Claimed OU circuit of Rosemary Ainslie

[TinselKoala]

Well, I think several things. First, I detect a certain restrained but still evident commonality in style and substance. You might be able to put swimming goggles on a troll but it still will be the same old troll.
However, trolls occasionally do have good ideas. Who they steal them from, I'll never guess.
Thanks to fuzzytomscat, I have finally seen something interesting in this circuit. Physically interesting I mean, rather than psychologically interesting.

Well, not exactly Physical, either--that is, nothing surprising wrt to Physics. But certainly something that anyone in a 2-year electronics technician AA degree program will encounter, at some overpriced third-rate commercial college trade school with crappy workbenches and surplus gear.

But it's certainly something no rational person would try on purpose. Let the Earth and fuzzycatscat's bonded ground third wire act as the negative battery wire to your Ainslie circuit. (Why do we keep calling it that? It's a basic mosfet audio amp.)

Please: Only crazy people try this experiment (hazards to life and equipment):
Unplug the negative wire from your battery, I am saying, and let the scope's ground return lead, attached just as in the Ainslie circuit, provide the connection. Run a ground wire from the water pipe ground to the negative battery terminal. No connection to the negative input to the Ainslie circuit, except the scope probe ground. Now look at the signal, and compare with and without the Battery.
You will not see this behavior if your system is isolated, properly grounded, and connected in the proper order.

Which is why I did not see it until now, and others may also not be seeing it.

It's not OU, it's just what fuzzy says: It's power coming in from the utility wiring through the system ground.
If you were listening to this signal on audio, it would probably sound like a really loud bad buzz, and you would unplug stuff right away.

[Yucca]

It's power coming in from the utility wiring through the system ground.

So a really high impedance signal source not capable of any real work?

[TinselKoala]

So a really high impedance signal source not capable of any real work?

Evidently. I am taking a time vs. temp profile right now, and so far (a little over an hour) I have reached 37.1 degrees, at 22.9 ambient. 4 percent Load on, from 10 v peak FG signal; running battery starts at 25.2 volts.

Compare to the previous raw data sheet, run 1. All conditions the same except for the ground loop.
I'll be posting a pic of the data sheet when I finish.

For now, there are 2 new vids up, illustrating AC vs DC coupling, and the ground loop signal.

http://www.youtube.com/watch?v=9mRVej2cE_A
http://www.youtube.com/watch?v=jZzzMVx6rPY

[ramset]

TK
I've become confused
Glen said this invalidated your results and all testing was skewed
now this quote validating his statement?

FuzzyTomCat  FuzzyTomCat is online now
Senior Member
        
Join Date: Jun 2008
Posts: 229

Ground Loops

Hi everyone,

I sure everyone has had time to digest my claims on "not" using a AC grounging system for DC circuits in the United States.

Some interesting developments and some verification of my statements have been made through testing with a oscilloscope for "ground loops" ........ Please view these new videos from TK on his findings ...... you as he was, will be surprised.

YouTube - Electric OU 10: AC coupling vs. DC coupling


YouTube - groundloop c2 (the best one)

Best Regards,
Glen

[TinselKoala]

Confused in what way?

He was perfectly correct, it just did not apply to my system, since I am doing things right--that is, how I learned it in the "school of smoking oscilloscopes."

But if I do it "wrong"...then I see the phenomenon he was talking about.

If this is the route to actual OU, we're truly in trouble. But I don't think it is--I've done a heat run in this mode and there isn't any real difference at 4 percent ON with the FG. Later I'll do other comparisons, but so far, certainly not very different from the first raw data sheet, #1 run.

I'll post a photo of the data sheet from this run, and I'm at home so I can edit it down for inline posting. Stay tuned.

Oh, and for MileHigh---"PDC" in the context of measurement accuracy, is about like an "RCH" in machining...that is, "Pretty Damn Close", or a "Red C... Hair" which is even closer.

(Is it too drunk to be this early?)