If it is a triode, it often hapens in these russian data sheets.
Look also at the data for the more popular GI6 and GI7 UHF triodes.
The capacitances are measured and stated in the data sheet
as for the grounded cathode configuration, even if the tube is
intended and used for GG service, so the values will swap.
So, the output 0.06pF GC will be the feed-through c for GG
and the 19pF feed-through GC will be the output c for GG.
Probably input c at 12.5 (31.5-19).
Or I make a mistake?
73,
Traian
"Rich..." wrote:
> >Hi Richard!
> >
> >I got my hands on a couple of Russian GI-33B's.
> >With a small handle on top ;o) but guess one has to start somewhere...
> >Seems to be VERY rugged!
> >
> >The tube data is as follows:
> >
> >... ... ...
> >Input capacitance 31.5pF
> >Output capacitance is less or equal 0.06pF
> >Feed-through capacitance is 19pF !!!
> >
> These are reversed.
>
> >...
>
> - R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K,
> www.vcnet.com/measures.
> end
>
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