Successful TPU-ECD replication !

[geoffb63]

When talking about "tubes" why not think in terms of GDT's (Gas Discharge Tubes)
Citel America Inc make various voltage devices with 10K A capability.
Here's a circuit that can produce "kicks" into your primary winding.



GDT1 protects the capacitor from overvoltage
GDT2 discharges at 90V

Regards
Geoff

[Grumpy]

http://www.ee.ualberta.ca/~schmaus/elect/pas1.html

[dfro]

otto,

   I would like to ask some questions about your TPU design.  I preface my comments and questions by saying that I don't understand your design yet and I will be trying to get up to speed on other threads.  I am a total beginner in this, so take what I say much like a child asking, "why is the sky blue." (That is actually a very deep question, by the way.)  Anyway...

   I think you have got the essential nature of the device.  Your results are very exciting!  I think you and the other researchers are heroes.  I am not certain why you have the 4" loop.  I seem to remember that you are using it to pick up the rising magnetic field caused by the control coils.  Could one or more multi-turn coils in the vertical plane be essential to stability of the device?  All of SM's devices have a vertical rim.  If there was not a need for something oriented vertically, I think he would have made it flat.  On his smallest device, it looks like there is a single vertical coil wrapped around some kind of core in the middle.  On the device where he places two magnets, he has what look like four metal cores with what I imagine would be coils wrapped around them.  Could these coils, which I think are in series with the collector coil, be essential for stability.  Could the extra inductance help seed the signal? Maybe SM found that placing vertical coils in between the control coils helped in some way.

   Also, why not try to step up the control coil voltage using pulses, diodes and caps?  Maybe a little higher voltage and more inductance is one of the keys to the TPU not running away on you.  Could this make it easier to stay well off of a perfect frequency conversion while still getting your seed that builds?

Just some thoughts.

[otto]

Hello all,

@dfro

First I have to say that Im not working on the ECD anymore. The ECD was working great but I always wanted to follow our master and that was "controls all over the collectors in segments....".

For me, the ECD was only for learning about coils....

Yes, the vertical part of a TPU is what we need to explore. The height of such a 6" TPU is 44mm or 1 3/4". My previous TPU had 4 turns of lamp wire on top and 1 turn of lamp wire on bottom (4" loop) for the collectors. All arround was wound a primary and secondary control coil, in sections....it was a "wild" TPU. I was almost not able to control it with MOSFETs and I burned a lot of them. Yes, yes, the tubers would say that I finally have to build tube oscillators but as I have to work all the days long I have no time .
My newest TPU has equal number of turns for each collector and this newest is not a wild one. This means that one part of the stability of a TPU  depends on the collector lenght or the difference of the collectors wires (top bottom) or call it what you want.
I dont think that the controls are essential for the stability but who knows??
Youre right about vertical coils BETWEEN the collectors. They really help. But the spacing between the collectors is important. I mentioned this a looooong time ago. The reason is that all collectors are working together in the vertical direction and when you think about the thickness of the TPU = 2" you can see that there is a lot going on in the horizontal direction too.

All the time Im working only with coils without caps, diodes.....if you think that I need cups to step up the voltage then youre wrong. I can get a lot of voltage only with coils but we dont need a very high voltage for a working TPU. We also dont need a lot of current for a working TPU. We also dont need a lot of wires for a working TPU (remember the open TPU).

What DO we need then???

Our master said: controls wound all over the collectors in sections.......

Otto

PS: Im following my - our master!!

[John M]

Hello all,

@dfro

First I have to say that Im not working on the ECD anymore. The ECD was working great but I always wanted to follow our master and that was "controls all over the collectors in segments....".

For me, the ECD was only for learning about coils....

Yes, the vertical part of a TPU is what we need to explore. The height of such a 6" TPU is 44mm or 1 3/4". My previous TPU had 4 turns of lamp wire on top and 1 turn of lamp wire on bottom (4" loop) for the collectors. All arround was wound a primary and secondary control coil, in sections....it was a "wild" TPU. I was almost not able to control it with MOSFETs and I burned a lot of them. Yes, yes, the tubers would say that I finally have to build tube oscillators but as I have to work all the days long I have no time .
My newest TPU has equal number of turns for each collector and this newest is not a wild one. This means that one part of the stability of a TPU  depends on the collector lenght or the difference of the collectors wires (top bottom) or call it what you want.
I dont think that the controls are essential for the stability but who knows??
Youre right about vertical coils BETWEEN the collectors. They really help. But the spacing between the collectors is important. I mentioned this a looooong time ago. The reason is that all collectors are working together in the vertical direction and when you think about the thickness of the TPU = 2" you can see that there is a lot going on in the horizontal direction too.

All the time Im working only with coils without caps, diodes.....if you think that I need cups to step up the voltage then youre wrong. I can get a lot of voltage only with coils but we dont need a very high voltage for a working TPU. We also dont need a lot of current for a working TPU. We also dont need a lot of wires for a working TPU (remember the open TPU).

What DO we need then???

Our master said: controls wound all over the collectors in sections.......

Otto

PS: Im following my - our master!!

Hi Otto,

It sounds like you are making great progress. I have been on this web site for almost 3 months trying to gather as much knowledge as possible. It has been overwhelming. You could do me and others a great favor if you could give us an update on how to design a basic TPU, from what you have learned up till now. I can certainly understand if you don't have time.

John