Jed Rothwell wrote:
Stephen A. Lawrence wrote:
So, after reading this, I got to wondering, and now I'd like to know how
Mizuno's power measurements were done, and that information would very
likely appear in the paper
Mizuno used a variety of different methods to measure power, including a
Hewlett-Packard computer-based instrument and a Yokogawa model PZ4000.
When he used a different methods at the same time they agreed to within 1%.
See:
http://www.lenr-canr.org//acrobat/MizunoTconfirmatib.pdf
http://lenr-canr.org/acrobat/MizunoTgeneration.pdf
I looked at those, and one or two other papers I found digging around
(still haven't found a copy of the original "excess energy" paper from
IE #20 -- I suppose I'll have to write to them and ask for a reprint).
From the technique documented in the papers I saw, Mizuno is measuring
the power input to the cells during glow-discharge electrolysis using
the HP data logger (current measured via recording voltage across a
shunt). HOWEVER he also has _calibrated_ the HP readings against either
the Yokogawa PZ4000 or a Yokogawa WT130 (which is a somewhat lower perf
wattmeter). In one paper he mentions a 5-second calibration period; in
another he mentions a 1-minute calibration period.
I could see no indication that the Yokogawa power meters are used for
data acquisition during the glow-discharge period, nor any indication
that the data logging approach was calibrated during glow-discharge
operation. This doesn't say he wasn't doing that; it just says that's
not what I saw in the papers. If you know conclusively whether he's
ever used the big Yokogawa for data acquisition during a full run I'd be
interested -- it's presumably capable of being used that way, though I
haven't dug far enough into the datasheet to be sure.
This is interesting for a couple of reasons.
First, one thing Little did is show the actual current signal during
glow discharge measured with a 100 MHz scope (across a shunt?
disrecall), and it appeared to have a lot of energy up around 100 MHz or
higher. Little used bypass caps to keep that out of his Clarke-Hess
power meter, which tops out at around 400 KHz. This suggests that a
data logging system which is accurate during ordinary electrolysis might
or might not give a correct reading once the glow discharge starts.
Mizuno's power supply, the EX-1500H, nominally rated at something like
0.1% accuracy, has a frequency response in constant-voltage mode of
about 1 KHz, so it, also, may be weirded out by the extreme HF nature of
the load.
Second, I keep choking on the fact that this is light water on a
tungsten electrode. It runs head on into Ed Storms's observation that
light water reactions produce transmutation products (which Mizuno has
seen) but little excess heat. Why is Mizuno seeing so much excess heat,
using light water? What reaction path could be taking place in his
cells that very few others can evoke?
