Acoustic magnetic generator.

[gyulasun]

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The input current consumption is "0.5uA" via Barium Titanate output current  maximum achieved 500uA from output of another bifilar coil.That's estimated 1000x ou in uWatts.

Magnetic Resonance Amplifier using Barium titanate ver 1.0
http://www.youtube.com/watch?v=MbQJexS4M4k


If anyone know of any signal generator circuit or I/C which uses less than 100uA current and able to produce around 18khz.Please do advise me so that i'm able to demonstrate a close loop system to blink led forever at least.

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Hi magpwr,

You have interesting results for sure.     

Luc (gotoluc) has built an LC MOSFET oscillator which run at 20 kHz and drew 14 uA from 3V DC  i.e. 42 uW input power, here is his link: http://www.overunity.com/8892/self-running-coil/msg235133/#msg235133    He used an 1 Henry coil and tuned it with Neo magnets, the capacitors for the oscillator were the MOSFET interelectrode capacitors.  Later he managed to reduce power consumption : http://www.overunity.com/8892/self-running-coil/msg235505/#msg235505    I cannot recall schematic but he used two windings on a toroid, one of them was in series with the drain and +power supply input and the other coil was directly between the gate-source pins of the power MOSFET (IRF640), that was all for the oscillator, no more components.

Here is another oscillator which needs no toroidal coils of 1H but uses 10 MOhm (and 22 MOhm) resistors and two MOSFETs in a normal astable multivibrator:  http://discovercircuits.com/DJ-Circuits/astable.htm     of course the 22 MOhm values should be changed to get your oscillating frequency needed.

Off the shelf circuits are also a possibility: http://touchstonesemi.com/wp-content/uploads/2013/03/TS3003PB-r1p0_Final-Mar-13.pdf

Good luck for looping! Make sure to use some voltage or current limiter means in the feedback loop  to prevent a runaway situation.

Gyula
 

[synchro1]

Quote from tim123:


I found two main resonance points - no matter the arrangement, at about 100KHz, and 10MHz. 


What´s wrong with tim123´s experiment-  He´s way outside the acoustic range!


Magpwr´s at 18khz, well inside the acoustic range. 


Mgpwr reports a COP of 1:1000. He goes on to say in his final video statement that watts amount of OU power may be recovered by wrapping directly over a Barrium Ferrite magnet, with a Barrium Titanate fragment as a catalyst.

[verpies]

I know the multimeter do have it's limitation especially at low current.

The majority of the limitation is not low current but high frequency.  (even as low as 1kHz).  See this and this video.

Your experiment is not measured properly. You cannot multiply AC Volts by AC Amps and expect to obtain average Watts - that calculation works reliably only for DC.

I would appreciate if you measured input voltage and current across a 1Ω current sensing resistor (non-inductive!!!) simultaneously with two channels of your scope.

The output voltage and current can be measured a similar manner ...or with a brightness of an incandescent light bulb with a straight filament (e.g. from auto dome light) and sensed by a PV cell in a dark box (calibrated with DC).

0.5 micro Amps x 4.5volt at input = 2.25uW estimated output power achieved 4.5mW

You cannot do that with non-DC !!!
Finally, you cannot draw any COP conclusions from the fact that the power output does not affect the power input - even if these power levels are measured correctly.  Relative power levels don't mean much - only absolute levels do.

[verpies]

I found two main resonance points - no matter the arrangement, at about 100KHz, and 10MHz. 
He´s way outside the acoustic range!

No, 10MHz acoustic waves are common, e.g. in your doctor's office.
10MHz only is not in the human audio range.

[Google]

@ all on this thread,

Please check figure 9 on the page http://philica.com/display_article.php?article_id=219

Its quite similar to what is being done on this thread, the piezo acts as a variable capacitor due to parallel vibrating plates across the piezo crystal plate in the middle.

Dr Turtur has given a mathematical explanation for extracting ZPE from this circuit on the same page.

Please comment.

Best,