Math help please...

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  1. - 20th June 2008, 09:09 #1
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    Ioannis
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    Default Math help please...

    I am designing a project based on nano-Watt PIC like the 12F683. It is going to be powered by a supercap of 1Farad and I want to calculate the time it will work on the cap. The data are:

    Working voltage: 4.2 to 2.5 Volts
    Capacitor: 1 Farad
    Current: 208 micro amps

    As this needs Integration to calculate the time the cap lasts, I am little confused. Can anyone help me with this?

    I came up with the equation in the attached file. Is it correct?

    Thanks,
    Ioannis
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    Last edited by Ioannis; - 20th June 2008 at 09:18.
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