TechOverflow Logo
TechOverflow

How to compute RC cutoff frequency in Python using UliEngineering

You can easily compute the RC cutoff frequency using the UliEngineering Python library:

rc_cutoff_frequency.py
from UliEngineering.Electronics.RC import rc_cutoff_frequency
from UliEngineering.EngineerIO import *

# Compute RC cutoff frequency for 10kΩ and 100nF
freq = rc_cutoff_frequency("10k", "100nF")
print(f"RC cutoff frequency (10k, 100nF): {format_value(freq, 'Hz')}")

# Compute RC cutoff frequency for 1kΩ and 1µF
freq = rc_cutoff_frequency("1k", "1uF")
print(f"RC cutoff frequency (1k, 1µF): {format_value(freq, 'Hz')}")

Example output

rc_cutoff_frequency_output.txt
RC cutoff frequency (10k, 100nF): 159 Hz
RC cutoff frequency (1k, 1µF): 159 Hz

The RC cutoff frequency is the frequency at which an RC low-pass filter attenuates the signal by 3dB (approximately 70.7% of the input amplitude). Below this frequency, signals pass through with minimal attenuation, while above this frequency, signals are increasingly attenuated. This frequency is fundamental to filter design and determines the bandwidth of RC filter circuits.

The cutoff frequency is computed using the formula: $f_c = \frac{1}{2\pi RC}$, where $R$ is the resistance in ohms and $C$ is the capacitance in farads. The result is in hertz.

Check out similar posts by category: Electronics, Python