I read in !emc-pstc that Gabi Hoffknecht <gab...@simex.ca> wrote (in <80847F2BCE8AD511BE2F0060976AD68A03ECC8@SIMEXPDC01>) about 'Using PCB traces as transient voltage suppressor', on Wed, 20 Feb 2002: >I have seen PCB designs with two triangular shaped copper pads pointed >towards each other at very close proximity, meant as an air gap discharge >path for transients. Does anyone have information about such designs, >whether they work and how well ?
They are, or used to be, extensively used for flashover protection on TV CRT tube base boards. The board is pierced at the gap so there is no creepage. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk After swimming across the Hellespont, I felt like a Hero. PLEASE do NOT copy news posts to me by E-MAIL! ------------------------------------------- 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...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list"
