Brian, That is the rms value of two "uncorrelated" ac voltage sources.
For noise, this is the way uncorrelated noise power adds. - Robert - Robert A. Macy, PE .. m...@california.com 408 286 3985 . . . .. . . fx 408 297 9121 AJM International Electronics Consultants 101 E San Fernando, Suite 402 San Jose, CA 95112 On Thu, 18 Dec 2003 07:50:17 -0800 "Brian O'Connell" <boconn...@t-yuden.com> wrote: > Good People > > What is the basis of this formula for working voltage ? > > sqroot(a^2 + b^2) > > thanks, > Brian This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ieee-pses.org/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: emc_p...@symbol.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc