In message <53c53ed7.80...@earthlink.net>, dated Tue, 15 Jul 2014, CR
writes:
On 7/15/2014 2:19 AM, John Woodgate wrote:
Linear techniques these days are costly, heavy or just unfashionable.
Or mysterious to some of the recent graduate engineers today?
That's a consequence of 'unfashionabl
On 7/15/2014 2:19 AM, John Woodgate wrote:
Linear techniques these days are costly, heavy or just unfashionable.
Or mysterious to some of the recent graduate engineers today?
That's a consequence of 'unfashionable'.
It's a consequence of efficiency standards. I may be fixing EMI problems
u
In message
lectric.com>, dated Mon, 14 Jul 2014,
ralph.mcdiar...@schneider-electric.com writes:
Linear techniques these days are costly, heavy or just unfashionable.
Or mysterious to some of the recent graduate engineers today?
That's a consequence of 'unfashionable'.
--
OOO - Own Opinions
|
Regulatory Compliance Engineering
From:
John Woodgate
To:
EMC-PSTC@LISTSERV.IEEE.ORG,
Date:
06/04/2014 10:58 AM
Subject:
Re: [PSES] radiated emissions testing may understate actual emissions, an
example using a class D stereo amp
In message
,
dated Wed, 4 Jun 2014, Rick Busche writes
, 2014 12:40 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] radiated emissions testing may understate actual
emissions, an example using a class D stereo amp
In message <000a01cf8024$494154b0$dbc3fe10$@pctestlab.com>, dated Wed, 4 Jun
2014, Dward writes:
>Currently the rules
: Wednesday, June 04, 2014 12:55 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] radiated emissions testing may understate actual
emissions, an example using a class D stereo amp
I thought that version was available on papyrus scrolls also.
Ted Eckert
Compliance Engineer
Microsoft Corporation
In message
, dated Wed, 4 Jun 2014, Ted Eckert writes:
I thought that version was available on papyrus scrolls also.
Only the French text.
--
OOO - Own Opinions Only. With best wishes. See www.jmwa.demon.co.uk
Quid faciamus nisi sit?
John Woodgate, J M Woodgate and Associates, Rayleigh, Ess
Subject: Re: [PSES] radiated emissions testing may understate actual emissions,
an example using a class D stereo amp
I thought that version was available on papyrus scrolls also.
Ted Eckert
Compliance Engineer
Microsoft Corporation
ted.eck...@microsoft.com
The opinions expressed are my own and
ssage-
From: Sundstrom, Mike [mailto:mike.sundst...@garmin.com]
Sent: Wednesday, June 04, 2014 12:11 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] radiated emissions testing may understate actual emissions,
an example using a class D stereo amp
I'm pretty sure that:
The only rea
: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] radiated emissions testing may understate actual emissions,
an example using a class D stereo amp
No, I not German but Dutch ...
This was me
http://www.youtube.com/watch?v=zhnGIxrepEI
Gert
-Oorspronkelijk bericht-
Van: Gary
...@jmwa.demon.co.uk]
Sent: Wednesday, June 4, 2014 12:40 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] radiated emissions testing may understate actual emissions,
an example using a class D stereo amp
In message <000a01cf8024$494154b0$dbc3fe10$@pctestlab.com>, dated Wed, 4 Jun
2014, Dward
In message <000a01cf8024$494154b0$dbc3fe10$@pctestlab.com>, dated Wed, 4
Jun 2014, Dward writes:
Currently the rules are very specific about the year of CISPR 22 that
can be used. 15.38 specifically states that the reference to CISPR pub
22 only applies to the 1997 third edition version.
O
com]
Sent: Wednesday, June 04, 2014 2:12 PM
To: Sykes, Bob; EMC-PSTC@LISTSERV.IEEE.ORG
Subject: RE: [PSES] radiated emissions testing may understate actual emissions,
an example using a class D stereo amp
Bob
I've always read it as being a "measurement distance".
The FCC/CISPR limits ar
- Gert Gremmen [mailto:g.grem...@cetest.nl]
Sent: Wednesday, June 04, 2014 1:06 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] radiated emissions testing may understate actual emissions,
an example using a class D stereo amp
Airplanes use AM for critical communications between airport and plane.
A reli
Gmac
-Original Message-
From: Pettit, Ghery [mailto:ghery.pet...@intel.com]
Sent: Wednesday, June 04, 2014 11:15 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] radiated emissions testing may understate actual
emissions, an example using a class D stereo amp
We (pilots) even use it for
l.com]
Sent: Wednesday, June 04, 2014 11:15 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] radiated emissions testing may understate actual emissions,
an example using a class D stereo amp
We (pilots) even use it for less than critical communications. :-)
Ghery S. Pettit
-Original Me
esday, June 04, 2014 10:58 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] radiated emissions testing may understate actual
emissions, an example using a class D stereo amp
Charlie,
FCC Class B "protection distance" is 3m, where Class A is 10m. This
establishes their relationship.
