Ronotte's amazing TPU experiments.

[eldarion]

I am also replicating Ronotte's experiment--will post pics when I am finished winding the coil, probably in a couple of days.

Well done Ronotte!  And thank you for posting such a detailed log of your experiments!

[ronotte]

Hi all,

ATTENTION

sorry but I discovered only now that on my document: 2magclahTPU V1.3.1 the par. 6 Tentative power measurement is to be discarded due the existance of too many errors.

In a new release I'll try to make another approach.

Roberto

[Rosphere]

Hi all,

ATTENTION

sorry but I discovered only now that on my document: 2magclahTPU V1.3.1 the par. 6 Tentative power measurement is to be discarded due the existance of too many errors.

In a new release I'll try to make another approach.

Roberto

Thank you for the tip. 

Relax.  It is a living, evolving document.  Some extra 3D graphics in the theory section would be appreciated as well.  Need some help with this?

Rosphere

EDIT: The image below is nearly the idea I had last night.  Now just twist into a ring shape.

[Hoppy]

The power levels in and out look about right for induction 27W input and from the look of the bulbs illumination I would guess there is around 12 to 15W out.  This appears to be quite efficient given the amount of copper in the coils.

[eldarion]

Well, I got the coil mostly wound today.  As promised, a pic is attached.

I noted a couple of "odd" (they may be perfectly explainable with conventional electronic theory) things:
1. When tuning around, if I got close to the maximum output on the collector coil (the centermost 90-degree coil) and let it sit there, the voltage output would start to grow and keep on growing!?!?  This was measured on my 'scope--no cheap multimeters here!   The frequency was around 62KHz.
2. The MOSFETs got HOT (perfectly normal with no driver chips).  But when I went to touch the tab of the MOSFET (I believe it is connected to the drain terminal), I got a nasty shock and an RF burn!  I won't be doing that again!

A couple of details on the coil construction.  The collector coil is 1 turn, and is made of 10 15-strand copper wires all connected in parallel.  There are 4 control coils, each is comprised of 45 turns of 16-ga. speaker wire.  The outer collector has not really been wound yet; as of now it covers only 1/4 of the coil; it is the jumbled mess on one side of the coil in the pic.

I will continue experimenting.  The maximum voltage I got from the collector coil was around 20V peak-peak when I let it sit and build up for about 10 seconds.  Any longer and I though the MOSFETs would blow up!

Any thoughts?

Thanks,

Eldarion