Analog Second Order Filters

By going to second order filters we were able to shorten the transision band providing greater attenuation of the noise. We were also able to make a bandpass filter using second order design. Also note that compared to first order filters these circuits only require the addition of one capacitor.

Schematics and Graphs

Lowpass Filter:


Highpass Filter:


Bandpass Filter:


Once again some pictures for those of you you have not entered the lab recently:


What a mess!


A bandpass enters the game.


Close up of our second order filters.