RL cutoff frequency calculation

Calculators and formulas for calculating the cutoff frequency of a coil and a resistor

RL cutoff frequency calculator


This function can be used to calculate the cut-off frequency of a coil and a resistor, or the inductance or the resistance. Two of the values ​​must be known in order to calculate the third.

Cutoff frequency calculator

  What should be calculated?
 Input
Inductance
Cutoff frequency
Resistance
Decimal places
 Results
Inductance
Cutoff frequency
Resistance

Formulas for the RL cutoff frequency


\(\displaystyle R\) Resistance

\(\displaystyle L\) Induktivität

\(\displaystyle f \) Grenzfrequenz

Formula for calculating the resistance

The resistance is calculated according to the following formula. The frequency \(\displaystyle f \) and the inductance \(\displaystyle L\) must be known.

\(\displaystyle R=2 · π · f · L \)

Formula for calculating the inductance

The inductance is calculated using the following formula. The frequency \(\displaystyle f \) and the resistance \(\displaystyle R \) must be known.

\(\displaystyle L=\frac{R}{2 · π · f }\)

Formula for calculating the cutoff frequency

The frequency is calculated using the following formula. The resistance \(\displaystyle R \) and the inductance \(\displaystyle L \) must be known.

\(\displaystyle f=\frac{R}{2 · π · L }\)

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