Hi Carl,

Have you wound a new TPU like GK's?

Can you lower the current limiting resistors to 2x10ohm like GK so the setup can be identical?



Regards,

D.

so he is using 5 Ohm's for his current limiting. OK I can do that. My TPU is very clode to his but not exactly like his.

Mine is:

COllectors  15 turns of 16AWG stranded 6" coil

COntrol coils are 170 turns 26 AWG with a spacing of about 1/2" between coils.

Feedback coils cover the control coil segments, they are all in series right now.

SO you can see my TPU is not exactly like GK's or Otto's but it is close but all copper.

I was originally making a single loop collector but ran into a problem, I forgot to take into account the wire movement of the collector when trying to bend it (I had taped it before wrapping the control coils on it.

I still plan on making a New TPU with a single loop collector and want to use 30AWG controls with 16 AWG feedback, this is my next incarnation.

Anyhow, on the current test bed I need to change out the driver transistors tonight then I will find out what output I can achieve and if it matches GK's or Otto's (Or even comes close).

Quote from: starcruiser on January 09, 2007, 02:23:26 PM
so he is using 5 Ohm's for his current limiting. OK I can do that. My TPU is very clode to his but not exactly like his.

Mine is:

COllectors  15 turns of 16AWG stranded 6" coil

COntrol coils are 170 turns 26 AWG with a spacing of about 1/2" between coils.

Feedback coils cover the control coil segments, they are all in series right now.

SO you can see my TPU is not exactly like GK's or Otto's but it is close but all copper.

I was originally making a single loop collector but ran into a problem, I forgot to take into account the wire movement of the collector when trying to bend it (I had taped it before wrapping the control coils on it.

I still plan on making a New TPU with a single loop collector and want to use 30AWG controls with 16 AWG feedback, this is my next incarnation.

Anyhow, on the current test bed I need to change out the driver transistors tonight then I will find out what output I can achieve and if it matches GK's or Otto's (Or even comes close).

Copper:
depending on the cross section I.E. gauge. The quote "there are many ways to solve this' means lots of copper paths not lots of copper volume in the path. lots of paths means lots of magnetic fields to get excited. We are aiming at the stress from electrons aligning not the fields themselves. Think of it that way. I made the most dramatic advance when I changed to this way of thinking. I saw the results from c0msters hand wound coil demo and it clicked for me. So i went with that. And that is how I came up with my controls. It also lined up with alot of Tesla diagrams. Big copper, few loops to small copper lots of turns. Does any of this come the standard way of thinking? No. We are not doing standard things!
You have made great progress so far. Up your current to see other things.

Thanks GK,

I have copper as well.


I want to offer an analogy.

Imagine that way back when man first discovered fire.

There were those who knew how to do it but didnt understand it..there were those who probably thought they understood it but didnt know how to do it.

We are all in this with a bit of both going on and the similaraties are there.

The trouble is that we dont know where the petrol is...and how much.

I suggest a series relay (4pole..3 used)that will cut of all frquencies at the same time ,connected to an over voltage detect corciut that is variable..eg ...getting 20 volts...then set to 30...tune.....click!........set to 40....tune ...click.
I hope you get the idea.

It will need to be an active circuit. shorting the coils may not work...so in series with the drive will be  best.

using electronic devices to switch this may not work IE polyswitches. The type of current and voltage that becomes present is not what many devices are designed to see.

CONDISER THIS A DEVICE THAT MAY PREVENT PERSONAL INJURY


Lindsay Mannix

Quote from: Mannix on January 09, 2007, 06:02:39 PM
Thanks GK,

I have copper as well.


I want to offer an analogy.

Imagine that way back when man first discovered fire.

There were those who knew how to do it but didnt understand it..there were those who probably thought they understood it but didnt know how to do it.

We are all in this with a bit of both going on and the similaraties are there.

The trouble is that we dont know where the petrol is...and how much.

I suggest a series relay (4pole..3 used)that will cut of all frquencies at the same time ,connected to an over voltage detect corciut that is variable..eg ...getting 20 volts...then set to 30...tune.....click!........set to 40....tune ...click.
I hope you get the idea.

It will need to be an active circuit. shorting the coils may not work...so in series with the drive will be  best.

using electronic devices to switch this may not work IE polyswitches. The type of current and voltage that becomes present is not what many devices are designed to see.

CONDISER THIS A DEVICE THAT MAY PREVENT PERSONAL INJURY


Lindsay Mannix

I was thinking of opamp voltage level detection with the single pole relay connected from the +12 to the feedback relay. But my concern now is that when the relay breaks contact then I have the coil acting as an open ended transmission line in a runaway state. I could try disconnecting that first just to see, but I don't have the runaway state.
No shortcuts, eh?
I can still use the level detector.

tnx, giantkiller.