<OF4C42EB04.E0B792AD-ON87256A42.005E5AE5@LocalDomain>, Ravinder Ajmani <[email protected]> wrote: >Can someone explain to me how reducing the voltage will lower the power >consumption, if the load is kept constant.
What is it about the load that you propose is kept constant? If the load is a constant resistance R, Ohm's and Joule's Laws give you W = V^2/R, so reducing the voltage V reduces the power W. You are probably thinking in terms of switch-mode power supplies, where the input current increases if the input voltage decreases. The incremental input resistance is thus negative, but you can't put such an incremental value into W =V^2/R. For these power supplies, W is approximately constant, and independent of V, within the specified range of input voltage. -- Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839 Fax +44 (0)1268 777124. http://www.jmwa.demon.co.uk Why not call a vertically- applied manulo-pedally-operated quasi-planar chernozem-penetrating and excavating implement a SPADE? ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: [email protected] Dave Heald [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.rcic.com/ click on "Virtual Conference Hall,"
