HI Doug, Absolutely, this is what I've been saying all along. Just extend your box observations to cables also.
Great stuff, Derek. -----Original Message----- From: Doug Smith <[email protected]> To: Bill Owsley <[email protected]> Cc: Derek Walton <[email protected]>; Michael_Sundstrom <[email protected]>; bstammerjohan <[email protected]>; EMC-PSTC <[email protected]> Sent: Wed, Jul 27, 2011 12:06 am Subject: Re: [PSES] ESD Spacer Speaking of effects of changing the capacitance to the horizontal coupling plane, take a look at the effect of placing small rubber feet on a small enclosure: http://emcesd.com/tt2006/tt010106.htm Would you retest if you added these thin feet to an enclosure? I would bet most would not, but should. Doug On 7/26/11 3:06 PM, Bill Owsley wrote: how about the dielectric constant of the spacer? It can range from near air using paper, to something over 10 using some of those fancy materials. Certainly that would change the capacitive coupling to reference plane and that would affect the ESD waveform. And the how to test the spacer for voltage withstand, or to detect any leaks? Say hi-pot it to 15 kV, or 30 kV.? Attitude is Mind over Matter. If you don't Mind, it doesn't Matter... This email has been displayed using 100% recycled electrons and 100% pure virgin photons. From: Derek Walton <[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://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.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]>
