Thane Heins BI-TOROID TRANSFORMER

[ramset]

Broli
Thanks for doing that!
There were two BTT links in those 11 documents [two zip files]
I forwarded to you ,one BTT test, as recent as the 10th of this month.
Did you get [post] all 11?
Chet
PS
I believe Broli posted everything,I will check when I get
back from working later this week.[sooner If I can get to a "Real" computer}

[teslaalset]

I've made a draft simulation in Femm V4.2 to work out Thane's model.
This could serve to better understand the principle.
In this first setup I used only one magnetic material : pure iron.
The diameter of the core of the primary is half of the diameter of the secondary coils.
The legs square to the primary coils are half the size of the primary coil core to allow for early saturation.
Thickness of the core is set to the width of the secondary coil cores.
The Femm file (Thane3.zip) is attached in case someone else want to play with this model.

It's just a first attempt using pure iron with magnetization saturation on.
If time allows I will write a lua script that simulates a full sinus period with various loads.

The example results below indicate flux flow in case through all coils flows 200 mA of current.
All coils have 100 windings AWG20.

[broli]

I've made a draft simulation in Femm V4.2 to work out Thane's model.
This could serve to better understand the principle.
In this first setup I used only one magnetic material : pure iron.
The diameter of the core of the primary is half of the diameter of the secondary coils.
The legs square to the primary coils are half the size of the primary coil core to allow for early saturation.
Thickness of the core is set to the width of the secondary coil cores.
The Femm file (Thane3.zip) is attached in case someone else want to play with this model.

It's just a first attempt using pure iron with magnetization saturation on.
If time allows I will write a lua script that simulates a full sinus period with various loads.

The example results below indicate flux flow in case through all coils flows 200 mA of current.
All coils have 100 windings AWG20.

That's a cool idea. Since the BTT follows known physics "laws" the simulation should give some interesting results.

[woopy]

Hi all
Hi Thane good to see you and your great work back here 

After seeing the post of Skywatcher and looking at the FEMM simulation of Teslaalset i have tried something.

Pix 1 is the setup with one ferrite toroid in the middle. The circuit is JT standard with L1 and L2  at 11 turns. The L3  (1.2 ohm and 43,3 mh) is wounded joining the interior and exterior ferrite toroids.

Pix 2 shows the trace with a very nice ringing effect. Pic to pic more than 300 volts and 11.7 khz

Pix 3 is the power in (1.07 volt at 35 ma )

Does it mean that this ringing effect shows that the BEMF of  L3 stays in the outer toroid bouncing back and forth, without disturbing the inner toroid?

Thanks for your attention

Laurent

[woopy]

Re-hi at all

To complete my previous post ,i rewounded another JT exactly the same size as the first one (11 turns for L1 and L2 ) . And L3 with 0.8 ohm and 20.5 mh.

But this time without the second toroid

Pix 1 the setup

pix 2 the trace. As you can see for the 300 volts, there is a soimple peak and no ringing at all

hope this help

good night

Laurent