Testing the TK Tar Baby

[evolvingape]

Looking forward to this,

http://www.seabirdadventure.com/seabird/earth-blog/entry/rare-venus-transit-next-week

[MileHigh]

TK:

You know this whole mess of nonsense would make a great exhibit at a science center.  The theme of the exhibit would be how you can get fooled by not understanding what you are doing and by failing to double-check your work with alternative measurements.

You push a button and then observe an electrical circuit show the negative oscillation mode with a live scope shot, a negative power measurement with a DSO, etc.  You push another button and then you observe the same behaviour but this time with a large capacitor powering the setup and you observe the capacitor voltage drop.

Then you move on and push another set of two buttons, but this time it's the equivalent hydraulic circuit.  The same scope and DSO are now connected to pressure and flow rate transducers, etc.

Then you move on and push another set of two buttons, but this time it's the equivalent mechanical circuit.  The same scope and DSO are now connected to velocity and force transducers, etc.

Now that would be sweet, to show the same mistake being made in three different energy domains with approximately the same waveforms.  It would be quite thought provoking too.

MileHigh

[Rosemary Ainslie]

Guys - POST 2692 - upload that waveform PLEASE to keep record.  It's highly significant.  I have NOT been able to repost it as there's some kind of 'control' applied.

Meanwhile here's the post that I wrote.  For some reason my previous post did not take.  And for this contribution I needs must break my silence with respect to TK's work. 

Guys it is simply the most significant result that I have ever seen.  Please scroll  back there and take a long hard look.  We've aimed at this result but never achieved it.  Only smaller less significant excursions into that battery negative voltage.  Amusingly it has not even drawn comment from TK's usual acolytes.  I'm only posting about this because we'll be including this in our own demonstrations.  I freely admit that this was PRECISELY the definitive battery voltage value that we've been looking for and only managed in very small moments and at much smaller values.

Well done indeed.  I realise that this is FAR from your intention - but you've assisted us all greatly in this result - from a circuit DESIGNED by Poynty and - as ever - BRILLIANTLY defined in all its essentials - by Groundloop.  We are all of us always deeply indebted to Open Source.  And while there is NOTHING else of value in this thread related to your work TK  - this experimental evidence is GOLD. 

Thank you TK. 
Kindest regards

Rosemary
I see that we are NOT allowed to upload that waveform?  Security checks?  Whatever next TK?    You'll NEVER put a lid on this one.

added emphasis

[Rosemary Ainslie]

And for those who are wondering which circuit's involved. Here it is again.  Courtesy as ever - the genius of our Groundloop who is quite simply the most brilliant designer I have ever come across.

Regards again
Rosemary

[MileHigh]

TK:

I think that I have finally figured out the explanation for the apparent negative current flow as indicated by the CVR.  This has been bugging me for some time and for all I know Poynt already explained it a long time ago indirectly.  For a while I thought that the current was actually reversing and I was trying to explain that.  Now the answer seems so simple.

Certainly, assuming that you and others concur, this spells DOOM for Rosemary's claim, not that I ever doubted that her claim was doomed before.

It all goes back to our good old friend the wire inductance.  When the MOSFET is switching off, the energy stored in the inductance in the wire (including the CVR) between the MOSFET source and the battery negative terminal has to discharge.  During this discharge you have one end of the wire anchored to the ground potential of the battery and the end of the wire at the MOSFET source is "the end of the EMF whip."  Relative to the battery ground terminal, and working "backwards" or counterclockwise through the wire, the potential increasingly drops as you move along the wire, and is at maximum negative potential at the MOSFET source.  The energy stored in the wire is dissipated in the MOSFET itself.

So, what appears to be "negative current" is really just the "EMF whip" dropping in potential as the wire inductance discharges.  The "far" side of the CVR (relative to the battery negative terminal) is simply along for the ride and that shows up as negative potential on the scope trace.  So this negative EMF due to the wire inductance discharging appears to be reverse current through the CVR but in fact it's not the case.

Does this make sense to you?

So this means that the current never reverses in direction and there is never any energy being returned to the battery.  It's all a fake-out.

In the next posting I will discuss a test to confirm this.

MileHigh