Is joule thief circuit gets overunity?

[ltseung888]

Board 113 is unusual in that the COP = 0.1.

Possible soldering problem as some solders were seen that appeared to do nothing?  Might have short circuited something?

[picowatt]

See Reply 552.  That completed spreadsheet is for Board 80.  It has the Average Input and Output Power, the COP and the graphs.  Please study and comment on it carefully.  It will be presented to the Hong Kong Government.

Lawrence,

On my computer, the first Board 80 data you presented is shown in reply #503 as slide 12.jpg and slide 13.jpg.

I looked at the .xls data linked in that post.  There is no output data .xls spreadsheet, and the input data spreadsheet appears to only be a list of the sampled data with no math performed.

So I have yet to find a spreadsheet for board 80 that shows the corrected instantaneous input voltages multiplied by the instantaneous current with the products then averaged for a calculated average input power..

You recently posted a spreadsheet for slide 13 which is the output data for board 80 and it would be nice to see a similar spreadsheet for side 12.

Could you repost a spreadsheet showing the calculated average input power for board 80 using the data from the "slide 12.jpg"?

Thanks,
PW 

[ltseung888]

@TK,

Worried about not reproducing your graph of Input Current crossing the zero axis?

If you have a DC Power Supply, you can easily reproduce that situation.  If you rely on partially depleted batteries, you need much luck.

See the results of different Input Voltages on the Input Current.  I changed the CH2 Vrms display to CH2 Vavg so that the negative sign is much easier to spot.  You can tune until the Vavg = 0.  That will give equal crossing of the zero axis.

*** Board 80 was used.


The Almighty encourages us to learn more with more hard work.  I do not think you made a mistake.  You just did not find the right depleted battery...

[ltseung888]

@All,

It is now clear from the pictures on reply 562 that the Average Input Current can be tuned to 0.  Since the Input Voltage is always positive, we can get Average Input Power close to zero.  The Output Voltage and Output Current are always positive as seen in the many Output waveform graphs.

This means that we can tune the COP to almost any value.  (from large positive to large negative).  This fully explains the DSO analysis results.  It also explains why a rechargeable battery used as Source Input can show increasing voltage (being recharged) and decreasing voltage (being drained).

Everything makes sense.  The 200 Boards from Mr. Zhou are guaranteed to be OU if we tune them with the DC Power Supply!

Board 80 can definitely be demonstrated as OU in front of the Hong Kong Government.

All Glory and Honor to the Almighty.

@PhysicsProf:

You have the Atten and two boards.  You are in the best position to confirm the discussed findings.  Thank you in advance for your efforts.

@PW:

You can see that magic can be perrformed on Board 80 (or any of the Zhou boards).  You can name a COP (positive or negative) and any person with a DC Power Supply can tune it for you.  A lot more will be done on Board 80 in the coming weeks.  Thank you for asking TK to reproduce the "equal" crossing graph.  That triggered my thoughts on the Board 80 experiment.

[picowatt]

The oscilloscope analysis for Board 107.


Average Output Power
12.05105778 watt
Average Input Power
0.009865636 watt

COP = 1221.52

This Board 107 will be carefully studied and preserved.

Lawrence,

I suggest you slow down and focus on just one board and attempt to demonstrate input and output data calculations that support your claim of OU using that one board and data set.

You posted "Board 107 input.jpg" and "Board 107 output.jpg" in reply 553.  Looking at thos captures, there is no evidence of OU.

Yet here in this post you present data that somehow is supposed to indicate that board 107 has a COP=1221.52.

In the spreadsheet that is somehow supposed to support your claim of COP=1221.52, the provided input power waveforms are nothing at all like those of board 107 shown in your reply 553.

You appear to be mixing and matching data and never seem to provide a spreadsheet that shows BOTH the input and output calculations for given set of waveforms.

I would suggest you pick one set of scope captures for one board, post the .jpg's of the input and output power screen captures and the spreadsheets of the calculated average power for those screen captures.

PW