Effective Component Selection Method

This article deals with minimizing errors caused by selection of passive components from production preferred values. For example, the E24 series of passive components only has 24 values per a decade, so the exact calculated value of the components must be rounded to the nearest value in the series. This rounding to an inaccurate value creates the error. The article describes several methods of minimizing this error and introduces a new method called “Effective Component Selection Method” that eliminates disadvantages of the previous methods. The principle is to select the components in such a way that the errors caused by the rounding of the individual circuit components cancel each other out in the resulting function of the circuit. This is achieved by optimization and by using the circuit's degrees of freedom that are independent on its required function.