Rosemary Ainslie Quantum Magazine Circuit COP > 17 Claims

[Pirate88179]

I object to Ms. Ainslie's fight against reality and malicious behavior.  I don't wish poor health on anyone, not even the blatant fraud Wayne Travis.

The video comes up private.

Mark:

It is funny you mentioned the both of them as, I was just thinking as I was catching up here....wondering what might happen if Rose and Wayne got together?  Possibly, we might get a hydraulic powered heater that is clearly overunity.  Of course, it would need to be pre-charged and, you would need Roses's special knowledge of mosfets to replicate it but...it might be incredible.

Bill

[MarkE]

Edited.... sorry.....

Ainslie cites 8.64 microHenry for the inductance of her load in the Quantum-17 magazine article. Mine actually measures much more than that.... it reads 60 microHenry on my ProsKit meter.....

Again, I am skeptical of Ainslie's reported measurement, since we didn't see her making it and it seems implausibly low to me.

Yes, that's right.Yep, I can use the 2000 mV scale on the voltmeter and get a few more digits of precision. The board has testpoints specifically for the DMMs but this requires me to make up a couple of patch cords and I just haven't gotten to it yet. Perhaps when I do the higher-inductance runs I'll do that. Actually I'll use a third DMM and leave the present two where they are.

When the MOSFET turns off the Ainslie circuit did not provide a discrete path to continue the inductor current.  This left the energy in the magnetic field to charge the local capacitances, including the Miller capacitance between the drain and gate.  That would tend to slow the rise time making the MOSFET absorb the stored inductor energy.   It's better that it did so, rather than allow the inductor to flyback to a destructive voltage.  At 2.4kHz, 24V, and a nominal 12 Ohm circuit resistance, the total flyback power is about 42mW.  In your circuit it is more like a quarter Watt.  If you are careful, you may be able to distinguish temperature rise between operation at the low duty cycle with and without a good Schottky or ultra fast diode across the resistor: anode to the MOSFET drain and cathode towards the power supply positive lead.

[MarkE]

Mark:

It is funny you mentioned the both of them as, I was just thinking as I was catching up here....wondering what might happen if Rose and Wayne got together?  Possibly, we might get a hydraulic powered heater that is clearly overunity.  Of course, it would need to be pre-charged and, you would need Roses's special knowledge of mosfets to replicate it but...it might be incredible.

Bill

I think that "incredible" is a good way to describe it.

[Tseak]

...wondering what might happen if Rose and Wayne got together?  Possibly, we might get a hydraulic powered heater that is clearly overunity.

No you'd just get steam and even more words

[TinselKoala]

When the MOSFET turns off the Ainslie circuit did not provide a discrete path to continue the inductor current.  This left the energy in the magnetic field to charge the local capacitances, including the Miller capacitance between the drain and gate.  That would tend to slow the rise time making the MOSFET absorb the stored inductor energy.   It's better that it did so, rather than allow the inductor to flyback to a destructive voltage.  At 2.4kHz, 24V, and a nominal 12 Ohm circuit resistance, the total flyback power is about 42mW.  In your circuit it is more like a quarter Watt.  If you are careful, you may be able to distinguish temperature rise between operation at the low duty cycle with and without a good Schottky or ultra fast diode across the resistor: anode to the MOSFET drain and cathode towards the power supply positive lead.

In some of the Ainslie claimed schematics for the Quantum-17 circuit, there is a diode shown, and in others there is not. The original article in the magazine did not have the diode; by the time of the IEEE submission it is included; the Grey Box has a diode installed ready to be patched into the circuit as desired. I don't think the diode in the Grey Box is identifiable; the "EIT" paper schematic shows the diode and the parts list says it is 1n4007, but clearly the diode in the Grey Box is not a 4000-series rectifier, it is too fat for that. It may be a 1n58xx or a 1n54xx Schottky or almost anything else. I've used my favorite ultrafast, the MUR1560, here on some of my Ainslie explorations.

In my 2009/2010 work I showed charging caps and external batteries using the recirculation diode. More recently, in my Magnetic Levitation demonstration apparatus, I use essentially the same circuit, a highside inductive load on a mosfet driven by square pulses to its gate, to drive the Levitation Coil, and I showed the system with and without the diode across the load.  For this I used an RL30A diode that I pulled from a TV chassis. There is a marked improvement in the performance of the levitation system as well as a much  _cooler running_  mosfet when the diode is used. Without the external diode, apparently the energy of the inductive spike and ringing is dissipated in the mosfet, very wastefully.  I seem to recall that the Levitation Coil itself, corresponding to the "element resistor" in Ainslie's kludge, also runs cooler with the diode in place, but I'm not swearing to that at the moment.

http://www.youtube.com/watch?v=xkiGTWODERo