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Author Topic: partzmans board ATL  (Read 17672 times)
Group: Elite Experimentalist
Sr. Member
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Posts: 355
Hi Jon,

Does the orientation of the plates need to be vertical ?

I want try and scale this up and build a low power oscillator.

My plan is to wind a spiral cap with a roll of copper foil to fill a large torroid I have .
Also in my collection are 50 or so 1uf stacked plate caps from my radio days.
Great work ,it aligns with early tpu builds and Mikes extraordinary contributions.
   
Group: Moderator
Hero Member
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Posts: 1927
Hi Jon,

Does the orientation of the plates need to be vertical ?

I want try and scale this up and build a low power oscillator.

My plan is to wind a spiral cap with a roll of copper foil to fill a large torroid I have .
Also in my collection are 50 or so 1uf stacked plate caps from my radio days.
Great work ,it aligns with early tpu builds and Mikes extraordinary contributions.

Hi 3D,

From my experiments no, the plates do not need to be vertical.  Some think the plates must be horizontal to work but that does not seem to be the case.  I have used horizontally stacked plate capacitors and they work well in this application.  Please keep us posted on your progress.

BTW, I have requested Peter to make this thread public again!

Pm
   
Group: Moderator
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Posts: 1927
3D,

In your experiments be aware that everything in the E-Field core area is subject to charge separation.  If you find that your arrangement does not appear to resonate, you will need to apply a bias voltage to the capacitance to provide a potential difference between L and C that will then create a resonant condition.  The bias voltage used should be equal to the V/turn of the primary.  Then, the first half cycle of resonance should approach ground or zero volts as much as possible.  To keep a periodic resonance going with successive cycles, the voltage across C must be reset to zero potential at the end of each half cycle.

Pm
   
Group: Elite Experimentalist
Sr. Member
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Posts: 355
All good here,
A mosfet gate is also a capacitor. O0
   

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Posts: 4040


Buy me some coffee
Bump
   
Group: Moderator
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Posts: 1927
I have decided to place this thread in the public domain with it's myriad of subjects.  Perhaps there will be some inspiration here for FE development.

Regards,
Pm
   
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