Courtland, Or like when my boss said he had never seen anything effected by the VCP in an ESD test and I showed him how it knocked out my USB mouse at 8KV contact to VCP every 5th hit or so. From over 10 feet away. My laptop didn't last much longer either, I'm wondering if it is connected to all my ESD exposure err testing?
Thanks, Michael Sundstrom Garmin Compliance Engineer 2-2606 (913) 440-1540 KB5UKT "We call it theory when we know much about something but nothing works, and practice when everything works but nobody knows why." -- Albert Einstein -----Original Message----- From: Cortland Richmond [mailto:[email protected]] Sent: Thursday, November 03, 2016 2:00 PM To: [email protected] Subject: Re: [PSES] Fwd: ESD, part of our training Enjoy! On 11/1/2016 8:53 AM, N. Shani wrote: > Well, I don't know if he's an idiot or a fool: About 30 years ago, we got a brand-new ESD test gun at Wang Laboratories in Massachusetts, and I found it necessary to prove that the simulator delivered a similar waveform as a human. I got to be the human. My technique was to discharge the tip of the gun to a Pellegrini target feeding a 1 GHz delayed sweep 'scope. These were the days when one needed a Polaroid camera (with 3000 speed film) whose shutter was triggered from the sweep. We had a linoleum floor with no attention paid to ESD discharge, so it was pretty easy to charge myself up to 5 kV and discharge the potential from my outstretched finger to the target. None of us will be surprised that it was a very close resemblance to the waveform the simulator produced. However… A lot of us got into this line of work by playing. Yes even as I dictate this, I can hear people thinking "Oh, that's what he's going to do!" We'll see. I put the sharp-pointed contact discharge tip on the simulator, and set up the gun at 25 KV continuous, aiming it to the mechanical doors some 5 m away and locking down the trigger. When high-ranking visitors decided to drop by and interrupt every kind of test, some of them classified, they would perforce have to walk through the area iwhere ions were most plentiful, and the accumulated charge would make them jump. This had the desired effect. The number of visitors dropped precipitously. Did you get it right? Cortland Richmond - ---------------------------------------------------------------- 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]> ________________________________ CONFIDENTIALITY NOTICE: This email and any attachments are for the sole use of the intended recipient(s) and contain information that may be Garmin confidential and/or Garmin legally privileged. If you have received this email in error, please notify the sender by reply email and delete the message. Any disclosure, copying, distribution or use of this communication (including attachments) by someone other than the intended recipient is prohibited. Thank you. - ---------------------------------------------------------------- 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]>
