Hi Rich and all others: Thanks a lot for clarifying this issue. I was living with one wrong idea about electro-static build-up mechanisms until you guys got me the right explanation. This to me is another confirmation of the value of this forum.
Thank you again, Paolo -----Messaggio originale----- Da: Rich Nute [SMTP:ri...@sdd.hp.com] Inviato: mercoledì 12 luglio 2000 18.40 A: paolo.ronc...@compuprint.it Oggetto: Re: R: R: Voltage Breakdown Hi Paolo: >From the other responses to your question, it appears that there are several phenomena that apply. Upon reading the other responses, and reading the referenced web sites, it appears that, in a humid atmosphere, build-up of electrostatic charge is limited by micro-condensation on material surfaces, which tend to bleed off charge before it can build to a value sufficient to break down the electric strength of the air. So, there appears to be no conflict between the fact that humid air has a slightly higher dielectric strength than dry air, and the fact that humid air limits the build-up of surface charge compared to dry air. (I have not copied the list with this response, but I did want to reply to you personally since you had ask a question of me personally.) Best regards, Rich ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson: pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org