As Echo rightly pointed out, hard drives are now fixed and software patched so live data for the US including the calibration of the V1.3 cells and some data for the Concentric Calorimeter is being posted as well as back data from the EU.
Switch Polarity
In a conversation with Celani this week, he said – switch the polarity on the wires, it improves the effect. Effectively an “alternating DC” – something about electron migration and thermal gradients. Other research have signalled that the rising edge of a change is important.
What kind of circuit should be employed and what rate of polarity switching. Any ideas?
Comments
There's 250mw of power going to the CuNi wire. It was twice that for a small while but then down to 250. I'm not sure if that's intentional or some bi-metallic reaction with the CuNi??
Indeed it's very interesting to watch the resistance.
Again (I think I've already written something like this in a few occasions in the past months), I believe that such important events should be announced in advance through the blog so that people know about them and can prepare in advance to follow them in real time.
I must have missed the acetone experiment. Sorry about that. Sometimes life gets in the way of science :)
The data is not updating for me and the most current data I can get is yesterday afternoon.
Operation of the data monitor still has some mystery for me.
It seems to have changed a bit from when we first started. I do however really LOVE that you can highlight the waveform and get a reading out of it. If that feature has been there all along and I've only now discovered it then I feel even more dumb.
quantumheat.org/.../...
I saw the net increase in power too was going to comment on it.
I don't think it would hurt anything to get it 8 hours of on time. That way we can be sure everything is stabilized and get the nominal values for both pressure and resistance.
Would it have still done that at a stable power input? I don't know. Advice?
I believe it would have and moreover, we had to wait quite some time for the first cells to start to show excess power. Some may have discounted that excess power, but I'm not one of them : )
I assume that the reason for the power cycling of the CTC is to try to trigger a reaction. It doesn't seem to be working so far. I wonder how long you will continue to try that?
Is it possible to let it just run at/near the critical temperature for a couple days? I'm keenly interested in the nominal value of the resistance and it's slope. It would also allow data collection on the pressure constancy.
I had fun making a video of it!
www.youtube.com/.../
View Test CTC: Air Jacket Test
06/07/2013 15:25:00 06/07/2013 16:00:00
Thanks so much for taking the time to answer. I remember we had those issues with resistance going through the roof as current approached zero but the odd thing about this is that the next sample in time has values even smaller in current and volts and the resistance calculation looks fine.
Perhaps you are right about some odd thing with averaging values over time.
That still leaves the question of why the calculation was done wrong. We will examine whether it is in the readings themselves, or in the averaging of the readings.
The HugData calculates 15.2068 while my calculator gets a different value. Very odd. (R=V/I)
The Geiger Counter also shows a 2x increase shortly after.
Date Current (A) Voltage (V) Power (W) Resistance (Ohms)
Output Power (W) Geiger Counter (V/V0) (Norm)
2013-06-06 18:57:30 -0.0021 0.0171 0 8.1461 10.7414 0.15
2013-06-06 18:57:00 0.0035 0.0585 0.0007 15.2058 12.8428 0.44 (resistance 16.7142)
2013-06-06 18:56:30 0.0686 0.5444 0.0428 7.978 15.6008 0.43
2013-06-06 18:56:00 0.1453 1.1442 0.1662 7.8761 19.8799 0.43
Got it I had to be logged in as a member - problem solved.
Circuit added for reference if reading post #75
@74 Ecco. Gives the output waveforms of a simple ‘single-end push-pull switch – I do not think a ‘H’ double end switch is required here – but I can do a circuit for that also if desired. Power input is simply controlled via rep. rate and/or voltage. The capacitors C1 and C2 can be optimised for whatever voltage, power and frequency envelopes are required. Further as the DE FETS have an upper limit of ~65 MHz frequency operation and 1.8kW power handling I think this will provide adequate heating.
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