related pentode data: http://www.pmillett.com/pentodes.htm)
Have you looked at the screen dissipation when in triode mode? A lot of the high Gm video pentodes when triode connected quickly exceed the G2 power ratings... G2 is usually the limiting factor (not the plate dissipation).
Also, as a triode, the miller capacitance is probably pretty high.
Pete
(some related pentode data: http://www.pmillett.com/pentodes.htm)
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