Try Combinova of Sweden. They make the impedance boxes. Their Web sit is
www.combinova.se. Ergonomics Inc. is the North American representative for
them. The address is above. The way Sc77A made the standard.makes it
difficult to make the measurements unless you are willing to scrap your old
Sylvia,
I think it’s a Java Virtual Machine (JVM) problem (really it’s a
“Microsoft hates Sun Java / Microsoft World Domination Problem”). You can
check to see if you have the latest JVM installed in Explorer by going to:
Tools
Internet Options
Advanced Tab
Scroll down to see if Java (Sun) is
Sir
A rather large bucket of worms, these PFC and conducted emissions issues (pls
see 61000-3-2).
No, this is not much of an issue for the U.S. (unless your facility is
actually affecting the utility); but I have read that the EC is currently
engaged is some interesting emission requirements
RE: High-currrent resistors and inductors1/27/03
Here is a possible source of High Power resistors in Europe.
http://www.heine-widerstand.de/english/wider1.htm
John
John Woodgate wrote:
One of my IEC colleagues, from a very large company, sent this enquiry:
I
Re: High-currrent resistors and inductors1/27/03
What we have found to work well is a combination of a resistor bank of open
helical resistors which we purchase from Post Glover (www.postglover.com).
Typically the total resistance is approximately 30 ohms which can be
Hello Dave,
I opened your heat dissipation calculator using Internet Explorer. After
entering all the necessary data, I clicked on the button for 'click to
calculate heat release' and nothing happened. Please advise.
Regards,
Sylvia
From: Dave Lorusso [mailto:d...@lorusso.com]
Sent:
Why are so many U.S. manufacturers using Unity Power Factor correctors in
low wattage power supplies?
Are there any U.S. requirements for Harmonics or they just trying to meet
CE mark requirements (devices rated 75W)?
Regards,
Don
This message is from the IEEE EMC Society Product Safety
All
We are reducing our office space and will no longer have space for our test
chamber.
It's lined with pyramidal absorber and has external dimensions of 7.25m long x
4.25m wide x 4m high.
Please contact me directly if you would like more information or to discuss
further.
regards
This sounds like something that won't be found on the shelf.
I have seen some small AC welding machines where the output current was
adjustable by increasing and decreasing an adjustable air gap designed into
the magnetic path of the flux cutting the output winding. The flux path in
the primary
One of my IEC colleagues, from a very large company, sent this enquiry:
I am interested in locating
suppliers that can provide variable impedance elements (Ztest Zref)
needed to test to EN 61000-3-11. The range of Ztest, at 50 Hz, may have
to be Ztest = (0.10 - 0.25) + j(0.10 - 0.25) with 75 A
10 matches
Mail list logo
