One of the formulas for power is Voltage Squared/Resistance. So, in the case where the load is purely resistive (and doesn't change), a dramatic reduction in power can be obtained by reducing the voltage.
Max Kelson Evans & Sutherland -----Original Message----- From: Ravinder Ajmani [mailto:ajm...@us.ibm.com] Sent: Friday, May 04, 2001 11:28 AM To: emc-p...@ieee.org Subject: RE: AC Power Primer? Can someone explain to me how reducing the voltage will lower the power consumption, if the load is kept constant. On the contrary, this should cause an increase in consumption because higher current means increased copper losses in the wiring. This is the reason why power distribution is done at very high voltage levels. Regards, Ravinder PCB Development and Design Department IBM Corporation Email: ajm...@us.ibm.com *************************************************************************** Always do right. This will gratify some people and astonish the rest. ..... Mark Twain Hans Mellberg <emcconsult...@yahoo.com>@ieee.org on 05/04/2001 09:04:41 AM Please respond to Hans Mellberg <emcconsult...@yahoo.com> Sent by: owner-emc-p...@ieee.org To: "Nerad, Daren HS-SNS" <daren.ne...@hs.utc.com>, "'Price, Ed'" <ed.pr...@cubic.com>, "'mkel...@es.com'" <mkel...@es.com>, emc-p...@ieee.org cc: Subject: RE: AC Power Primer? Daren, you bring up an interesting point. California's energy woes could possibly be band-aid if the voltage was reduced 10%. (maybe that is too big of a management issue, does anyone know?) Assuming that a large percentage of the users don't have switcher regulators then that would equate to a 5-9% reduction in energy consumption hence reducing California's power problems significantly till more power plants are built. That might lower the spot market price! --- "Nerad, Daren HS-SNS" <daren.ne...@hs.utc.com> wrote: > > It all boils down to $$$s! > Notice you don't see 110 V on the lines, probably not even 115 or 117 but as > close to 120V as they can keep it (except for you folks in CA, then this is > a digital thing, HA!). > > WHY? > > You consume more Watts if the V is greater! > > Check your wall outlet, what does it read? > > IT would be interesting to use this forum to do a quick & dirty survey. > Granted we can only hit where engineers feel like making measurements, & > when they do, but it would be interesting... > > Daren A. Nerad > EMC Engineer > ===== Best Regards Hans Mellberg Regulatory Compliance Consultant and Design Services By the Pacific Coast next to Silicon Valley Santa Cruz, CA, USA 408-507-9694 __________________________________________________ Do You Yahoo!? Yahoo! Auctions - buy the things you want at great prices http://auctions.yahoo.com/ ------------------------------------------- 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: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: pstc_ad...@garretson.org Dave Heald davehe...@mediaone.net 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.rcic.com/ click on "Virtual Conference Hall," ------------------------------------------- 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: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: pstc_ad...@garretson.org Dave Heald davehe...@mediaone.net 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.rcic.com/ click on "Virtual Conference Hall," ------------------------------------------- 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: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: pstc_ad...@garretson.org Dave Heald davehe...@mediaone.net 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.rcic.com/ click on "Virtual Conference Hall,"
