user TURBO?s replication of Steven Mark?s TPU ?

[Grumpy]

Does anyone have plotting software that can do a FFT (fast Fourier transform) of three frequencies?  Signal analysis? Graphing calulator?

(I have Mathcad, but not at my current location.)

I'd expect to see something kind spiky - like this: (1st attachment)

Here is a freeware freq analyzer - pipe your 3 audio freqs in and see what the hell is going on:

[Superman]

X or Mannix... does 3 6 9 ring a bell, or multiples of 3... for your frequencies? Just curious.

[ronotte]

Hi to all,
I'm shure that many of us are thinking about coils geometry & interconnections. If it may help here is my first tentative solution I would try to start with.

@Dave
Am I right on this design?....may I proceed?
Thank you very much for any help you could supply.

[AhuraMazda]

Stefan,
Thanks for clarifying the coils issue. I also think your idea in your second drawing is good. But, are you proposing 2 different approaches or are you suggesting these coils will be placed on top of one another? The reason for  my cofusion is that you have output coil in both drawings.

Grus

AM

[CTG Labs]

Ronette Hi,

The drawing is good and is how one of my TPUs is wound.  However may I recommend having the coil wires all outside so you can change the configuration after the thing has been taped up!

There are many ways to wind the TPU, SM built over 300 versions, many were thrown away and the best designs kept.  It was a process of ellimination.  So please do not pay too much attention to the coils, take it as a "way" or a "loose" idea.

The main focus is the 3 frequencys.

Can I just say to everyone.  I can see that no one can see why the mix of 3 frequencys can create this anomalous amplification effect, so instead everyones brains focus on the coil design instead.  THIS IS A MISTAKE.  Please do not start again ignoring the main FACTS because your egos cannot accept the fact that you cannot fathom why mixing 3 frequencys should work.  Ego is the biggest problem and people end up building things to what their own knowledge and logic tells them, this is a big problem for most people.  YOU SEE already I am telling you it is 3 frequencys to mix, and everyone wants to know about coils instead.  I wound my coils randomly, they are not designed with anything special in mind.

Before everyone was ignoring the kick and making up thier own minds.  PLEASE DONT DO IT ALL OVER AGAIN.

THE KEY IS THE 3 FREQUENCYS, DONT TRY AND UNDERSTAND IT, JUST USE THE INFO.

You cannot guess how this works.  If it followed normal laws it would have been found long ago.  We are dealing with unkowns, so thinking about why mixing 3 frequencys is special and where the energy comes from will only serve to drive you mad.  All you can do is bare it in mind and get building!


Regards,

Dave.