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Groups > sci.electronics.design > #464713
| Subject | Re: EMI problems |
|---|---|
| Newsgroups | sci.electronics.design |
| References | <gaf3kc5s96hufpak4qqm6avol7g05r27rc@4ax.com> <-eednRZkVPLrQd_EnZ2dnUU7-LmdnZ2d@giganews.com> <o3s5kct2q5n60u47fmjmbbr75e84aaalak@4ax.com> <oYadnX96D7aMudnEnZ2dnUU7-QudnZ2d@giganews.com> |
| From | Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> |
| Date | 2017-06-16 14:46 -0400 |
| Message-ID | <iYOdnTG10c0OutnEnZ2dnUU7-K2dnZ2d@supernews.com> (permalink) |
On 06/16/2017 02:31 PM, Jon Elson wrote: > John Larkin wrote: > > >> I have a cap across the amp power connector on the inside. It's from a >> switching wall wart! The DUT power (+-6V) comes through 3.3nF feedthru >> caps, ebay bag-o from Lithuania. >> > That's NOWHERE good enough! You need a feedthrough cap there, too. That > wall-wart jack is the least suppressing port on the can, so most likely the > primary way interference gets in. >> It seems to work! I'm seeing 15 mV RMS reported by the scope. >> Correcting for the X100 amp, and the 200 MHz scope bandwidth, the 100 >> MHz noise is 106 uV RMS, 10.6 nV/rtHz. The noise spectrum looks flat >> up to the scope's 200 MHz rolloff, so the 100 MHz correction is mostly >> honest. >> >> I had to bolt both boxes to the bottom of the cookie can, for good >> grounding. >> >> Should we ship a Danish Butter Cookie can with each production unit? >> >> >> > Only if still filled with cookies. Instruction booklet should indicate the > end user needs to eat all the cookies before installing the electronics into > the can. > > Jon > That's the upmarket version of Thor Labs' Lab Snacks. Some people get a lot of them: https://www.youtube.com/watch?v=zhOmwTOqsbU . That would have hurt more with cookie tins. Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC Optics, Electro-optics, Photonics, Analog Electronics 160 North State Road #203 Briarcliff Manor NY 10510 hobbs at electrooptical dot net http://electrooptical.net
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EMI problems John Larkin <jjlarkin@highland_snip_technology.com> - 2017-06-14 16:09 -0700
Re: EMI problems Martin Riddle <martin_ridd@verizon.net> - 2017-06-14 20:05 -0400
Re: EMI problems John Larkin <jjlarkin@highland_snip_technology.com> - 2017-06-14 18:01 -0700
Re: EMI problems o pere o <me@somewhere.net> - 2017-06-15 09:28 +0200
Re: EMI problems Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-06-15 10:59 -0400
Re: EMI problems Don Kuenz <g@crcomp.net> - 2017-06-21 02:53 +0000
Re: EMI problems John Larkin <jjlarkin@highlandtechnology.com> - 2017-06-15 07:59 -0700
Re: EMI problems George Herold <gherold@teachspin.com> - 2017-06-15 08:07 -0700
Re: EMI problems Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-06-15 11:12 -0400
Re: EMI problems George Herold <gherold@teachspin.com> - 2017-06-15 08:42 -0700
Re: EMI problems John Larkin <jjlarkin@highlandtechnology.com> - 2017-06-15 09:38 -0700
Re: EMI problems Robert Baer <robertbaer@localnet.com> - 2017-06-16 22:06 -0800
Re: EMI problems Jon Elson <jmelson@wustl.edu> - 2017-06-15 14:14 -0500
Re: EMI problems John Larkin <jjlarkin@highland_snip_technology.com> - 2017-06-15 13:55 -0700
Re: EMI problems Lasse Langwadt Christensen <langwadt@fonz.dk> - 2017-06-15 14:02 -0700
Re: EMI problems Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-06-16 12:43 -0400
