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    RC High Pass Filter Calculator | RL High Pass Filter Calculator | Cutoff Frequency & Values

    Created by Md jony islam

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    Series Capacitor Calculator

    RC high-pass filter allows high-frequency signals to pass while attenuating lower frequencies. This tool simplifies filter design and is ideal for audio This tool calculates the overall capacitance value for multiple capacitors connected either in series.

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    Capacitor Series Connection in Circuit

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    Series Capacitor CalculatorI3I230 µFCnI1Power Supply+-C2C1© Online Works Tools15 µFCt = 10 µF
    Fig-1: Series Capacitor Circuit
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    What is the High-pass Filter?

    In electronics, a resistor capacitor high-pass filter is a crucial circuit that attenuates lower frequencies while permitting signals above a certain frequency to flow through. By assisting you in figuring out the cutoff frequency and the proper resistor and capacitor values for your filter, this calculator streamlines the design process.

    High-pass Filter Circuit
    Fig-1: High-pass Filter Circuit

    🙋 Check our Resistor Wattage calculator and discover

    What is an RC High-Pass Filter? - RC High-pass equations:

    The basic components used in fabricating the filter are resistors, abbreviated as R, and capacitors, abbreviated as C. RC high-pass filter circuit. The output is taken across the resistor after the input signal is given across the series combination. This filter enables passages of high frequency, above the cutoff frequency (fc), while restraining low frequency sound systems.

    How to Calculate Cutoff frequency?

    The cutoff frequency (fc) is where the output signal power drops to half (or -3dB) of the input power. It is given by:

    fc = 12𝜋RC

    For Example, Resistor R = 2KΩ (2000Ω), Capacitor C = 12µF

    fc = 12𝜋 × 2000 × 12 or, fc = 6.631Hz

    How to Calculate Capacitor?

    The capacitor is where the out-signal power drops to the power. It is given by:

    C = 12𝜋Rfc

    For Example, Desired cutoff frequency fc 1 khz (10000hz), Resistor R = 10KΩ (1000Ω)

    C = 12 × 𝜋 × 10000 × 1000 or, C = 0.0159µF

    How to Calculate Resistor?

    The Resistor is where the out-signal power drops to the power. It is given by:

    R = 12𝜋Cfc

    For Example, Desired cutoff frequency fc 10 Hz, Capacitor C = 47µF

    R = 12 × 𝜋 × 47 × 10 or, R = 338.6Ω

    What is an RL High-Pass Filter? - RL High-pass equations:

    An RL high-pass filter is created from a resistor (R) and an inductor (L) connected in series. This output is taken across the resistor after the input signal is given in the combination of the two resistors. At higher frequencies, the output signal of the resistor traverses through it, while the inductor output signal confines the same at lower frequencies.

    How to Calculate Cutoff Frequency Formula:

    The cutoff frequency (fc) is the frequency at which the output signal is reduced to 70.7% of the input signal. It is given by:

    fc = R2𝜋L

    For Example, Resistor R = 30Ω, Inductance L = 200µH

    fc = 302 × 𝜋 × 200 or,fc = 23873Hz

    How to Calculate Inductance?

    The inductance is the inductor at which the output signal is reduced to the input signal. It is given by:

    L = R2𝜋fc

    For Example, Desired cutoff frequency fc = 1khz (1000Hz), Resistance R = 1KