One of the convenient features of having access to a simulator is that you can try out complex designs without having to build them. Imagine doing all the mathematics for this band pass filter and dropping a decimal point somewhere - with Spicycle and SpiceAge you can test your design in a few moments and be confident that you got the correct component values.
With the value and temperature sweeping options, you can
also simulate the effect of component tolerances and temperature effects on sensitive
circuits.
Using the special 'Y display' modes, you can view the response as real and imaginary
components, or even plot the response as it moves around the complex plane as frequency
changes. For filters, the Group delay option gives invaluable information.
