Communication aid for sycophants?
I see that Intersil have introduced a new VoIP device bearing the acronym R-SLIC. -- 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: 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 Healddavehe...@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,
Re: AC Power Primer?
236f133b43f4d211a4b00090273c79dc060b6...@us-rv-exch-2.rsvl.unisys.com, Richardson, William G william.richard...@unisys.com wrote: The important thing to note is that a good amount of the utility load is not constant power. It is light bulbs, toasters, coffeemakers, hairdryers and electric heaters and so on. So lowering the voltage 10 % is the first step - the so-called brown-outs. Power is a square function, so the new power is then 90% times 90% or only 81% of the original load. Not with light bulbs, actually. At a lower voltage the filament temperature is lower, so the resistance is lower. Over a certain voltage range, a lamp draws a nearly constant current, so for a 10% voltage drop, the power drops by around 10%. not 20%. -- 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: 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 Healddavehe...@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,
Re: AC Power Primer?
From: mkel...@es.com Another potential problem I see with calling both a phase-to-phase connection and a phase-to-neutral connection, single-phase is that it presumes that all power supplies can be connected either way. What if a vendor designs a system in which the power supply is changed many times over the years? Can you be absolutely, 100% sure that any power supply that you, or your successor, select will work with a phase-to-phase connection? Would you bet your reputation on it? Would you bet your job on it? Uh, yes - I have many times and do with the products I've worked on. That's part of my job responsibility. My original statement which may have been lost in translation was the following - *IF* you can connect either as input, you have a single phase system, AFAIC. Your examples are obviously valid if those are the issues at hand. But, they are outside my point and do not contradict what I originally said. If however these issues are surprises in the course of someone's job, then of course there's reason for concern. Regards, Doug McKean --- 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 Healddavehe...@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,
Re: AC Power Primer?
OF4C42EB04.E0B792AD-ON87256A42.005E5AE5@LocalDomain, Ravinder Ajmani ajm...@us.ibm.com 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: 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 Healddavehe...@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,
