I remember taking a class from Professor Brian O'Connell. ;) (P.S. I sat in the
front row). He said something of the following:
1. describe the end-use environment of your equipment.
2. specify the EMC standards that will be scoped for your equipment.
3. describe how the component or assembly wil
I was astonished to see in the Magazine (Vol 5,Quarter 2) the
interpretations of the Morse distress signals 'CQD' as 'Come Quick, Danger'
and '...---...' as 'Save Our Ship'. We might expect that in a newspaper,
but not, I feel, in an IEEE publication.
I am not a Morse expert, but I know that 'CQ
Also, forgot to add that the controls standard references IEC60384-16 and -17,
but unlike -14, these standards do not scope protection from electric shock,
and mostly scope and focus on the environmental (electrical, mechanical,
physical) requirements covered in general (-1) standard.
Brian
--
To all, FYI.
In the EU OJ today (see link below), there were four (4) harmonized standards
lists published relating to 4 directives.
Directives: 2006/42/EC, 89/686/EEC, 2014/53/EU (still very abbreviated),
2013/53/EU
http://eur-lex.europa.eu/legal-content/EN/TXT/?uri=OJ:C:2016:332:TOC
Best re
Thankfully no, all the safeties are done by mechanical means; pressure switches
and bi-metal thermostats. The controls designer wanted to avoid any safety
functions contained in the control board. As far as the product safety for the
heat pump we fall under UL1995 (Heating and Cooling Equipment)
Would there be a class B or C control function lurking in the shadows for your
board?
Brian
-Original Message-
From: Konnor Buxton [mailto:konn...@aaon.com]
Sent: Friday, September 09, 2016 9:02 AM
To: Brian O'Connell; EMC-PSTC@LISTSERV.IEEE.ORG
Subject: RE: Circuit board component comp
1. End use is to control a heat pump mounted in the building interstitial space
and is enclosed in an integrated control cabinet.
2. Primary standard is UL60730-1(Automatic Electrical Controls for Household
and Similar Use) with some cross over into part 2-6 (Particular Requirements
for Automa
Today's class is asking questions among a tribe of senior subversives.
1. describe the end-use environment of your equipment.
2. specify the product safety and/or EMC standards that will be scoped for your
equipment.
3. describe how the component or assembly will be used in your equipment.
4. des
Happy Friday all,
Our listing agency (ETL) has requested a component list including file numbers,
which has been pretty standard practice when listing our other products
(commercial HVAC) however I have been struggling to find listings (UL/CSA) for
inductors and capacitors for a circuit board p
Hi, EMC experts
We are doing 10G base-T ethernet reference design for the test chip. My first
task is to do radiated emission test.
I have two very basic questions for the setup:
1 How long CAT-6 ether net cable should be attached to the DUT when doing
emission test? in the actual application,
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