Hello everyone, I have been testing a product that has a ground fault interrupter (GFI) circuit breaker in it, I am wondering if anyone else has had similar experiences with products containing GFI circuit breakers? During RF immunity testing, at 5 V/m to 10 V/m level, within a frequency range of 800-900 MHz, the GFI breaker immediately trips when AM modulation is switched on. (I can think of a number of mechanisms for this behavior, the least of which are, dissimilar metal junctions in the neutral panel sense wire.) There are a few manufactures that make GFI IC's, such as Fair-Child and National Semiconductor, both which use a liberal amount of diodes (on the die) to allow powering the IC directly off the AC line. (Don't need no stinking power transformer in these designs!) ;-) These GFI's aren't quite as interesting as the new ARC detection breakers... Either way, this has been an interesting experience. Thanks to all that reply. Dave Garnier - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/
To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas [email protected] Mike Cantwell [email protected] For policy questions, send mail to: Jim Bacher: [email protected] David Heald: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
