Claimed OU circuit of Rosemary Ainslie

[MileHigh]

Hey .99:

Thanks for the great work with PSpice yet again.  I am going to have a good look at the plots in detail another day.  The old brain wants a break!  But I am having FUN, I hope everybody else is too!

MileHigh

[poynt99]

You bet MH

Just doing what I can to help find the complete answer to this little, yet intriguing mystery.

Will we get an admission at least that the data captured so far is not a true representation of actual values? I'm not sure, but it would be quite difficult to refute what has been brought to light.

Will Glen go over his setup and make the improvements I've suggested and implemented myself? Not sure, but again there are a few things that simply can't be refuted. Should he decide to go on without making the necessary improvements, he will likely never obtain a positive power dissipation figure for the MOSFET, nor an accurate POS calculation.

I have gotten close, but I still have yet to do a run with my latest grounding improvements. Stay tuned...

.99

[Rosemary Ainslie]

You bet MH

Will we get an admission at least that the data captured so far is not a true representation of actual values? I'm not sure, but it would be quite difficult to refute what has been brought to light.


.99

I take it that you're referring to your work here?  Poynty?

It would be so nice to see Fuzzy's work replicated - or for that matter, soemthing that is more like the Quantum circuit.  But if you want to continue a discussion and draw conclusions from your own variation of this there's no-one to stop you.   Personally I'm enjoying the debate.  But it would be nice to get back on topic.

[poynt99]

Latest run with the current star point grounding:

POS = 1.588W
PIM = -0.435W
PIL = 1.977W
PIS = 0.046W

TRAA = 7ºC

The POS is almost right where it should be, but there's still that pesky negative power in the MOSFET. It's clearly a trade-off between the load resistor power and MOSFET power that is the issue. Not there yet it would seem. 

.99

[poynt99]

Based on my theory of what's happening in the real world circuit to skew the alignment of the Drain and Source voltage wave forms, I tried a simulation.

There is sufficient trace to begin to see the effects I'm seeing in my wave forms.

.99