Longitudinal wave research

[Bob Boyce]

Those prices sure make microcontrollers look like the best deal. The Atmel microcontroller chips I use are under $5 each. No need for settable or programmable delay chips when the microcontroller can be programmed directly for timing needs.

If you need a programmable delay and pulse width to use with an existing signal source, you can always use a simple little 8 pin package microcontroller running simple code that can take input pulses and deliver timed output pulses. You can even add some up/down buttons for adjusting delay and duration of the output pulses for tweaking operation either way from the "default" settings that you enter.

Bob

[MeggerMan]

Hi Bob,
Microcontrollers may work but I have not yet seen anyone use one.
It's a pitty there is no such thing as a microcontroller with a built in AD9959, although I suppose you could put the two onto a tiny board and say there you have it.

I have another price quote on the 3D7622 from Datadelay devices themselves:

10 pieces are $32.93 each

Lead-time is 1 week to ship.

Postage is dependant on the service used

$25.00 for EMS which is 3 day delivery

Other wise standard mail would be $5.00

So 4 of these with a AD9959, large LCD display and you have a comprehensive function generator.
Just need to write a program for the uCtrl.

Regards
Rob

[MarkSnoswell]

Today I decided to start my longitudinal wave tests on torroidal coils with wire cores... After 16 hours of tuning I think I have a very simple configuration that has a power gain of 12 (twelve).

Apart from apparently being overunity it's a configuration that by all classical rules should not be putting any power out at all.

I have a very experienced electrical engineer coming over tomorrow to check everything... but I have just done a full calibration on my oscilloscope, tried a replacement set of 4 new probes, rebuilt the test twice (it took 4 hours to tune it the second time), done a complete brute force integration of the waves for accurate power calculation -- and I still get significantly more power out than in

I'll photograph and document after independent check of my setup. But for those of you who cant wait ... It's a very simple setup -- a toroidal coil and a two loop coil core (secondary). The torroidal coil is a continuous loop driven from a single point. About 330 turns of 0.12mm magnet wire with a poloidal ID of 14mm and a torroidal ID of 175mm  -- it's a precision coil made on the lathe as a straight coil and then formed into torroid.

It was the first test of this type on my list to do. It was looking for longitudinal wave induction of current in a perpendicular secondary -- a configuration for which the Lenz law predicts a null result.

It's driven at a fundamental resonance of 7.478 Mhz.
The two loop secondary coil appears to have an impedance of about 33 ohms. I am driving a 33 ohm load for these tests. Tuning involves getting the parallel capacitance (from single drive point to ground and at capacitive couple from signal drive to 90 deg around torroid) exactly right to minimize input current. Residual current is almost pure third harmonic. Input voltage is fundamental sinewave. Output looks like clean sinewave.

With a sine wave drive I get 12X OU. With a square wave I get 1.5X. The poor performance with the square wave is due to high residual 3rd harmonic. This is expected as even with the sine wave input the only residual drive signal is third harmonic ? the square wave is rich in the 3rd harmonic and therefore not as efficient for this configuration.
Tuning to 0.02% is required to minimize the input power -- which implies a very high Q.

Power levels and voltages are resonanble for measurment
Input = 3.4V x 2ma  3rd harmonic current, 1st harmonic voltage
Output = 1.38V x 41ma out, 1st harmonic into a 33ohm resistive load.

That?s it for now. Please keep this confidential to this private group at present. I need to confirm the validity of the result and then do a closed loop test before considering what to do next.

Cheers
Mark.

[Bruce_TPU]

Hi Mark,

Your information on your latest experiment, leaves me speachless.     We look forward to the EE's confirmation of your results, as well as photographs and documentation if all confirms well.

Bob said that there are hundreds of way to "tap" into this power, I am just amazed that you did so, if confirmed, so quickly!   

Heartfelt congratulations!

Bruce

[MeggerMan]

Hi Mark,
This looks very promising and very easy to build, 60cm long spring coil of 1.2mm wire wound on a 14mm former with a couple of turns threaded inside for the seconary after removing from former and bent into a toroidal shape.
Solder the spring ends together to form one continuous loop and apply a sine wave input the the joint.
The tuning looks very tight and I wonder if a lot of frequencies can be explored by carefully going through the whole range from several Hz to 20MHz, could take a very long time.

Its a pity the frequencies and not in the region of the two that SM mentioned: 35.705KHz and 245KHz.
This could be the start of something really big...

Regards
Rob