Hello all,I have written a short introductory article on reverberation chambers
for a local EMC magazine here in Australia.This is enclosed for anybody who has
similar interests.Thanks
Arun Kaore
arun_ka...@yahoo.com
-
Do You Yahoo!?
Yahoo! Auctions - Click and b
Another option might be to use a variac (adjustable auto transformer) to
adjust the input.
-Original Message-
From: Kenneth McCormick [mailto:kmccormick...@hotmail.com]
Sent: Thursday, May 10, 2001 4:26 PM
To: emc-p...@majordomo.ieee.org
Subject: Re: looking for used power supply
It so
It sounds like Mike is looking for a power supply to provide power to test
electrical devices (not a power supply to be installed in a product).
I Interpret Mikes E-mail to be:
The power supply should be able to supply 50-60Hz (when connected to a 60Hz
supply, 3 phase supply (likely 120/208))
I would expect a simple correlation is difficult or has a reasonable
margin. I have been told in the past that for some products, they have
been tested and sorted following production for high output without
laseing. I suggest you work with the LED manufacturer's recommendation.
Since the nam
Hi Michael,
Can you be more specific about what you need for inputs and outputs? Or,
perhaps, you could describe the problem you are trying to solve?
Max Kelson
Evans & Sutherland
-Original Message-
From: Mike Stone [mailto:mst...@lsr.com]
Sent: Thursday, May 10, 2001 1:10 PM
To: emc
Just my observation, but I was under the impression
that power factor compensation with the power
companies is primarily capacitive. In other words,
the power grid out to the public *appears* overly
inductive and power companies compensate this
by adding capacitors. I'm not sure in light of
I can see why you might have difficulty finding such a device. Your
specifications are ambiguous.
Do you really mean variable frequency or the ability to operate from
either 50 or 60 Hz mains.
Ditto for variable voltage.
3000VA makes no sense in the context of 120VAC or 230VAC at 16 amps.
It is n
Welcome Bill!
If you want to jump right into something interesting...(kick in your two
cents worth of opinion)
Find the thread on "AC Power Primer".
HA!
Daren A. Nerad
EMC Engineer
815.226.6123
-Original Message-
From: Electrical-Safety - Bill Addiss
[mailto:b...@electrical-safety.com]
All perfectly true, as long as the Power Factor = 1.0! However with constant
load, loss of efficiency, increased amps, (Now still further out of phase), the
VA increases. Now the increased A causes an increase in line volts drop,
further reducing efficiency, and also increased demands on the d
Good Day,
I am looking into purchasing a used power supply.
Minimum requirements are:
3 phase input, single phase output
variable frequency, 50/60 Hz
variable voltage, 120VAC, 230 VAC
3 KVA
16 Amps
I have tried a number of resellers, with not much luck.
Thank you in advance for your help.
Bes
Gaby,
Could they be referring to ETS 300 350? A description of this standard
follows:
Integrated Services Digital Network (ISDN);Basic call control procedures for
circuit-switched bearer services;Functional capabilities and information
flows [ITU-T Recommendation Q.71 (1993), modified]
Does this
My name is Bill Addiss,
I'm a Licensed Master Electrician and Webmaster of
www.Electrical-Safety.com and www.Electrical-Contractor.net
I am subscribed here to stay informed of any Electrical Safety issues
that might arise.
I would like to invite any interested parties to partake in discussion
f
We are really fish out of water with this question.
There are so many effects to be considered, such as the I**2*R drop of
overhead wires, motor efficiencies, resistive characteristics of light bulb
filaments The way I see it, everybody's posting on the subject
(whether lowering AC distribu
Gaby,
The only information I have is that you need compliance to CISPR 22 and to
IEC/EN 60950. However, all submittals (and perhaps even test reports) have to
be from Romanian nationals and/or distributors.
The latest Romanian address I have is shown in the attachment from BHS (1999).
Tan
Gunter
The rbitem.com website maintains a list of courses, conferences etc in its
CONFERENCES AND EVENTS section. There are a number of courses being held in
Europe this summer. Here's the link to that section
http://www.rbitem.com/calendar/default.asp
Information on these events is listed at no
Gunter
Not sure if it exactly what you are looking or, or if will fit your schedule,
but ERA Technologies in the UK offer a series of 1 day courses on EMC. The
link will take you to this years diary of events.
http://www.era.co.uk/conf/crssbjct.htm#emc
gunter_j_ma...@embraco.com.br wrote:
> Co
Forwarded for Gaby Abboud. Please CC Mr. Abboud on
any replies.
David Heald
Original Message
Subject: Romania certifications
List-Post: emc-pstc@listserv.ieee.org
Date: Wed, 9 May 2001 14:28:34 -0400
From: Gaby Abboud
To: emc-p...@majordomo.ieee.org
Ladies and Gentlemen,
I
Some posts seemed to suggest that lowering the distribution voltage
could cause the power to increase. I doubt this can occur, as it would
require a new basic device with operating characteristics opposite that
of a resistor. As one posted noted, power = V**2 / R. So, as V decreases,
R would
Mat,
Bookfinder (http://www.bookfinder.com/) shows thatNorth Mountain Books
has a used copy ofELECTROMAGNETIC COMPATIBILITY IN POWER ELECTRONICS
available for $40.
North Mountain Books, 9226 N. Seventh St., Phoenix, AZ, U.S.A., 85020.
Phone: 602-997-1643. Email: lwjer...@eskim
one location to try is ERA Technology in the UK.
John Mowbray
-Original Message-
From: gunter_j_ma...@embraco.com.br
[mailto:gunter_j_ma...@embraco.com.br]
Sent: Thursday, May 10, 2001 8:13 AM
To: emc-p...@majordomo.ieee.org
Subject: EMC Courses in Europe
Colleagues
I am looking for
Colleagues
I am looking for short (a week maximum) EMC courses in Europe during 2001.
Topics of interest are :
- EMC Design principles;
- Suppression techniques for Burst, conducted EMI;
- EMC x PCB design;
- Measurement environments and testing (laboratory setup);
- EMC standards (for Europe);
Dear All,
1. Does anyone know the nominal voltage and tolerances for Power Over IP
networks as defined in IEEE802.3AF?
2. Since this SELV voltage source can exceed the hazardous energy (more than
240 VA) levels, for restricted access location (RAL)equipment with means for
connection to a power
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