"M. G. Devour" wrote:
> Here, let me try! Hopefully I can unravel the mostly semantic > difficulties you guys're having in this discussion. > > Disclaimer: NEVER play around with house current like I'm going to > describe here unless you know what you are doing around electricity and > take appropriate safety precautions!!! I don't intend any of this > discussion to be practical advice! You have been WARNED! > > If we start with an AC 60 Herts, 110 volt sinusoidal source, there are > several things we can say about it. If you replace "average" with RMS in what you wrote it would all be correct. However average and RMS are NOT the same thing. The true average of AC is 0, since the negative half would cancel the positive half. The average of the absolute would be the integral of the voltage over one cycle divided by the time of that cycle. The RMS, which is what is always used for AC voltages such as house current is the square root of the integral of the voltage squared divided by the cycle time. The average is approximately .90 times the RMS value for a sine wave. See http://www.traceengineering.com/technical/tech_notes/tn2.html for more information on this relationship. Marshall -- The silver-list is a moderated forum for discussion of colloidal silver. To join or quit silver-list or silver-digest send an e-mail message to: [email protected] -or- [email protected] with the word subscribe or unsubscribe in the SUBJECT line. To post, address your message to: [email protected] Silver-list archive: http://escribe.com/health/thesilverlist/index.html List maintainer: Mike Devour <[email protected]>
