The formula for the duty cycle makes no sense. My rusty brain thinks it should be D=(R1+R2)/(R1+2R2), but it's multiple decades ago I used it so I might be wrong
You are totally correct, this is only a typo in latex which I have just pushed a fix for. Thank for you the note.
Now it says 404. The correct URL has a -1 after it
Update: Eight o'clock and all is well ;-). Thanks for the interesting article.
Should be back to normal again, apologies for the issues, web dev is not my strong point
... And so that constraint forces R1 to be zero? Note that finding a solution to the problem originally stated is equivalent to a linear programming problem, which (for such a simple problem) can easily be solved exactly.
Dividing by R₁ + 2R₂ is not linear, and neither is multiplying C by R₁ + 2R₂, nor dividing by that product. But you could maybe formulate a linear objective function that solves this problem correctly, and then you could formulate the component selection problem as a MILP problem and solve it with GMPL/MathProg/GLPK or the COIN-OR tools. Glancing at it, though, it isn't obvious to me how to formulate it linearly. How would you do it?