Sounds, great, right? WRONG!!! No RFI? Hah! How do you think one changes the voltage from 120V ac to a couple of volts dc to power the LEDs without requiring huge, expensive line-frequency transformers or resistors that dissipate tens of watts (at least)? You do what everybody does these days; you use a switching regulator (usually a buck converter). And what is the most noticeable unwanted byproduct of switching regulators? RFI. Now, it may be possible to operate the converters at, say, 3 MHz. That really shrinks the transformers and moves the RFI up in frequency beyond the AM band but it will certainly interfere with other kinds of receivers in your house. Of course, at a switching frequency of 3 MHz, the filters can use nice small components, but there clearly is no prima facie case for LEDs being inherently quieter RF-wise than CFLs.
-- Dan Strassberg [EMAIL PROTECTED] Fax: 1-707-215-6367 _______________________________________________ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com
