In Chapter 10, we looked at multivibrator circuits and oscillator circuits. In this chapter, we will look at filters. We will study both passive and active filters, learning how they work. We will restrict the analysis to the basic low and high pass filters as filters can be a book on its own.
We will use the response of filters to show what complex numbers are and how they can be related to the argand or phasor diagram and circuit impedances, explaining how we can use them to analyze electrical circuits.
