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*To*: tesla-at-pupman-dot-com*Subject*: Primary RMS Current and updated MMCCalc2*From*: Terry Fritz <twftesla-at-uswest-dot-net>*Date*: Thu, 14 Sep 2000 12:06:46 -0600*Delivered-To*: fixup-tesla-at-pupman-dot-com-at-fixme

Hi All, I have received a number of inquiries about primary circuit RMS current and using MMCCalc for different types of capacitors. I modified MMCCalc to be able to easily input the parameters of any MMC cap (that's been needed for a long time ;-)). It also displays primary RMS current now. It always calculated that but never displayed it :-[ The new version (2.2) can be found at: http://216.160.168.190/TeslaCoils/programs/Mmccalc2.zip The RMS current is calculated using the formulas in MMCPower4.html. The equations for resistance of a single cap (Rcap) and power dissipated in a single cap (Wo) can be used to find current by simply using Ohm's law. P = I^2 x R ==> I = SQRT(P / R) So the RMS current in a single cap (which is the same for a single string) is: Irms = SQRT (Wo / Rcap) The Primary RMS current is simply that number multiplied by the number of strings Iprms = SQRT (Wo / Rcap) x Nstring MMCPower4 is at: http://216.160.168.190/TeslaCoils/MMCInfo/MMCPower4.html Cheers, Terry

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