I read in !emc-pstc that [email protected] wrote (in <ofaba67a95.7e85c2b8-on85256d32.004d2778-85256d32.00519...@mitel.com>) about 'Bad Fuse vs. Good Fuse' on Mon, 26 May 2003:
>You can be almost certain that it was >not caused by a "bad" fuse. No, that is not true, or at least it wasn't when we were putting 20 x 5 mm fuses in television sets. Periodically, one or other of our five fuse suppliers would run into manufacturing problems and we would get a batch of fuses with a short-term failure rate of 20% or even more. They would usually hold up long enough to pass soak and final test, and let go a few days after purchase. The failure modes were open-circuit for no external reason and high resistance. Occasionally, we would get one that produced cracking on sound, indicating a poor internal connection. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk 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: [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
