John, to verify the waveform and charge you will need a Tektronix CT-1 current transformer, a 500 MHz digital oscilloscope, and a 500 ohm high voltage resistor. A 1/4 watt or larger carbon comp will work. Be aware that it has a voltage coefficient.
This will allow you to view the rise time, the decay time, and calculate the total charge in coulombs (amps X seconds). I have been working on this subject myself for the past couple of days. I have been view actual human discharges, an ESD gun, and have built my own miniature ESD generator. The generator and SPICE model are amazingly close when using component models that incorporate the parasitics. Dave Cuthbert Micron Technology From: John Harrington [mailto:[email protected]] Sent: Thursday, May 01, 2003 12:46 PM To: '[email protected]' Subject: ESD gun verification Hello All Does any one have a quick and dirty (and hopefully cheap) way to verify the performance of an ESD gun. Please, no one suggest building the current sensing system described in the back of IEC 61000-4-2. I don't understand the drawings let alone have the workshop or materials to consider it. Although, I may pay someone to build it for me... I am desperate enough to consider buying something off the shelf (if I could find said shelf). All help appreciated John Harrington EMC Technical Manager F-Squared Laboratories 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: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] 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: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] 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
