Quote from: bubulindo on May 25, 2011, 03:18 pm...Can't think of any more formulas for small electronics, since all the other more complicated deride from these. :\ I think you mean "derive," (he said derisively...) :-)
...Can't think of any more formulas for small electronics, since all the other more complicated deride from these. :\
1/ (2pi FC) - is the capacitive reactance (equivalent resistance) of a capacitor at a frequency F. Replace C with L for inductive reactance.
Personally I never use the above form, I like the reciprocals variant as it is simpler with more than 2 resistors:1/R = 1/R1 + 1/R2 ... + 1/RnSame goes for capacitors in series btw:1/C = 1/C1 + 1/C2 ... + 1/Cn
If you have a calculator that uses RPN (Reverse Polish Notation) these versions are especially easy to implement.
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