It is worth noting that about one hundred years ago, in the complete absence of EMC departments or even acknowledgement of such a discipline, electrical engineers worked out what was necessary to adequately suppress ignition noise to allow for AM BCB reception in automobiles. Whereas today, Tesla for instance, with a full-up EMC department, punted on AM BCB reception in their electric vehicles.
Ken Javor Phone: (256) 650-5261 From: Bill Owsley <[email protected]> Reply-To: Bill Owsley <[email protected]> Date: Mon, 20 Dec 2021 03:25:20 +0000 To: <[email protected]> Subject: Re: [PSES] US vehicle EMC regulations Long ago, when US auto manufacturers were the main stream norm, and they worked out a deal with the FCC to regulate themselves and not be subject to the FCC. The FCC agreed since any interference would be obvious and the FCC has the primary interference clause, thou shall not interfere, or they would impose Federal regs on the auto industry. If has worked well, but has not in the US, come up with a common set of auto EMC standards. So for Auto EMC, map out the "big three" requirements and stay under the composite levels. Aside: anyone remember non=resistive plugs and copper spark plug wires and radios with tubes that used a vibrator (old style) to generate AC to then generate the correct DC needed to run the radio ? And listening to AM with cars around you ? Buzzzing noise ! ps. The EU is quite different. - Bill Owsley EMC First LLC (Jan 2022) On Friday, December 17, 2021, 10:52:58 AM EST, Ken Javor <[email protected]> wrote: CISPR 25 is used for equipment-level emissions (CE & RE). This is for the purpose of protecting on-board radio reception and has nothing to do with the FCC. ISO 11452-X provide a variety of immunity requirements. And, as noted previously, various OEMS have their own internal requirements. The only FCC overview of any of this concerns SAE J551, where they measure vehicle-level emissions at ten meters separation from the vehicle, for the protection of roadside licensed broadcast receivers. Ken Javor Phone: (256) 650-5261 From: "James Pawson (U3C)" <[email protected]> Reply-To: "James Pawson (U3C)" <[email protected]> Date: Fri, 17 Dec 2021 12:05:33 -0000 To: <[email protected]> Subject: [PSES] US vehicle EMC regulations Hi all, I¹m familiar with UNECE Regulation 10 that covers EMC for vehicles and Electronic Sub Assemblies in Europe. Is there an equivalent set of vehicle EMC standards for the US? Presumably CFR47 Part 15 applies to unintentional and intentional radiators as well? Thanks and all the best James James Pawson The EMC Problem Solver Unit 3 Compliance Ltd EMC : Environmental & Vibration : Electrical Safety : CE & UKCA : Consultancy www.unit3compliance.co.uk <http://www.unit3compliance.co.uk/> | [email protected] <mailto:[email protected]> +44(0)1274 911747 | +44(0)7811 139957 2 Wellington Business Park, New Lane, Bradford, BD4 8AL Registered in England and Wales # 10574298 <https://www.avg.com/internet-security> This email has been checked for viruses by AVG antivirus software. www.avg.com <https://www.avg.com/internet-security> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. 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To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) <http://www.ieee-pses.org/list.html> List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher <[email protected]> David Heald <[email protected]> - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) <http://www.ieee-pses.org/list.html> List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher <[email protected]> David Heald <[email protected]> - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
