WWW.CREEPAGE.COM <http://www.creepage.com/> has just been updated. The purpose of this site is to allow Compliance and Design Engineers easy Internet access to IEC 60950 Insulation, Creepage, and Clearance calculators. I converted the Java applications to Perl and HTML to, hopefully, make it platform independent. Also made the following changes: 1. Table 2G - Notes now appear as they do in IEC 60950 2. Table 2H - Added a “Quality Control” check box that uses parenthesis values. 3. Table 2J – Now included in Clearance Calculator. 4. Table 2L – Added “Coated Printed Circuit Box” checkbox that uses Table 2N values. 5. Interpolation is performed per Table 2H, 2L, and 2N. 6. Answers provided in mm and mils. Please try out these calculators and let me know if they are useful (or not) offline. All feedback is appreciated. Thank you and best regards, Dave 512.695.5871 www.lorusso.com <http://www.lorusso.com/>
From: [email protected] [mailto:[email protected]]On Behalf Of Dave Lorusso Sent: Tuesday, March 25, 2003 12:14 AM To: [email protected] Subject: www.creepage.com For anyone out there who has used Figure 2F and 2G of IEC 60950 (and variants) to figure out the required insulation, I’ve created a Java applet on www.creepage.com <http://www.creepage.com/> (great name huh?) to simplify the task. I’ve also created 2 other applets that calculate clearance in primary circuits, Table H, and Creepage, Table 2L. The calculators provide the value in mm and mils. Interpolation is also performed where accepted by the standard. It always drove me nuts trying to figure out how to interpolate, so I finally wrote it down, then put it in these programs. I also hated dividing everything by 25.4 so I put that in there as well to get mils. Please try them out and please send your comments directly to me at [email protected] to minimize traffic to PSTC. If you have trouble running them, please send me an email as well. I hope you enjoy these programs; I plan on adding more functionality as time permits. Thank you and best regards, Dave 512.695.5871 www.lorusso.com <http://www.lorusso.com/>
