# Butterworth filter : a lab example

**URL:** https://forum.liquidinstruments.com/t/butterworth-filter-a-lab-example/67
**Category:** Lab tutorials, exercises and use cases
**Created:** [April 17, 2021, 12:20am UTC](https://forum.liquidinstruments.com/t/butterworth-filter-a-lab-example/67 "2021-04-17T00:20:38Z")
**Posts on this page:** 1
**Page:** 1

<div class="post-metadata">

### Author: ![PaulC](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.liquidinstruments.com/paulc/32/23_2.png) [@PaulC](https://forum.liquidinstruments.com/u/PaulC)
#### Post date: [April 17, 2021, 12:20am UTC](https://forum.liquidinstruments.com/t/butterworth-filter-a-lab-example/67/1 "2021-04-17T00:20:38Z")

</div>

Op-amp based filters are a common lab experiment at the undergraduate level. In this [application note](https://www.liquidinstruments.com/blog/2021/03/23/overview-of-butterworth-filter-lab-mokugo-deployed-in-undergraduate-laboratory-experiment/), we describe how we used Moku:Go to understand the frequency response of Butterworth filter.