On 11/02/2014 22:07, John Rehwinkel wrote:
I've built a few dividers down to 1Hz and they work phantastically. Always use
the 6AS6 and not just any pentode.
However, Eric said he wanted a low power implementation. Which makes me wonder
if any of the subminiature pentodes out there could be pressed into service.
Due to the way the rod pentodes work, I think they wouldn't work well. I'm
guessing the trick is how G3 causes the current to divide between G2 and the
plate. I may have to grab some tubes and breadboard some stuff.
- John
The heater power alone can be just a killer.
My (poor) understanding is the design of 6AS6 g3 is as a control grid
proper, like g1. And not there to repel secondary electrons from the
anode. I would guess that a given pentode must just be road tested to
see if it will work - as you say time to breadboard something.
G
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