My source was Hanno Essen, one of the authors. He answered a question
asked by email by one Sterling D. Allan <http://sterlingdallan.com/>
/ of Pure Energy Systems News/, reported earlier in this list.
>/4. Have you tried to test the output of the power supply to exclude
that/ /also a DC current is supplied to the device, which clamp
amperometers/ /could not detect?/ No, we did not think of that. The
power came from a normal wall socket and there did not seem to be any
reason to suspect that it was manipulated in some special way. Now that
the point is raised we can check this in future tests.
The PCE clamp to which you link is, indeed, DC rated. But Essen does
seem to believe, erroneously, that it is not possible to draw direct
current from an ordinary AC outlet. In fact, a simple diode does enable
one to take fluctuating DC from an AC outlet, which outlet has not been
manipulated in any special way. Maybe Essen does not have an EE background?
On 5/26/2013 7:53 PM, Jones Beene wrote:
*From:*Duncan Cumming
So is it your position that a current clamp without a Hall effect unit
can measure DC? Mine is that it cannot.
Did you actually check the PCE site?
It looks to me like all the current clamps on the PCE power analyzer
site measure both AC and DC
http://www.industrial-needs.com/technical-data/current-detector-PCE-DC-3.htm
