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# Power Losses

- To: femm mailing list <femm@yahoogroups.com>
- Subject: Power Losses
- From: "brian_hawes" <b.hawes1@physics.ox.ac.uk>
- Date: Fri, 09 Aug 2002 09:37:18 -0400
- User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.0.0) Gecko/20020530

`I have been using FEMM 3.1 to calculate r.f. losses in solenoids. I made each turn a separate circuit, and defined a current of 1-Ampere. I started by assuming that with I=1, I2*R=R, and hence P=R. I found I was getting resistance values ~ 1/2 what I expected. It finally dawned that with a.c. analyses, the defined current must be treated as an r.m.s value. Can someone confirm I am right, or have I dropped a factor two somewhere else?`
``

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