HIGH QUALITY TPU DVD Video Released from Jack Durban

[BEP]

@Wattsup

Before destroying a good core you may want to look into Rogowski coils. At this point I am almost convinced the little toroid on top of the FTPU is exactly that with one variation: center tapped.

Most of the descriptions of the TPU supplied to us fit a Rogowski toroid. If it is, then a TPU is a set of stacked Rogowskis and that little toroid on top is nothing more than a miniature TPU.

In any case I doubt it is a metallic core of any kind.

Cheers!

[Bruce_TPU]

Spherics posted this patent.  It explains what the toroid was for, IMHO.  I suggest you read it and try to understand why SM needed this.  The answer is there. 

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19820016542_1982016542.pdf

Cheers,

Bruce

[BEP]

@Bruce

At this point I have no doubt the core is not a core at all. It should be only a form and will likely contain a horizontal internal winding. The deposited high permeability micro coated skin would seem a resonable solution to reverse voltage. The pdf makes sense to me, especially when the outside winding is a Rogowski style. This would seem to make it extremely fast (low impedance) one direction and the opposite when flyback should happen.

I've been experimenting with ways to eliminate the flyback without active devices.
It is interesting to say the least. The blasted things glow a weird blue @ 6KHz when the lights are out  Sorry to say, it is still an energy sucker but the wrong way.

Unlike a standard current transformer the Rogowski is a voltage source instead of a current source, like a C.T. Basically meaning it 'should' be a constant voltage source.
I have not proven that idea to myself yet.

They are known for having a verly low voltage output but if you want more voltage you just increase the current going through the middle -or- the speed -or- put a bunch of them on the current carrier and wire them in series -or- rotate the current going through at a higher velocity. Sound like increasing the number of short wires idea?

Their winding design is counter intuitive to most. Tight winds are not good. These are not affected by bi-polar magnetic fields unless the windings are too close. They are made to make use of the unipolar magnetic field around a current carrying conductor.
My thought is they are the same as all other inductive coupling circuits. Reverse action should also work.

JLN has past work on 1 atmosphere glow discharge (my mention of glowing coils above) but I don't think it applies to a correct TPU.

[slapper]

@wattsup: Thanks for the heads up on the sharp edges on the cores.

I'm sorry, but I can't see SM winding those toroids. They are out of a product that he had available to him for gutting or he got a hold of them off the shelf. The most he may have done is remove some of the wraps.

There are wedges across the inside diameter of every exposed toroid. Do we assume that the wedges are made of plastic or some other material. I suppose we can give W. C. Magnetics a call on that one.

The toroids are loosely wound, as BEP has mentioned, and appears to me to be wound in a common mode fashion.

Common mode cores are, most likely, going to be made from different materials or material structures/alignments as opposed to 60Hz power transformer cores and different from switching power supply cores. The color of the coatings usually indicate what type of core they are but could vary between manufacturers.

Getting a hold of toroids that SM used would help.

Anyway, here is another common element between the TPU's:



It appears he is using that 2 conductor molded cable, again, wrapped all the way around the perimeter of the LTPU. Not clear if this is sectioned off in quadrants or not.

Is there a consensus whether this cable he is using is lamp cord or speaker cable? Looks to me like lamp cord.

Anyway, thanks again for the indulgements. Take care.

nap

[wattsup]

@Bruce_TPU

I looked over that patent with thanks. It is a great idea for pulsing without using discrete components which has always been my main concern with these TPUs. But the problem is I cannot see SM working away a winding the toroid cores with ultra thin 1-2 micron films. When you consider the smallest particle visible to the human eye is around 40 microns, how could he have made such toroids. Rise times in the patent are also very fast, I doubt the TPUs are using such fast pulsing times. I think the final nail on the coffin is that the toroids in the FTPU and LTPU are identical, so identical that it is doubtful that anyone could manually make these so precise and so identical without it being part of a real industrial assembly line type manufacturing process. This leads me to conclude that the toroids have to be off-the-shelf. It you look at the photo below, you will also see that the center of the toroid is epoxy filled. You may also notice the holes I was talking about.

@BEP

Too late. I have already drilled the core. Just jokin. I will wait and check this again and again before I try anything. Damn it. I could swear there are holes in the toroid.

@slapper and @EM

As you know, I am using VirtualDubMod and at the 400 zoom level, the TPU is barely observable because it is mostly off the screen at that zoom level. I just found on another Forum with a thread that indicates by using the Filter called Null Transform, you can change the standard 0:0 x/y (upper-left) starting coordinates to where you want and this now puts the TPU smack dab on screen center at 400 zoom. lol WOW so you can then do the usual but much closer.

@EM or others

About the @EM capacitor, (coined because @EM was the first to see it), can you find any picture of such a capacitor in real life. Can you see the capacitor in question on the following web page?
http://capacitor.tedss.com/CapacitorTypes/VisualGuide.asp

I need to know what you think it really looks like because I think there is an identical one behind the toroid and need some real perspective on it.