Thane Heins Perepiteia.

[aether22]

Groundloop, tempted to ignore your post since I don't really understand your circuit.
I'd put the L3 & L4 in series with various loads/open circuit and measure voltage across them, but I can't make sense of your secondary circuit.

However in theory drawing current shouldn't hurt the effect, 1000 turns at 1 amp is the same as 4,000 turns at 250ma as far as the transformer is concerned provided the wire is suited to carry such voltages/current and since adding more turns had no negative effect then pulling more current shouldn't either. (the core should have no way of knowing if something is 1,000 turns at 1 amp or 1,000 amps in one fat turn, it cares not how many times electrons must encircle it to get off the merry-go-round, it only cares how many are doing so)

Now Thane is right, experimental results trumps the most solid of theories so if he has evidence that what I just said is not true then I have no answer for that.

Anyway my suggestion for Groundloop is other than hooking the secondaries in series as above, please try the experiments I outlined where DC is put through the coils to create a bucking in the core and check for field leakage and if you have a meter to measure inductance measure the anti-series inductance of L3 and L4 which should be nearly zero. (perhaps correctly oriented laminations (which I assume are employed in Thanes toroids) are required and iron powder won't cut it?)

And an important question for Thane, did you find that the voltage vanished if you tried to pull say double the current of when you were reading 170v? (and if so did it begin to effect the primary circuit? I assume not based on your mot/gen video)

[Heinstein]

Dear All,

Happy Family Day for all you Ontarians out there.
It's very nice for me to be with such a keen and respectful group!

Can anyone see now why I decided to go to computer modeling?

My thought was to fix a primary input then double the relative permeability of the secondary toroid core material which would:

- double the induced secondary Back EMF fields ? and (theoretically) double the output.
- I was already at 60% with a very inefficient core ? but at least I didn?t have any secondary ?blow
  back? which was important ? and I could short both secondaries without any effect on the primary.
- I still believe that the fluxes are additive but perhaps there are other factors at play as     
  well? 

Then quadruple the permeability and so on (keep increasing it within practical levels) and lower the number of turns accordingly (which also has the effect of lowering the impedance ? increasing current and increasing the fields as well).

That way you get to use your unit in a 60 hz environment without any special electronics etc.

The above can be done mathematically quite easily as well for any math wizzes out there.

I would like to see someone tackle that task - Dr. Zahn at MIT said he would do it but he is currently looking at the generator and I have invited him to present with me when we go to NASA.

Thanks
Thane

[Heinstein]

@Group,

Here is my new core and coils. This is a Iron powder core with 2 x 1000 turns 0,2mm magnet wire on the secondary. First test is run with a 400 turns 0,35mm primary onto a Ferrite rod with 10mm air gap at each side. With approx. 1 Watt input the output voltage in each coil was approx. 100 Volt. Could not get any current out of the secondary coils. There was voltage but even a Neon bulb would not light up. The primary frequencies was approx. 20KHz. Next test will be with a air core coil on the primary with smaller air gap.

Groundloop.

Dear Groundloop,

QUESTIONS
What was your load?
What was your voltage across said load?
Did you have 1 load one each secondary?
or
1 load with the secondaries connected in series or parallel?

Thanks
Thane

[Steven Dufresne]

Luc,
I just realized that the ferrite rod that I rejected for my high permeability toroid (too short) fits inside Thane's toroids with about a 5mm air gap on either end. The rod is about 10cm [CORRECTED] long and about 1cm in diameter (well it's sort of round with two flattened sides.) You're welcome to it if you think it's a good idea.
-Steve
http://rimstar.org

[Bruce_TPU]

I woke up in the middle of last night and something hit me:

Increasing the output by increasing the turns count on the secondary leads to a dead end because of thicker wire needed (for low resistance) and more turns. The amount of copper would be sky high.

Then I thought about the TPU and Steven Marks's remark on this subject:
=======================
If you had a short wire and you move the magnet across it, you would always
have limited potential because the length of the wire was so short.
Ok, now what if we increase the length of the wire to many miles in length ,
even with a very weak magnetic field moving across the wire you still have a
much greater potential flow of power available.
If we out it into perspective of power per inch, it may be easier to understand.
If you have a small magnetic field moving across a wire 12 inches long, it can
generate an electron flow equal to let?s say 1 milivolt per inch.
If you move the magnetic 12 inches at the same speed , you get 12 milivolts
as you transgress the 12 inches of wire.
Understand that I am trying to convey a principle that you can understand for
use in the future.
So you have a wire 12 inches long, and you can make 12 milivolts moving a
magnet across it.
If you have a wire 1000 feet long and you move the same small magnetic
field across the length of it, you can create much more voltage potential
perhaps 12,000 milivolts let?s say.
So, you have managed to generate a significant amount of electric power
with a weak magnetic force.
Ok, how does this help us? Where am I going with this?
Suppose you have 1000 pieces of wire 12 inches long and you run the same
weak magnetic field over them all at the same time??. You get the same
flow of electrons.
If the wires are run in series , then you will get the 12,000 milivolts etc.
If you connect the wires in parallel, you will get a higher current but lower
voltage.
However, the power potential is the same whether you run the wires in series
or parallel.
=======================

What would happen if there were many parallel secondaries instead of a large series one? What would happen if HF-Litze is used for the secondaries with just enough turns to obtain a nice output voltage. Think of litz with eg. 600 individually insulated strands.

FYI: http://www.coonerwire.com/Products/LWC.html

I could not agree with M@rcel more, in his thinking and the above post.   

Cheers,

Bruce