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Author Topic: HIGH QUALITY TPU DVD Video Released from Jack Durban  (Read 412783 times)

Offline Localjoe

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Re: HIGH QUALITY TPU DVD Video Released from Jack Durban
« Reply #990 on: May 31, 2008, 10:15:37 PM »

  Double post

Offline Localjoe

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Re: HIGH QUALITY TPU DVD Video Released from Jack Durban
« Reply #991 on: May 31, 2008, 10:16:56 PM »
Seek passive creative feedback design hmmmm

Offline Grumpy

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Re: HIGH QUALITY TPU DVD Video Released from Jack Durban
« Reply #992 on: June 01, 2008, 06:09:00 AM »
I did check it out.   Why don't you take your own advice?

The real "reality check" will be when gasoline hits $10 in the US...

You can convert an automobile to electric for less than $5k


right on time grumpy, just like clock work.  ;) this routine of yours is getting old, give it a rest

at times the truth draws out those that can only answer with more rhetoric, or silences those who suddenly realize the err of their ways

open your eyes dude  :o i said check out spherics

as for negative "smack", well that's your interpretation. others may see it as a reality check

Offline Mannix

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Re: HIGH QUALITY TPU DVD Video Released from Jack Durban
« Reply #993 on: June 01, 2008, 09:06:00 AM »
@Wattsup

You say in your 5-26-08 post (#957) that the device in the bottom center of the FTPU is probably a microphone. I would submit that is it not a microphone, at least in a conventional sense. The item in the FTPU looks exactly (to me) the same as the item in the center of the MTPU (the one that was cut up) as shown in the attached picture. I suggest that if one can identify the item in the attached picture, then they have the identity of the one in the FTPU. There are other pictures of the MTPU that show the center item. Hope this information helps.


That picture IS a speaker magnet complete with centre pole. Grab a few old speakers and pry then apart.
those two lumps are rivets that would attach to the speaker frame.


What you guys should be seeking is "saturable inductors"  like spherics said...check their function
and see how they might  be able to take a wide pulse and convert it into a short one.


Offline otto

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Re: HIGH QUALITY TPU DVD Video Released from Jack Durban
« Reply #994 on: June 01, 2008, 04:08:50 PM »
Hello all,

@Mannix

here you have it:

1 or more iron cores
copper wires, not much
at least 2 frequencies.

In short: look at my posts in the "fraud" thread!!

Otto

PS: now its out

Offline otto

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Re: HIGH QUALITY TPU DVD Video Released from Jack Durban
« Reply #995 on: June 01, 2008, 04:09:16 PM »
Hello all,

sorry, double post.

Otto

Offline MACEDONIA CD

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Re: HIGH QUALITY TPU DVD Video Released from Jack Durban
« Reply #996 on: June 01, 2008, 05:35:04 PM »
HI 

Offline BEP

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Re: HIGH QUALITY TPU DVD Video Released from Jack Durban
« Reply #997 on: June 02, 2008, 02:00:29 AM »
There are other pictures of the MTPU that show the center item. Hope this information helps.

Just my 2 cents:

I'm almost 100% sure the item shown in the center is the coronal discharge cover of a clean-room workbench air ionizer head.
Other models had single or dual coronal discharge covers. The ones I've pulled from the company junk pile had remote heads but interesting settings of 1.3Hz (for the 6 head setup) up to 35.7kHz for the single head (local workbench only).

The duals alternate positive and negative charge to equalize static charge of the area and prevent dust buildup on the ionizer.

This is probably something the speaker lab had mounted at most work benches.

If nothing else it certainly fits my train of thought.

Offline aleks

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Re: HIGH QUALITY TPU DVD Video Released from Jack Durban
« Reply #998 on: June 02, 2008, 07:16:48 AM »
That picture IS a speaker magnet complete with centre pole. Grab a few old speakers and pry then apart.
those two lumps are rivets that would attach to the speaker frame.
The only problem is I do not see a magnet there - it looks more like speaker driver, without magnet. But then again - speaker drivers can be used as microphones without the need of adding anything extra.

Offline wattsup

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Re: HIGH QUALITY TPU DVD Video Released from Jack Durban
« Reply #999 on: June 02, 2008, 05:30:02 PM »
@JustRite

Thanks for that good photo, but that center piece is his speaker magnet he used to start the MTPU. In this case he actually leaves it on the black box and we do not see a center toroid. When the light bulbs are lit, he takes the magnet in his hands to show the light intensity is going down.

Keep looking and let us know if you see anything else.

@all

While I was looking at the MTPU,  I also looked at the LTPU center toroids again and have realized something that is a bit confusing between it and the FTPU toroid or it is an illusional effect of the video quality.

In the first image ftpu-toroid-wind1.jpg show the toroid and you can see the left coil start defined with four turns then it just bundles. You can also see it on the right side how the wires seem to be very fine, but is this from the camera angle and quality making wind counting impossible.

In the second image Ltpu-toroid-wind1.jpg you can see the winds are well defined on the front but you can also see the bundle "effect" in the background winds. This same bundle effect as the FTPU toroid indicates to me that both FTPU and LTPU toroids are the same and it is only the quality of the images that is creating the illusion of fine wire windings.

In the third image Ltpu-toroid-wind2.jpg is a better Ltpu toroid image that shows well defined winds, We can clearly count 32 turns and the wire gauge anywhere from 16 - 20 AWG. Hard to say which. I would say 18 awg.

My present magoid has approx 144 turns of 29 awg so I will have to change it. Also this new wind scheme to better reflect the FTPU and LTPU toroids will require that I rewind the ferrite and iron powder cores also to do some more testing.

This also means the toroid not having finer wire may be less conducive to reacting to a frequency and hence may cancel the microphone/feedback theory.

More to come.......

Offline BEP

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Re: HIGH QUALITY TPU DVD Video Released from Jack Durban
« Reply #1000 on: June 02, 2008, 06:28:55 PM »
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.

Offline wattsup

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Re: HIGH QUALITY TPU DVD Video Released from Jack Durban
« Reply #1001 on: June 02, 2008, 07:37:51 PM »
@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?

Offline BEP

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Re: HIGH QUALITY TPU DVD Video Released from Jack Durban
« Reply #1002 on: June 02, 2008, 07:58:44 PM »
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  ;D
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.

Offline JustRite

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Re: HIGH QUALITY TPU DVD Video Released from Jack Durban
« Reply #1003 on: June 03, 2008, 08:39:38 AM »
@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.?

Offline BEP

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Re: HIGH QUALITY TPU DVD Video Released from Jack Durban
« Reply #1004 on: June 03, 2008, 12:30:15 PM »
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.