Electric Circuits 8th Edition 71

Electric Circuits 8th Edition 71 - 47 i c d b tood a h atti...

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47 a hatt in the flow of oxyqenated btood to the brain, causing death in a few minutes untess emergency aid js gjven immediatety. Tabte 2.1 shows a range of physiotogicat reactlons to various curlent levets. The numbers in this table are approxinate; they are obtajned from an anatysis of accidents because, obviousty, it is not ethicat to perform eLectricaL experiments on people. Good etectrjcal design witl limit currentto a few milLiamperes or less under al[ possible conditions. PhylioLoglcal Reaction BarcLy p€rcephbLe Heat stoppage 35 50 mA 50-70 mA 500 mA rvot* Data taken frcm w F. coop€t, Ehcttico! SaJety Engtnging, 2d ed. (London: ButteNodh, 1936); and c. D, Winburn, P@cttdi tledr?dlsdrtry (Monti@tlo, N.Y.: l,4arcel Dekket 1988). Now we devetop a sinpLified eLectrjcal model of the human body. The body acts as a conductor of current, so a reasonable starhng point is to model the body 0sing resistors. Figurc 2.25 shows
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This note was uploaded on 07/05/2010 for the course EE 100 taught by Professor Boser during the Spring '07 term at University of California, Berkeley.

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