Exp No 4 Passive filter

Introduction Circuits with a response that depends upon the frequency of the input voltage are known as filters. Filter circuits can be used to perform a number of important functions in a system. Although filters can be made from inductors, resistors and capacitors most filter circuits are based upon op-amps, resistors and capacitors. Filter types and characteristics A filter is a circuit whose transfer function, that is the ratio of its output to its input, depends upon frequency. There are three broad categories of filter which are widely used:

Introduction Circuits with a response that depends upon the frequency of the input voltage are known as filters. Filter circuits can be used to perform a number of important functions in a system. Although filters can be made from inductors, resistors and capacitors most filter circuits are based upon op-amps, resistors and capacitors. Filter types and characteristics A filter is a circuit whose transfer function, that is the ratio of its output to its input, depends upon frequency. There are three broad categories of filter which are widely used:
Low-pass filters allow any input at a frequency below a characteristic frequency to pass to its output unattenuated or even amplified