Basic Filter Circuits Explained
- Posted by doEEEt Media Group
- On August 17, 2022
- 0
In the RC low-pass filter, the path to the ground goes through a capacitor, which means impedance will decrease with increasing frequency. Therefore, in this circuit, the ratio of the Vi down to the Vo will depend on the values of R and C and the signal’s frequency. With high frequencies, impedance is low, and energy is sent to the ground as Vi is divided. Low frequencies see a higher impedance, sending energy to the output.