-Oorspronkelijk bericht-
Van: Rick Busche [mailto:rick.bus...@qnergy.com]
Verzonden: woensdag 4 juni 2014 19:26
Aan: EMC-PSTC@LISTSERV.IEEE.ORG
Onderwerp: Re: [PSES] radiated emissions testing may understate actual
emissions, an example using a class D stereo amp
Do we still have AM? Someone once
June 2014 18:58
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] radiated emissions testing may understate actual emissions,
an example using a class D stereo amp
Charlie,
FCC Class B "protection distance" is 3m, where Class A is 10m. This
establishes their relationship. Class B = X
qnergy.com]
Sent: Wednesday, June 04, 2014 10:26 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] radiated emissions testing may understate actual
emissions, an example using a class D stereo amp
Do we still have AM? Someone once called that was Ancient Modulation. :) I
suspect that in a
: woensdag 4 juni 2014 19:26
Aan: EMC-PSTC@LISTSERV.IEEE.ORG
Onderwerp: Re: [PSES] radiated emissions testing may understate actual
emissions, an example using a class D stereo amp
Do we still have AM? Someone once called that was Ancient Modulation. :)
I suspect that in a few years fluorescent
ward [mailto:dw...@pctestlab.com]
> Sent: Wednesday, June 04, 2014 10:23 AM
> To: EMC-PSTC@LISTSERV.IEEE.ORG
> Subject: Re: [PSES] radiated emissions testing may understate actual
> emissions, an example using a class D stereo amp
>
> I do not want to speak for Mike Violette, but w
Nute [mailto:ri...@ieee.org]
Sent: Wednesday, June 04, 2014 11:02 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] radiated emissions testing may understate actual emissions,
an example using a class D stereo amp
On 6/4/2014 9:47 AM, Mike Violette wrote:
"Class B limits are amazingly cons
In message
,
dated Wed, 4 Jun 2014, Rick Busche writes:
As a side note, do LED lamps create EMI concerns?
Yes, or rather their feed circuits do: anything that uses switching
technology does. Linear techniques these days are costly, heavy or just
unfashionable.
--
OOO - Own Opinions Only.
In message <538f50f1.3090...@ieee.org>, dated Wed, 4 Jun 2014, Richard
Nute writes:
"Class B limits are amazingly conservative, to which large populations
of devices ascribe."
Try using an ordinary AM radio beside a compact fluorescent lamp
as on a beside table.
IS a CFL a 'digital device
or other
> defect. Thank you.
>
> -Original Message-
> From: Richard Nute [mailto:ri...@ieee.org]
> Sent: Wednesday, June 04, 2014 10:02 AM
> To: EMC-PSTC@LISTSERV.IEEE.ORG
> Subject: Re: [PSES] radiated emissions testing may understate actual
> emissions, an exam
EEE.ORG
Subject: Re: [PSES] radiated emissions testing may understate actual emissions,
an example using a class D stereo amp
I do not want to speak for Mike Violette, but what I think he is referring
to by interference is the fact that, while the FCC could care less if two
part 15 devices inter
June 04, 2014 10:26 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] radiated emissions testing may understate actual emissions,
an example using a class D stereo amp
Do we still have AM? Someone once called that was Ancient Modulation. :)
I suspect that in a few years fluorescent lamps will
: Wednesday, June 04, 2014 10:02 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] radiated emissions testing may understate actual
emissions, an example using a class D stereo amp
On 6/4/2014 9:47 AM, Mike Violette wrote:
"Class B limits are amazingly conservative, to which large popul
04, 2014 11:02 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] radiated emissions testing may understate actual emissions,
an example using a class D stereo amp
On 6/4/2014 9:47 AM, Mike Violette wrote:
"Class B limits are amazingly conservative, to which large populations of
de
Regards
Charlie
-Original Message-
From: Richard Nute [mailto:ri...@ieee.org]
Sent: 04 June 2014 18:02
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] radiated emissions testing may understate actual emissions,
an example using a class D stereo amp
On 6/4/2014 9:47 AM, Mike Violette wrote:
On 6/4/2014 9:47 AM, Mike Violette wrote:
"Class B limits are amazingly conservative, to which large populations
of devices ascribe."
Try using an ordinary AM radio beside a compact fluorescent lamp
as on a beside table.
-
This
[mailto:d...@emcesd.com]
> Sent: Tuesday, June 03, 2014 9:51 PM
> To: EMC-PSTC@LISTSERV.IEEE.ORG
> Subject: [PSES] radiated emissions testing may understate actual emissions,
> an example using a class D stereo amp
>
> Hi Everyone,
>
> I just posted my latest Technical T
] radiated emissions testing may understate actual emissions, an
example using a class D stereo amp
Hi Everyone,
I just posted my latest Technical Tidbit a few hours ago using a class D stereo
amplifier to illustrate a potential problem whereby emission test standards may
understate the
Hi Dough
I am not sure that this increased current contributes to radiation, as
it might be only a capacitive coupled local current that flows back from
the cabling through the conductive table to EUT.
By lifting the EUT that loop capacitance becomes smaller and so the
current.
It might even
In message <538ea5c5.6070...@emcesd.com>, dated Tue, 3 Jun 2014, Douglas
Smith writes:
I just posted my latest Technical Tidbit a few hours ago using a class
D stereo amplifier to illustrate a potential problem whereby emission
test standards may understate the emissions from a digital device
Hi Everyone,
I just posted my latest Technical Tidbit a few hours ago using a
class D stereo amplifier to illustrate a potential problem whereby
emission test standards may understate the emissions from a digital
device. Here goes:
Abstract: Radiated emissio
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