Summary
As lengthy as this chapter has been up to
this point, it only begins to scratch the surface of filter design. A
quick perusal of any advanced filter design textbook is sufficient to
prove my point. The mathematics involved with component selection and
frequency response prediction is daunting to say the least -- well
beyond the scope of the beginning electronics student. It has been my
intent here to present the basic principles of filter design with as
little math as possible, leaning on the power of the SPICE circuit
analysis program to explore filter performance. The benefit of such
computer simulation software cannot be understated, for the beginning
student or for the working engineer.
Circuit simulation software empowers the
student to explore circuit designs far beyond the reach of their math
skills. With the ability to generate Bode plots and precise figures, an
intuitive understanding of circuit concepts can be attained, which is
something often lost when a student is burdened with the task of solving
lengthy equations by hand. If you are not familiar with the use of SPICE
or other circuit simulation programs, take the time to become so! It
will be of great benefit to your study. To see SPICE analyses presented
in this book is an aid to understanding circuits, but to actually set up
and analyze your own circuit simulations is a much more engaging and
worthwhile endeavor as a student.
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