Re: EMI problems John Larkin <jjlarkin@highland_snip_technology.com> - 2017-06-16 10:11 -0700
Re: EMI problems Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-06-16 13:24 -0400
Re: EMI problems Jeff Liebermann <jeffl@cruzio.com> - 2017-06-16 10:37 -0700
Re: EMI problems Jon Elson <jmelson@wustl.edu> - 2017-06-16 13:31 -0500
Re: EMI problems Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-06-16 14:46 -0400
Re: EMI problems John Larkin <jjlarkin@highland_snip_technology.com> - 2017-06-16 12:25 -0700
Re: EMI problems George Herold <gherold@teachspin.com> - 2017-06-16 13:07 -0700
Re: EMI problems John Larkin <jjlarkin@highland_snip_technology.com> - 2017-06-16 12:22 -0700
Re: EMI problems upsidedown@downunder.com - 2017-06-16 09:35 +0300
Re: EMI problems John Larkin <jjlarkin@highlandtechnology.com> - 2017-06-16 06:40 -0700
Re: EMI problems Joerg <news@analogconsultants.com> - 2017-06-15 12:27 -0700
Re: EMI problems John Larkin <jjlarkin@highland_snip_technology.com> - 2017-06-15 12:47 -0700
Re: EMI problems Lasse Langwadt Christensen <langwadt@fonz.dk> - 2017-06-15 12:57 -0700
Re: EMI problems Joerg <news@analogconsultants.com> - 2017-06-15 13:12 -0700
Re: EMI problems Joerg <news@analogconsultants.com> - 2017-06-15 13:03 -0700
Re: EMI problems "Lund-Nielsen, Jorgen" <jorgen.lund-nielsen@xyz123desy.de> - 2017-06-16 08:58 +0200
Re: EMI problems Jeff Liebermann <jeffl@cruzio.com> - 2017-06-16 10:03 -0700
Re: EMI problems John Larkin <jjlarkin@highland_snip_technology.com> - 2017-06-16 11:09 -0700
Re: EMI problems Jeff Liebermann <jeffl@cruzio.com> - 2017-06-16 12:06 -0700
Re: EMI problems John Larkin <jjlarkin@highland_snip_technology.com> - 2017-06-16 12:34 -0700
Re: EMI problems Jeff Liebermann <jeffl@cruzio.com> - 2017-06-17 09:22 -0700
Re: EMI problems John Larkin <jjlarkin@highlandtechnology.com> - 2017-06-17 10:08 -0700
Re: EMI problems John Larkin <jjlarkin@highlandtechnology.com> - 2017-06-17 11:07 -0700
Re: EMI problems Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2017-06-17 21:30 +0300
Re: EMI problems pcdhobbs@gmail.com - 2017-06-17 16:34 -0700
Re: EMI problems krw@notreal.com - 2017-06-17 20:44 -0400
Re: EMI problems George Herold <gherold@teachspin.com> - 2017-06-19 06:03 -0700
Re: EMI problems Jeff Liebermann <jeffl@cruzio.com> - 2017-06-18 12:49 -0700
Re: EMI problems John Larkin <jjlarkin@highlandtechnology.com> - 2017-06-18 13:42 -0700
Re: EMI problems Jeff Liebermann <jeffl@cruzio.com> - 2017-06-18 15:50 -0700
Re: EMI problems John Larkin <jjlarkin@highlandtechnology.com> - 2017-06-18 17:15 -0700
Re: EMI problems upsidedown@downunder.com - 2017-06-19 09:39 +0300
Re: EMI problems upsidedown@downunder.com - 2017-06-19 09:48 +0300
Re: EMI problems Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-06-19 12:45 -0400
Re: EMI problems "John Miles, KE5FX" <jmiles@gmail.com> - 2017-06-16 15:30 -0700
Re: EMI problems John Larkin <jjlarkin@highland_snip_technology.com> - 2017-06-16 18:10 -0700
Re: EMI problems Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-06-17 11:08 -0400
Re: EMI problems upsidedown@downunder.com - 2017-06-17 14:25 +0300
Re: EMI problems Jeff Liebermann <jeffl@cruzio.com> - 2017-06-17 09:35 -0700
Re: EMI problems John Larkin <jjlarkin@highlandtechnology.com> - 2017-06-17 10:42 -0700
Re: EMI problems upsidedown@downunder.com - 2017-06-17 14:45 +0300
Re: EMI problems John Larkin <jjlarkin@highlandtechnology.com> - 2017-06-17 08:28 -0700
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