Thursday, November 2, 2017
RLC Series Resonant Frequency Calculator
When a capacitor, resistor and inductor are connected in series, a series resonant circuit is formed. A series resonant circuit has a frequency response that has a minimum reactance and maximum gain at the resonant frequency. The series resonant circuit effectively acts as a bandpass filter.
The resonance frequency for a series resonant circult can be calculated with the formula:
fr = 1/2*PI*SQR(LC)
Where
Fr = Resonant Frequency in Hertz
PI = 3.14
L = Inductance in Henries
C = Capacitance in Farads
The formula can be derived by equating the inductive reactance to the capacitive reactance in a series circuit and then solving for the frequency.
Series Resonance Frequency Calculator
To calculate the resonance frequency, you can use the calculator below. For the calculator, enter in the inductance and capacitance. The resulting resonant frequency is then calculated. You can also use the up and down arrow keys to change the values of inductance and capacitance and compute the resonant frequency in real time. For calculating the resonant frequency, the resistor value is not needed. The resonant frequency is only dependent on the inductance and the capacitance.
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