Hi!
I've had a few of those cheap Soviet battery valves sat around for a while (1J29B and 1P24B)
I'm a relative novice in valve circuit design, but I've studied a few schematics on the www, and come up with a couple of 'first shot' ideas. Dont expect perfection, I've only ever made simple stages using 3 or 4 variety of valves, and a simple output stage.
I plan to build and test these ideas, and optimise them (provided they work at all)
My planned applications are probably instrument based effects, but whilst a harmonic generator may be useful, I also plan on making an iteration as clean as possible, so I will also be making effort to reduce THD, as well as create musical THD.
Something about DHTs seem to make circuits more difficult to design (perhaps that's all in my head)
I have drawn a couple of basic designs for using 1J29B in pentode mode, B+ 60V Vg2 45V; and also a triode wired operating on 45 to 60V. For the time being these will be powered using multiple PP3 batteries.
I would be grateful if some of the more seasoned designers could look over the schematics, simple as they are, and offer some practical critique/advice.
I've had a few of those cheap Soviet battery valves sat around for a while (1J29B and 1P24B)
I'm a relative novice in valve circuit design, but I've studied a few schematics on the www, and come up with a couple of 'first shot' ideas. Dont expect perfection, I've only ever made simple stages using 3 or 4 variety of valves, and a simple output stage.
I plan to build and test these ideas, and optimise them (provided they work at all)
My planned applications are probably instrument based effects, but whilst a harmonic generator may be useful, I also plan on making an iteration as clean as possible, so I will also be making effort to reduce THD, as well as create musical THD.
Something about DHTs seem to make circuits more difficult to design (perhaps that's all in my head)
I have drawn a couple of basic designs for using 1J29B in pentode mode, B+ 60V Vg2 45V; and also a triode wired operating on 45 to 60V. For the time being these will be powered using multiple PP3 batteries.
I would be grateful if some of the more seasoned designers could look over the schematics, simple as they are, and offer some practical critique/advice.