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  1. WHONOES

    Resistance and Inductance

    I use the following formula: Where Ra = required Value Rx = Known Value Ry = Unknown Value (to be placed in parallel with Rx) Ry = (1/(Rx - Ra) / Rx) *Rx It takes just a few seconds on a hand calculator. I have a spread sheet with all sorts of formulae on it (including this one) which make life...
  2. WHONOES

    Ic=C x dv/dt

    If it is a sine wave then use the formula 1/(2pi * C *F) which will give you the impedance of the capacitor and then use ohms law to get the current flowing in the capacitor. Simple eh?
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