Derek: In the US (or Canada) I am not aware of any FCC or I.C. documents that limit conducted emissions from the output of a power supply or battery charger. In Europe, for CE Mark purposes, you definitely need to have a look at the applicable EN's, because some of them do have requirements for this sort of thing.
Last time I looked, there wasn't a product-specific EN for EMC for battery chargers. The generic emissions standard (EN50081-1) showed limits for DC outputs as "under consideration" last time I looked. The household equipment emissions standard (EN 55014) does have requirements for "load terminals", although I think it is really thinking about things like dimmers, not chargers, when it talks about switching regulators. Of course all standards have radiated limits, and filtering of the conducted common-mode noise on the DC output of a power supply will almost always be needed to meet those limits. Hope this helps, Regards, Jim Eichner > Senior Regulatory Compliance Engineer Statpower Technologies Corporation [email protected] http://www.statpower.com Any opinions expressed are those of my invisible friend, who really exists. Honest. > -----Original Message----- > From: Derek Walton [SMTP:[email protected]] > Sent: Tuesday, November 16, 1999 6:34 PM > To: EMC Discussion Group > Subject: Conducted Emissions for PS output > > > HI, > > would anyone like to suggest a specification for controlling conducted > emissions from the output of a power supply or battery charger. The > market place is either the USA or Europe. > > Thanks, > > Derek. > > -- > Derek Walton > Owner > L. F. Research EMC Design and Test Facility > 12790 Route 76, > Poplar Grove, > IL 61065. > www.lfresearch.com > > > > --------- > This message is coming from the emc-pstc discussion list. > To cancel your subscription, send mail to [email protected] > with the single line: "unsubscribe emc-pstc" (without the > quotes). For help, send mail to [email protected], > [email protected], [email protected], or > [email protected] (the list administrators). > --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to [email protected] with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to [email protected], [email protected], [email protected], or [email protected] (the list administrators).
