Re: Design of low cost ESD gun.
In a message dated 5/11/2003 4:38:57 PM Central Daylight Time, jde...@nas.com writes: Given a choice, I'd recommend buying a proper Haefely-Trench Generator (absolutely the best gun on the market, in my opinion). Otherwise, visit your local market and get a BBQ Lighter. Hi Jim, have to take issue with you on that one... :-) Derek N. Walton Owner L F Research EMC Design and Test Facility Poplar Grove, Illinois, USA www.lfresearch.com
Re: Design of low cost ESD gun.
Mr. Leung: If you want a REALLY low-cost ESD gun, you might consider a simple piezoelectric Barbeque Lighter. I wrote a short construction article about this back in 1997 (Test and Measurement World Magazine). BBQ Lighters are pretty gross, but they give a reasonably repeatable 0.5 cm spark. Use a fine hacksaw to expose the tip. Solder a wire to the metal case, and connect it to ground (to provide a return path for electrons). Uncontrolled risetime, polarity, and amplitude, of course. I have found (in our Laboratory) that this Air Discharge BBQ Gun will catch 80% of valid ESD failures. In other words, if your EUT passes the BBQ Lighter test, the chances are fairly good that it will pass a $15,000 Haefely-Trench ESD Generator. Given a choice, I'd recommend buying a proper Haefely-Trench Generator (absolutely the best gun on the market, in my opinion). Otherwise, visit your local market and get a BBQ Lighter. Have fun! Jim Ericson Quality System Manager/Senior EMC Engineer Acme Testing Company Acme, WA j...@acmetesting.com p.s. Make certain to empty the Butane from the BBQ Lighter before fooling around with it! Go outside (in fresh air) and hold the trigger down. Or, drill a tiny hole in the tank...outside! - Original Message - From: lfresea...@aol.com To: ywle...@vtc.edu.hk ; emc-p...@majordomo.ieee.org Sent: Sunday, May 11, 2003 1:14 PM Subject: Re: Design of low cost ESD gun. In a message dated 5/8/2003 8:53:56 PM Central Daylight Time, ywle...@vtc.edu.hk writes: Can anyone provide some information about I want to make a low cost ESD gun for ESD test, the peak voltage about 4 or 8 k volt ( if it can induced + and - poloarity will be more better), the waveform just little similar to the specification, thanks. Mike makes a good point. Since Schaffner has introduced a new ESD gun, you may be able to find used older models very reasonably priced as folks look to trade up. Suggest you contact one of the ESD gun manufacturers to see if they have used equipment for sale. Cheers, Derek N. Walton Owner L F Research EMC Design and Test Facility Poplar Grove, Illinois, USA www.lfresearch.com
Re: Design of low cost ESD gun.
In a message dated 5/8/2003 8:53:56 PM Central Daylight Time, ywle...@vtc.edu.hk writes: Can anyone provide some information about I want to make a low cost ESD gun for ESD test, the peak voltage about 4 or 8 k volt ( if it can induced + and - poloarity will be more better), the waveform just little similar to the specification, thanks. Mike makes a good point. Since Schaffner has introduced a new ESD gun, you may be able to find used older models very reasonably priced as folks look to trade up. Suggest you contact one of the ESD gun manufacturers to see if they have used equipment for sale. Cheers, Derek N. Walton Owner L F Research EMC Design and Test Facility Poplar Grove, Illinois, USA www.lfresearch.com
RE: Design of low cost ESD gun.
Since you can buy a compliant gun for a few thousand dollars (used, demos, etc), why would you want to spend at least that much in time and materials to get something close?? Mike Hopkins Thermo Electron michael.hopk...@thermo.com From: LEUNG YAT WAH DEREK [mailto:ywle...@vtc.edu.hk] Sent: Thursday, May 08, 2003 9:50 PM To: emc-p...@majordomo.ieee.org Subject: Design of low cost ESD gun. Can anyone provide some information about I want to make a low cost ESD gun for ESD test, the peak voltage about 4 or 8 k volt ( if it can induced + and - poloarity will be more better), the waveform just little similar to the specification, thanks. This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
