Successful TPU-ECD replication !

[ronotte]

@Otto,

sorry, to set the correct gain (at 29)  you need also of the attached paper. I can design the whole thing if you want.

Roberto

[ronotte]

@Otto,

sorry to give you it in ...pills...but I think that you can use it, just replace the output trnsformer with your CC  that in every case will need to be modified in order at leas to allow for correct dissipation in the output EL34 push-pull.
Roberto

[otto]

@Roberto,

thanks a lot, no need. I found a schematic that I want to try. Today after work Im as always on my workbench. I hope for success and then.....finally to fire up my coils with sine waves!!! For the first time.
I already posted that I connected in paralel to my bulb a cap so I have sine waves but thats not the same as using tubes. With my cap in paralel to the bulb I got sine waves and a lot of little waves. Thats hash. When Im lucky and with a good frequency mix my sines are almost clean and then is the light veeeery bright. This is 1 the reasons for tubes: clean sines. Of course not only this.

Otto

PS: more tomorrow

[MrMag]

Otto,

Here is a schematic for a tube generator that will give you 20hz - 1 Mhz. It is from an old tube heathkit. Looks pretty simple to build when you take into consideration that you only want the sine wave and not square.

Tim

[turbo]

@Otto,

all the mentioned tube oscillators are FOR HIGH FREQUENCY operations. For our range of operations: Hz to at least 300KHz you need a low frequency ocillator: so better don't use Colpitt, Hartley, etc.

Roberto

What??

Dude pure BS.
These oscillators are capable to produce ANY desired frequency as long as it is within the limits of the supported characteristics of the used tube.

By the way, the Higher frequency's are the real catalyst and were advised to use Vhf Rf Amps.. go figure.

M.