First Order Rc Low Pass Filter Calculator

First order RC low pass filters are essential in electronics for smoothing signals and reducing noise. Our calculator simplifies the process of finding the required component values.

1. Enter the desired cutoff frequency (in Hz).
2. Enter the required resistance (in Ohms).
3. Enter the desired capacitance (in Farads).
4. Click ‘Calculate’.

The transfer function of a first order RC low pass filter is given by:

H(s) = 1 / (1 + sCR)

The cutoff frequency (f_c) is given by:

f_c = 1 / (2πRC)

Comparison of Filter Types

Filter Type	Order	Cutoff Frequency (Hz)	R (Ohms)	C (F)
First Order RC LPF	1	100	1000	1.6e-9

• Always use high-quality components for accurate results.
• Consider the effect of component tolerances on filter performance.
• Use simulation software to verify filter performance.

What is the difference between a low pass and a high pass filter?

A low pass filter allows signals below a certain frequency to pass, while a high pass filter allows signals above a certain frequency to pass.

Learn more about RC filters from IEEE

Understand filter theory from Ryerson University