Greetings,
There are some sweep tubes that have G3 separate from the cathode connection. Is there any advantage to having a small positive voltage on G3 instead of grounding it? On the tubes that have G3 separate, some of the tube sheets suggest 30 or so volts.
Thanks,
Ray
There are some sweep tubes that have G3 separate from the cathode connection. Is there any advantage to having a small positive voltage on G3 instead of grounding it? On the tubes that have G3 separate, some of the tube sheets suggest 30 or so volts.
Thanks,
Ray
Search this board for "snivets" or"Barkhousen oscillation" for some interesting reading about the original use of these tubes...
Hello All,
I would say that G3 is another electrode to play with. Who knows how many watts it can dissipate before it blows up. Perhaps G3 drive? Perhaps a place to inject feedback?
More grids is equal to more variables = combinations and permutations.
Plan out a few what ifs and hook one up to a curve tracer.
DT
All just for fun!
I would say that G3 is another electrode to play with. Who knows how many watts it can dissipate before it blows up. Perhaps G3 drive? Perhaps a place to inject feedback?
More grids is equal to more variables = combinations and permutations.
Plan out a few what ifs and hook one up to a curve tracer.
DT
All just for fun!
g3 doesn't have much effect for control use except in some special dual control tubes which have a fine mesh g3. Take a look at this link on g3 effects:
http://www.diyaudio.com/forums/tubes-valves/160240-suppresor-grid-used-feedback.html
http://www.diyaudio.com/forums/tubes-valves/160240-suppresor-grid-used-feedback.html
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