standing wave coil frequency

[ltseung888]

Even the best digital scope will capture inaccurate data if it's using only 2bits of its A/D converter

Your scopes have 8 bits of vertical resolution, so they are theoretically capable of capturing up to 256 levels of voltage.
It's just a matter of setting the vertical sensitivity (analog amplification)  appropriately to the signal amplitude.

I played with the probe settings and the scale settings to get more sensitivity.  Here are the results.

I look forward to your comments and analysis.

*** All data are stored in overunityresearch.com.  The most likely correct one is shown here.

[verpies]

I played with the probe settings and the scale settings to get more sensitivity.  Here are the results.
I look forward to your comments and analysis.

A little better this time:

ADS00042 Ch1: 99 levels (77% of 7 bit resolution, 39% of max resolution)
ADS00042 Ch2: 35 levels (55% of 6 bit resolution, 14% of max resolution)
ADS00046 Ch1: 43 levels (67% of 6 bit resolution, 17% of max resolution)
ADS00046 Ch2:   7 levels (88% of 3 bit resolution,   3% of max resolution)

...but the sub 3 bit vertical resolution of the data captured on Ch2 is still unsuitable for further calculations.

7 levels of Ch2 constitute only 3% of your scope's maximum vertical resolution, and that multiplied by the respective 17% of Ch1 yields less than 0.5% power calculation accuracy that would be possible if both channels were taking advantage of their full 8-bit max resolutions.

Also, the summing of the instantaneous power values (Ch1*Ch2) in column E, does not yield average power. 
In this case the summing corresponds to integrating power and the result of this operation is energy.

I don't know if your intention was to calculate the In/Out power of the DUT or its energy. 
In case it was the former - in order to obtain average power, the formula in Cell E11253 should be =AVERAGE(E3:E11252)

Of course dividing output energy by the input energy is also valid and meaningful - I just don't know if this is what you had intended.

[ltseung888]

Experiment on Jan 7, 2012

This experiment focused on getting the best sensitivity from the Atten Oscilloscope.  It was different from others focusing on getting resonance.

Here are the results:


Hope this provides better sensitivity or more accurate calculations.  The future experiments may focus on both tuning and senisitivity.  I expect the more accurate results to confirm Output Power greater than Input Power also.  The raw data file is provided here.  With the raw data, I can get the average, the total positive only values etc.  The analysis of the Standing Wave will be much more meaningful.

Looking forward to more valuable comments.

[ltseung888]

Experiment on Jan 8, 2012

This experiment used two 1 ohm resistor connected in series as the current voltage for both Input and Output.  Thus for comparison purposes for COP, we do not need to do the division first.

The Output Power waveform has both positive and negative parts.  We can interprete the positive power as power going out to do useful work.  The negative power is the feedback.  For a perfect standing wave, the positive power is equal to the negative power.  Thus the net power required to maintain a standing wave is zero.

In this particular experiment, the average output power is negative.  This may be interpreted as more power is fed back than consumed.

See the data below.

I believe the csv files are now good enough to provide the needed COP (mean) calculations/estimateions.

Praise the Almighty.

[ltseung888]

The Input and Output xls has been updated with analysis.

The COP from average is 2.2.

The Output Power average value is negative.  That implies feedback is higher than supplied power.

In addition, both the positive and negative areas of the Power Curve are much higher than those of Input.  This implies that we must examine such values when we deal with Standing Waves or similar.

More details will be available at overunity.com under the ltseung888 bench.

Overunity or Lead-out energy is confirmed by such results.