When I built a solar system for my RV about 7 years ago, I used traditional 30
VDC panels supplying a remote switching power supply that does the 30 VDC to 12
VDC conversion. If I were to test that system for EMI, then yes, I could supply
30 VDC conventionally from any clean DC source.
But,
It¹s likely way more complex in space than a simple panel on earth
generating something like 12 Vdc, but in space they connect various strings
in parallel and series and shift the connections based on the load and
impinging light as a spacecraft orbits the earth. Plus, in some cases a
control
Hi All,
I totally agree with Ken, folks are totally trying to over think this.
Just shine incandescents so the inventor can run. The panel will not generate
any noise.
Cheers,
Derek Walton.
> On Feb 14, 2019, at 8:41 PM, Ken Javor wrote:
>
> OK, but why? It’s an EMI test, not a test of
OK, but why? It¹s an EMI test, not a test of solar array performance.
Ken Javor
Phone: (256) 650-5261
From: Edward Price
Reply-To: Edward Price
Date: Thu, 14 Feb 2019 21:36:53 +
To:
Conversation: [PSES] Testing a product with that uses a solar panel
Subject: Re: [PSES] Testing a product
Ken:
I got the impression from the original question that the solar panel was
integrated with an inverter. That means that there might be coupling
interactions between the inverter circuitry and the solar panel array
conductors and/or the solar panel support structure. Indeed, the whole solar
Hi Everyone,
I am starting to add new Technical Tidbit articles to my website again. The
last one was 2016, but just posted another one with lots to come in the coming
months. An upcoming way will cover the best way to measure signal corruption in
the face of external interference.
If you are
"Retirement is not that far off. " It can never be too close either:) or not
close enough:) Yuck Yuck.
-Dave
From: Kunde, Brian [mailto:brian_ku...@lecotc.com]
Sent: Thursday, February 14, 2019 3:29 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] New EU enforcement regulations touches
My opinion is that the problem isn't companies that don't follow the current
regulations. It's because some companies know how to use the current
regulations all too well. Some companies operate as electronic storefronts for
many of the products found through their site. The host company is not
I've never understood why some people think that the solution to people not
following the rules can be solved by creating more rules. Studies have shown
the the vast majority of non-compliances are lack of understanding low risk
rules and not anything that would really hurt someone. They put
Yes, John, it looks like a new type of economic actor is defined to account for
Amazon type companies, but it also constrains everyone else.
One of the interesting points is a requirement to indicated the REA
(responsible economic actor) on the product (or in documents etc...). The REA
has to
Article 14 is interesting.
Powers and duties of market surveillance authorities
3. The powers conferred on market surveillance authorities under paragraph 1
shall include the following powers as a minimum:
(o) powers to carry out, without prior announcement, on-site inspections and
physical
Hi colleagues,
We currently have a position open for a RF Test Engineer at our RTP lab.
If any interest, here is the link to the Linked In page.
https://www.linkedin.com/jobs/view/rf-test-engineer-at-t%C3%BCv-s%C3%BCd-1115381898/
Thanks and have a great day!
Mac Elliott
-
It looks like a move to regulate Amazon and similar sources. At present,
in the UK at least, there is little surveillance of goods ordered in
small quantities by members of the public, with the exception of
medication and some medical products.
Best wishes
John Woodgate OOO-Own Opinions Only
I am disappointed that no labs have responded!
We have a very bright halogen lamp which we will use. Hopefully we don't melt
the plastic!!
Thanks!
Charles Grasso
W: 303-706-5467
From: Ken Javor [mailto:ken.ja...@emccompliance.com]
Sent: Thursday, February 14, 2019 9:54 AM
To:
Can you confirm that is a Stoddart or Eaton/Ailtech part number? Sounds like
it. I have old catalogs for both those companies.
Ken Javor
Phone: (256) 650-5261
From: "Price, Andrew (Leonardo, UK)"
Reply-To: "Price, Andrew (Leonardo, UK)"
Date: Thu, 14 Feb 2019 09:16:01 +
To:
I am well aware that an incandescent light bulb doesn¹t emit the same
spectral signature as received from the sun.
But the test is not about the detailed performance of the solar panel, but
only that the device-under-test runs off electricity generated by the solar
panel. Unless the EMI signature
Using our very own sun inside the chamber is the way to go apparently - or
emulate the current charge/discharge cycle.
Thanks!
Charles Grasso
W: 303-706-5467
From: Ken Javor [mailto:ken.ja...@emccompliance.com]
Sent: Wednesday, February 13, 2019 8:36 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject:
Hi Ken,
A 500W incandescent light will give you some voltage/current from your
solar panel, but it won't be representative of actual sunlight if this is
important to your test. The spectrum (or energy) for artificial light will
not be the same as the spectrum of sunlight. UL 1703 makes reference
CISPR 11:2015 CSV covers radiation. IEC 62920:2017 is also needed.
Best wishes
John Woodgate OOO-Own Opinions Only
J M Woodgate and Associates www.woodjohn.uk
Rayleigh, Essex UK
On 2019-02-14 03:36, Ken Javor wrote:
Re: [PSES] Testing a product with that uses a solar panel Waited to
see if
Hi all,
Can anyone help?
Looking for technical data on a 95055-1 magnetic Loop.
Regards
Andy
Andrew Price
Land & Naval Defence Electronics Division
Prinicpal Environmental Engineer (EMC)
Leonardo MW Ltd
Sigma House, Christopher
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