Enter the resistance and capacitance of a simple first order low pass filter into the calculator to determine the cutoff frequency.
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Cutoff Frequency Formula
The following formula can be used to calculate a cutoff frequency.
f = 1/ 2 * pi * R * C
- Where f is the cutoff frequency (hz)
- R is the resistance (ohms)
- C is the capacitance (farads)
Cutoff Frequency Definition
A cutoff frequency is defined as the frequency at which an electrical systems starts to reduce the amount of energy it lets through.
Cuttoff Frequency Example
How to calculate cutoff frequency?
- First, determine the resistance.
Measure the resistance in ohms of the low pass filter system.
- Next, determine the capacitance.
Of the same system, measure the capacitance in microfarads.
- Finally, determine the cutoff frequency.
Calculate the cutoff frequency using the formula above.
A cutoff frequency is a certain frequency in which the system starts to reduce the amount of energy it lets pass through begins to be reduced.