another small breakthrough on our NERD technology.

[poynt99]

Poynt99,

Rosemary's claim is COP = infinity, not COP = 1.5, a stopped test cannot produce results above COP = 1.5, a continuous test will produce results until infinity or the RAT circuit uses up all the juice.

If you are not testing the claim of COP = infinity, what are you testing ?

RM

I guess you couldn't find a quote. See? Helps if you're on the same page. 

[evolvingape]

I guess you couldn't find a quote. See? Helps if you're on the same page. 

I never looked for a quote, it was clear you had chosen to respond to my post by dictating a condition in my response that you knew did not exist. Therefore gaining some illusionary advantage in the exchange. If a quote does exist then post it.

The experimental test must test the claim, if it does not it is a test of something else and resolves nothing.


Are you testing COP = infinity in a continuous test against a control, or are you stopping the test at a certain point and declaring a winner ?


One is a test of the claim, the other is a test of something else.



RM

[TinselKoala]

Oh come on. You are arguing over how many angels can dance on the head of a pin.

There is an extremely simple and, one would think totally obvious way for Rosemary to show COP = Infinity.

Start the thing up, take some measurements, make tea and oxtail soup.... then UNPLUG THE BATTERY. Does it continue to run..... or not?

[TinselKoala]

@.99:

I had an interesting "adverse event" earlier. I was at a load oil temp of over 97 degrees C, and fiddling with the FG offset trying to find a setting where both Q1 and the Q2 stack were on alternately, to see if I could drive it even hotter. I was monitoring the current from the battery pack with a cheapo DMM and it was showing about 250 mA with the spiky signal I showed before. and by careful adjustment of the FG offset and amplitude I could get it to go to 450 mA or a bit more. So... I did, and then the ampmeter suddenly started showing more and more current, until about 4 amps indicated, then .... flatline. I scrambled to disconnect power and try to figure out what happened.
Forensic diagnosis: the Q1 mosfet failed due to too much gate voltage and/or overheat, and shorted out the entire stack-- but protected the Q2 mosfets by doing so. Apparently the surge also caused an open fault in the load inductance as well, because it no longer has continuity. I haven't yet opened the insulated container to see what's up with the load... I wanted it to cool off to see how long that took. Right now at 2214 it's still at 40.6 degrees, and the failure happened at 2010 with the load at 96.5 degrees C.
The board is fixed; I still have a few 830a's left to burn. The load... I was kind of fond of that little transformer. I don't know if I have an equivalent inductance handy, to resume testing.

I was a bit disappointed though. There was no smoke or fractured mosfets.

[evolvingape]

Oh come on. You are arguing over how many angels can dance on the head of a pin.

There is an extremely simple and, one would think totally obvious way for Rosemary to show COP = Infinity.

Start the thing up, take some measurements, make tea and oxtail soup.... then UNPLUG THE BATTERY. Does it continue to run..... or not?

The capacitor test for this has already been done by a few people including Rosemary and the circuit quickly consumed all it's energy and stopped running. In other words underunity.

Rosemary is claiming the battery involvement is significant for about half the waveform when it is connected to the circuit, and so it must be included in a test of the claim. In all probability it will just extend the time before the same result as the previous capacitor test.

Each of the proposals I outlined 1 to 5 tests a particular variable. If apparent overunity is seen in any of them, it will indicate where it is coming from.

RM