HIGH QUALITY TPU DVD Video Released from Jack Durban

[BEP]

More to come.......

No one else sees this? This is one of the reasons I've thrown out the concept of a metallic toroid form. It is not uncommon to use the 'hook' part of the barrier to reverse the wind, even on chokes.

[wattsup]

@BEP

Now that is a good find. Looked at it much closer and it does seem to reverse indeed. Smack dab obvious so no one can see it. So if the toroid does have a reverse wind via that hook ring, this means there are only two of the four wires coming out the center of the toroid that are from the toroid winding. That leaves two of the wires that are coming from somewhere else. This changes the equation considerably.

One question would be under which conditions would someone look to use such a reverse winding toroid in standard EE practice?

[BEP]

One question would be under which conditions would someone look to use such a reverse winding toroid in standard EE practice?

The reverse wind is used to create a bucking field. Yes, I'm still on the crashing wave kick 
Using a bucking field, among other possibilities, is a good way to filter noise out of a DC signal. Normally, a bucking field choke will be wound almost all the way around and then back upon itself in the reverse direction. However, I'm sure the conventional choke isn't made to spin a charged field on two axis 

My version of this has a pancake coil in the inside (no room for iron).

Also notice:
1. on the TPU with two of these they are mounted so this reversing point is opposite to the other toroid.
2. the ampere turns per inch vary - making me think some squeezing is going on here.

[JustRite]

@Wattsup

I would like to suggest another thing regarding the central toroid(s). It appears to me that the same larger white wire that is ?entering? the center of a toroid, is also the same wire that is vertically exiting the toroid. It appears that the white wire is making a vertical ?U? loop, in and out of the center of the toroid. In order to ?hold? the wire in that position, it appears that the wire has been ?potted? within the toroid with epoxy or etc. to hold the wire in the vertical position.

I can only guess as to the purpose of this construction. It?s possible that the toroids are being used as a frequency sensor to ?pick up? the frequency of whatever coil(s) the white wires are connected to. One of the coil(s) could have a ?set? frequency, based on the diameter of the collector coil. The other coil(s) may have an adjustable frequency just slightly higher/lower (i.e. 7.3cps) than the fixed frequency coil(s). Since all coils can ?drift? somewhat from a set frequency, it?s possible that there is some kind of SS differential sensing circuit that uses the frequency input from the toroids to keep the ?adjustable? coil(s) at the necessary differential frequency, of 7.3cps, for example.

Twenty five years ago (or more), someone creating a differential frequency circuit who was more familiar with tube circuits than SS circuits, would have found it much easier to create a tube differential frequency circuit than creating a SS circuit. Today, IC differential amps are as common as water. That may be one of the reasons why SM had a ?hard? time creating a SS differential circuit, assuming such a circuit exists. Obviously, some kind of a circuit is necessary to keep all the coils constantly in ?tune? as the environmental factors change. I would suspect that such a circuit would necessarily be hidden in the TPU, i.e. under the ?box? in the LTPU, and inside the spool core of the FTPU.

Just another idea to put into the ?idea pot.?

[BEP]

If the other two wires entering the small toroid are a simple 'U' shaped loop they would not be for sensing. The reason is any current entering would also exit in this loop. Since the directions are reversed on each leg of the loop the net result will always be zero - regardless of the current in that loop.