Hello Group,
OK I'm confused. Some of you who get Conformity update may remember that at
the beginning of the month there was an article on the RTTE directive
having to do with DoC requirements. In part it .referred to a TCAM document
6 (30)0 in which a proposed compromise solution was suggested
Geez, this question makes me feel like I'm on Who want to be a millionaire!
Brain should have provided multiple choices for his two questions.
George, good anaolgy re the pumpkin. Here is some other stuff I remember
from my hated electric field classes some 40 years ago. If the radiator is a
As far as I know, EIAJ CP1104 is the only standard
worldwide that has the dc polarity symbol for
barrel connectors. (Likewise, as far as I know,
Japan has the only standard for barrel connectors.)
This symbol is definitely NOT in IEC 417. I'm glad somebody asked that
question - I've wondered
Does anyone have a copy of, or know where I can get hold of a copy of,
EOS/ESD-S4.1 from the ESD Association, covering Work surfaces - Resistance
Measurements?
Thanks,
Dave Wilson
Alidian Networks
---
This message is from the IEEE EMC Society Product
Hello Friends,
50130-4 Section 13 prescribes testing cables with a length of or = 2
meters. It further states that if a screened cable is used, then a 20 meter
length shall be tested. I assume the length is related to establishing
sufficient coupling of the surge signal on the screen to the
Try this link for IEC 417 symbols
http://w3.hike.te.chiba-u.ac.jp/iec417/ver2.0/html/index.html
John Juhasz
Fiber Options
Bohemia, NY
-Original Message-
From: geor...@lexmark.com [mailto:geor...@lexmark.com]
Sent: Thursday, November 30, 2000 10:45 AM
To: emc-p...@majordomo.ieee.org
Hi George:
Thanks for the quick response! Does this mean that the symbology is only
a Japan requirement? and does it apply to ITE as well as
audio-visual
equipment?
The referenced standard, EIAJ CP1104, is similar
to IEC 417. Indeed, EIAJ CP1104 contains many
Rich,
Thanks for the quick response! Does this mean that the symbology is only
a Japan requirement? and does it apply to ITE as well as
audio-visual
equipment?
Yes, I would appreciate a copy by email, or fax to 859 232 6882.
Regards, George
Hi George:
The dc polarity symbol
Hi George:
The dc polarity symbol is specified in:
Symbol 01060 (taken from JEIDA 11)
EIAJ CP-1104 (1998)
Terms and Grpahical Symbols for Audio and Audio-Visual Equipment
Technical Standardization Committee on Audio-Visual Equipment and Systems
Electronic Industries
To the safety professionals
I need some input on a subject for which I am no expert.
Typically, our AC adapter suppliers provide units with polarity
symbols a la:
- +
O-C-O
...where the -/+ signs are within the circles. The C represents
the outside of a
Hi,
I agree with Rich. This never made any sense to me even when I worked at
UL. Why are spacing not critical where the leads enter the case but are
critical on the PCB? Oh well, as Rich mentioned, there is an out. In many
cases the insulation if OPERATIONAL and can be short-circuited. For
Thank you Ross,
Your quotation from Websters illustrates the point beautifully.
Misuse of a word corrupts its original meaning. If done often enough
the dictionaries, like all good dictionaries should, list these
technically incorrect but common meanings.
This is how languages
You are all invited to our next EMC Chapter meeting.
List-Post: emc-pstc@listserv.ieee.org
Date: Wednesday December 13, 2000
Time: 7:30 pm
Location: Lindgren RF Enclosures (ETS-Lindgren)
400 High Grove Blvd, Glendale Heights, IL 630-307-7200
Hi Ken:
I wanted to pose the group a question in regards to spacing requirements for
the U.S. Many UL standards allow for the exception of components (such as
semi conductors, switches, etc) to not meet spacing requirements (as they
usually have different standards they meet
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