On 04/26/2016 12:40 PM, Paul Koning wrote: > This sort of stuff doesn't seem to be all that common; I haven't seen > it elsewhere. Multiple tubes, like dual triodes or triode/heptodes > are pretty common, but those are just the active part.
The only "passive in the tube" examples I can think of in US manufacture are simple between-unit resistors, such as the 6N6. --Chuck