Giantkiller moves forward into Full Heterodyning.

[aleks]

@Aleks
Ultrasound velocity in steel is around 5920 metres/sec as a longitudinal wave and around 3400 m/s as a transverse wave. It won?t travel around a steel ring but will bounce around the inside reflecting off the sides, the energy will be attenuated in the process. If you do want the sound to travel around the ring (bounce around) it would be possible to do so from the outside circumferential surface not from the face as per your drawing. A ?normal? transducer in the location indicated would bounce the beam backward and forwards thru the side of the ring.
But I don?t see how anything useful could come from ultrasound this way, unlike what may happen with magnetic flux in a PMH, ultrasound attenuates significantly.

While I agree that transducer positioning offered by me may not be optimal, I do think that even such positioning will push the wave around the ring. One may use vertical ring or square-profile ring for better results.

I do not agree with your using of term 'ultra-sound'. Proposed frequency lies in the audible range, and that guarantees that no considerable attenuation will be taking place (it's too low to be attenuated considerably, especially in a non-viscous substance). It is also important to note that iron couples to air badly and that means energy transmission from iron to air will be minimal (tuning fork is ringing for long even being coupled to a wooden resonator).

And of course I was talking about "inside" ringing and longitudal waves mainly: there is little sense in having energy go outside the ring.

[giantkiller]

@bhaas,
I have. but not strong enough. Checkout the xr2206 spec sheet. You need an interface buffer between. lm324 will work if you have opamp experience.

http://www.flixxy.com/helicopter-cable-inspector.htm

--giantkiller.

[PLUTOSBONE]

While I agree that transducer positioning offered by me may not be optimal, I do think that even such positioning will push the wave around the ring. One may use vertical ring or square-profile ring for better results.

I do not agree with your using of term 'ultra-sound'. Proposed frequency lies in the audible range, and that guarantees that no considerable attenuation will be taking place (it's too low to be attenuated considerably, especially in a non-viscous substance). It is also important to note that iron couples to air badly and that means energy transmission from iron to air will be minimal (tuning fork is ringing for long even being coupled to a wooden resonator).

And of course I was talking about "inside" ringing and longitudal waves mainly: there is little sense in having energy go outside the ring.

maybee this should be considered on another new thread aleks if you lead the way i will follow.
the speed of a magnetic field can only reach mac 1 apparently so we are talking air not iron. Vortexing air carries moisture, water vapour it is this that starts the traping of the ether (plasma, magnetic) field. 
[/quote]

[bhaas]

Well I tried to make a simple one and screwed that up.
My speaker wire wasn't stranded like I thought it was, but
I didn't figure that out till my third coil I wound so I winding.

Long story short, I got nothing out nowhere. I started with 9v
at 3.75khz and no volts anywhere. I might have wound them
wrong to begin with. I used 12' of wire, folded that in half and
started winding. Would that cancel out everything?

Here's a pic.

[giantkiller]

What you have there is what alot of other people have done.
I don't wind back and forth. Wind in one direction then 1 loop back and wind again. And yes you have a coiled mess there. Think about the pulses go only 1 way. Check out Tesla ionizer circut 568177 and the 382282 patent. In fact, read all of his patents. That is cheaper than buying equipment.
If you can't dig deep with your mind, then you're just making doorbell circuits. And that is a waste of time.

You could clip the loop at the end, tie the pairs together and get 2 coils. But they still go back and forth. Slow down. All the stupid stuff has been done already.

--giantkiller.