Yes, Hall effect clamps are readily available, I am not disputing that.
They used to suffer from drift problems, but these problems have pretty
much been solved. The one that you show has a 3% accuracy and 8 digits
of drift - not bad.
The only info I have about Rossi came from a single post on this list,
his opinion may well be different than it appears - for one thing, there
were some translation problems.
So we are in agreement on these points. Here are a few more points - can
we agree on these as well?
1) I am not saying that Rossi is now, or has ever previously done
anything fraudulent.
2) I am not saying that anything except regular AC voltage was present
at the wall socket during the demo.
3) I am not claiming that the lab was in any way "re-wired" in an
attempt to perpetrate a fraud.
4) I am not speculating that either bridge rectifiers or smoothing
capacitors may have been used.
Duncan
On 5/27/2013 11:36 AM, Jed Rothwell wrote:
Duncan Cumming wrote:
(Of course, DC rated Hall effect clamps are available but were
not used in the demo, partially because Rossi appears to
believe that an AC outlet will only deliver AC current - this
is far from being the case).
1. People have been measuring DC amperage by measuring a magnetic
field since 1820.
2. These are Hall effect clamps. See the specifications They are rated
for very low DC power:
http://www.industrial-needs.com/manual/manual-clamp-meter-pce-cd3.pdf
3. Rossi played no role in this. His beliefs about AC are probably not
as you describe them, but in any case he had no say in the matter.
- Jed
