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Author Topic: TPU Clues  (Read 59534 times)

Mk1

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Re: TPU Clues
« Reply #90 on: August 03, 2009, 09:59:39 PM »
@CD

Did you ever try to make a toroidal "magnetic battery" ?

http://my.voyager.net/~jrrandall/CookCoil.htm

Mark

BEP

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Re: TPU Clues
« Reply #91 on: August 04, 2009, 05:13:26 AM »
the interferance on the TV set .

Sorry. The video interference modulation shown could also be from the square wave output of the Tripp Lite inverter used during those demonstrations.

There are many possible causes and many possible frequencies. One such source are small signal pulse transformers radiating spurious broadband emissions due to an incredibly short pulse duration. If so, there may be two of them and both very close in frequency to each other or same frequency but almost 180 degrees out of phase.

Electronic warfare used to be a hobby of mine  ;)

But then, 175kHz has a special place in my heart.

Mr_Video

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Re: TPU Clues
« Reply #92 on: August 04, 2009, 05:48:37 AM »
Sorry. The video interference modulation shown could also be from the square wave output of the Tripp Lite inverter used during those demonstrations.

sorry, but 60Hz is not the same as 180Khz

and even if it did have a 180KHz oscillator, it would be better shielded to meet FCC requirements .

turbo

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Re: TPU Clues
« Reply #93 on: August 04, 2009, 06:35:56 AM »

WHAT YOU THING <<@marco  you have lost tomuch $ for nothing and still  you dont getit   

ha  ha ha ha ha

You would be the LAST one to find out  :)
I am making great progres ha ha ha

BEP

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Re: TPU Clues
« Reply #94 on: August 04, 2009, 06:44:56 AM »
sorry, but 60Hz is not the same as 180Khz

and even if it did have a 180KHz oscillator, it would be better shielded to meet FCC requirements .

Interlace frequency is a bit less than 60, in the States.

The cover of the inverter was off. FCC requirements would have nothing to do with it. The primary inverter noise would have been very close to 120Hz, not 60. This would split the interlace frames into almost even bars - if the interference modulation was from the inverter switches.

I'm not saying you are wrong - I don't really know. I just don't see how you come up with ~180kHz.

Now if the frequency applied to the full circumference over-wrapping coil was 15734.26Hz and you wanted to 'kick' that wave one direction you would apply a second frequency that was the first divided by pi - not exactly or there may be problems. After all, a toroid is circular.

Crazy sounding, isn't it? I say that every time I do it  :D

Mr_Video

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Re: TPU Clues
« Reply #95 on: August 04, 2009, 07:52:37 AM »
OK, this is how I did it :

a single horizontal line of video (NTSC) is 63.5 uS,
but we are only interested in the visible part of the picture which is 52.6 uS or 19.011 KHz


so, I loaded the picture into a image editor, enhanced the contrast & drew a box around the lines, so one corner started one end of a line, and the opposite corner was on the other end of the same line .

then I simply counted the number of lines that intersected the top OR the side of the box (about 9.5 lines)

mutiply 9.5 X 19.011KHz and you get 180.645KHz


maybe it isn't coming from the TPU, (I would say it's pretty damn likely though), but something in that room is definitely radiating 180KHz and it's harmonics .



MACEDONIA CD

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Re: TPU Clues
« Reply #96 on: August 04, 2009, 03:23:18 PM »
@all

        1,257
   B= -------- * u * H = ?                                                       
      1000000


   FLUKS = B*S = ?

HERE IS  SOMETHING FOR START



innovation_station

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Re: TPU Clues
« Reply #97 on: August 04, 2009, 03:31:43 PM »
intresting 180 pops up right now i posted a video yesterday  about 180 khz... 

here it is ... 

 ;D

ist

http://www.youtube.com/watch?v=CYNEn8llXeU

turbo

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Re: TPU Clues
« Reply #98 on: August 04, 2009, 04:07:23 PM »

Grumpy

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Re: TPU Clues
« Reply #99 on: August 04, 2009, 05:34:31 PM »
Keely claimed that 180kHz was the resonant frequency of "ferromagnetism".

Just because this frequency is there does not necessarily imply that SM was driving a circuit at this frequency.

BEP

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Re: TPU Clues
« Reply #100 on: August 04, 2009, 06:44:01 PM »
My opinion only....

If 180 is from a TPU it is a result not a drive frequency. To much info points to two drive freeks. One around 2500Hz and the other in the high 15k to low 16k range. With these I get a result tone around 4900Hz. The 4900 isn't steady. It drifts in and out about 180 times a second.

I believe the slight vibration reported was this coupling at around 200Hz.

There still may be a third freek. If there was and it was higher yet, the video camera wouldn't record it. Who knows? Maybe the 15-16 kHz was also a result and not a drive freek?

One thing is sure... we need to stop thinking in dipole antenna terms. This is a traveling wave situation and it is going in a circle therefore pi must be a factor.

What do you get when you divide horizontal sweep by pi? About 5kHz.

Grumpy

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Re: TPU Clues
« Reply #101 on: August 04, 2009, 06:53:52 PM »
What sort of the waveform might the 180kHz be to effect the tv screen like we see in the video?

BEP

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Re: TPU Clues
« Reply #102 on: August 04, 2009, 07:20:01 PM »
What sort of the waveform might the 180kHz be to effect the tv screen like we see in the video?

I've made the exact interference pattern while sending CW on 160 meters. Could be almost anything.

Unlikely the videoed TV used a reactance tube controlled horiz. oscillator so AFC with dual diodes was probably used. If so, the interference signal may have been forcing the sweep frequency too high or low. This would cause a periodic blanking and split the frames. The diodes would rectify anything injected. So, a wave form gues is just a guess.
 

Come to think of it... the 180kHz calculated could just be a limitation of the TV circuits. The signal causing it could have been almost anything above the standard retrace. The AFC may have been cutting in at that rate.

BEP

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Re: TPU Clues
« Reply #103 on: August 04, 2009, 07:38:38 PM »
BTW:

This is something that couldn't be done with SS unless you used true mosfets. I would expect true metal-oxide semi-conductor Fets were still abundant during the SM hayday. They aren't now but are coming back into vogue.

reactance tube controlled horiz. oscillator

It is amazing how low you can resonate a circuit by varying the grid voltage on such a tube pretending to be a capacitor.

Grumpy

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Re: TPU Clues
« Reply #104 on: August 04, 2009, 09:58:34 PM »
what if something was retriggering it?

I've made the exact interference pattern while sending CW on 160 meters. Could be almost anything.

Unlikely the videoed TV used a reactance tube controlled horiz. oscillator so AFC with dual diodes was probably used. If so, the interference signal may have been forcing the sweep frequency too high or low. This would cause a periodic blanking and split the frames. The diodes would rectify anything injected. So, a wave form gues is just a guess.
 

Come to think of it... the 180kHz calculated could just be a limitation of the TV circuits. The signal causing it could have been almost anything above the standard retrace. The AFC may have been cutting in at that rate.