> "Years ago my young son bought one of those scooters with his own > hard-earned money..."
Steve, The switch-mode chargers used for scooters are notoriously noisy. I had a similar issue with the neighbor to the side of me. These supplies offer little or no common-mode filtering between the switcher circuit and the AC line. In my own home, several SMPS have caused interference. I have been replacing SMPS types with used, industrial linear supplies (e.g., Lambda, PowerOne, etc.) Many SMPS designs are fine and produce no interference. The most problematic chargers seem to be imported from Asia and/or are imbedded into our household appliances where they are exempt from Part 15 certification. Part 15 requires an entire re-write since the proliferation of microprocessors and SMPS devices in common household appliances over the past decade. Paul, W9AC ______________________________________________________________ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
