Hi, All For cordless phone, in most cases, the charging circuits are touchable. So based on 6.2.2.2, we need apply 1000Vac between the charging circuits and TNV-3. Usually it'll fail if there is no isolation transformer after Tip and Ring. Most of the manufacturers don't want to add an isolation transformer to avoid increasing the cost. So does anybody there have any idea to solve this problem without an additional transformer?Thanks.
Regards, Carl 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
