Why do you need a filter with lots of poles? (9 - Passive Filters)

Let's look at the Cauer form for multi-pole filters.  What effects do multiple poles and zeros have on the transfer function of a circuit?

Aaron Danner is a professor in the Department of Electrical and Computer Engineering at the National University of Singapore.
http://danner.group

Video filmed and edited by Cheryl Lim.
@randomcheryl