Clearly the standard considers dc load sdissipating less than 400 Watts unimportant contributors to overall ripple. This tracks with USAF practice of ignoring the CE101 requirement completely, for all loads.
Ken Javor Phone: (256) 650-5261 From: Derek Walton <lfresea...@aol.com> Date: Tue, 10 Sep 2013 05:12:04 -0400 (EDT) To: <ken.ja...@emccompliance.com>, <EMC-PSTC@LISTSERV.IEEE.ORG> Subject: Re: [PSES] AF ripple in DO-160 HI Ken, this has a dc requirement for loads greater than 400 Watts, but not less like most avionics boxes. UNless I missed something. Seems like something is missing to me.. Cheers, Derek. -----Original Message----- From: Ken Javor <ken.ja...@emccompliance.com> To: EMC-PSTC <EMC-PSTC@LISTSERV.IEEE.ORG> Sent: Mon, Sep 9, 2013 11:57 pm Subject: Re: [PSES] AF ripple in DO-160 Derek, Check out section 16.7 control on current ripple ac/dc, power factor, harmonic current. Ken Javor Phone: (256) 650-5261 From: Derek Walton <lfresea...@aol.com> Reply-To: Derek Walton <lfresea...@aol.com> Date: Mon, 9 Sep 2013 23:22:35 -0400 To: <EMC-PSTC@LISTSERV.IEEE.ORG> Subject: [PSES] AF ripple in DO-160 Hi Folks, the DO-160G conducted emissions limits begin at 150 kHz, I'm curious if there are other controlling documents that restrict emissions below 150? I believe Boeing does, and so does Airbus, but with DO-160 I don't see it. I must have dozed through this discussion.... Insight would be most welcome. Sincerely, Derek Walton L F Research EMC facility. - ---------------------------------------------------------------- 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 <emc-p...@ieee.org> 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 <emcp...@radiusnorth.net> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher <j.bac...@ieee.org> David Heald <dhe...@gmail.com> - ---------------------------------------------------------------- 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 <emc-p...@ieee.org> 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 <emcp...@radiusnorth.net> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher <j.bac...@ieee.org> David Heald <dhe...@gmail.com> - ---------------------------------------------------------------- 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 <emc-p...@ieee.org> 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 <emcp...@radiusnorth.net> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
