I have several pieces of this GOLDEN TUBES... Looking at Google It only reveal this design... http://www.anc-tv.ne.jp/~suzuki3/amp_at20/image2.gif
and the Rodina Radio...
Did anybody use this tube in their hi-fi amp or preamp? I want to see any triode curve or any audio application?
and the Rodina Radio...
Did anybody use this tube in their hi-fi amp or preamp? I want to see any triode curve or any audio application?
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Here you go
http://frank.pocnet.net/short/054/1/177.pdf
It is a vari-mu pentode so unless you trace the triode strapped curves to find a linear region they wont have much use in audio.
If you want some numbers, using RDH4 triode connection estimates, mu should be around 8, gm 1ma/V and rp 8k. All the same these numbers are useless since it is a vari-mu tube.
http://frank.pocnet.net/short/054/1/177.pdf
It is a vari-mu pentode so unless you trace the triode strapped curves to find a linear region they wont have much use in audio.
If you want some numbers, using RDH4 triode connection estimates, mu should be around 8, gm 1ma/V and rp 8k. All the same these numbers are useless since it is a vari-mu tube.
Suppressor grid is tied to the cathode (filament in this case). If you mean screen grid that would just mean operating the tube in pentode mode.
If they are Vari Mu pentodes why they are used in early russian radios as pre and output tubes like this ones from GTubes,com
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The are used as tuned RF amps if I´m not mistaken, nothing to do with audio. The output tubes aren´t actually 2k2m tubes but 2j2m (2Ж2М).
The fact that they are vari-mu doesn´t mean you cant use them in audio, just dont expect to swing their grid 2V without generating massive 2nd harmonic distortion. In a guitar amp it might be quite okay, who knows.
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