RC lowpass filter | Electronics › Electronics › RC lowpass filter This topic has 0 replies, 1 voice, and was last updated 4 years, 5 months ago by Hossein. Viewing 1 post (of 1 total) Author Posts April 8, 2019 at 4:35 am #5012 HosseinParticipant Hello every body. I want to design simple rc lowpass filter. Base of formula, the cut-off frequensy is relative to 1/(RC)^1/2. So for a desired frequency, there is a lot of choice for R and C values. Now, how to choose the best R and C values? Thanks. Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In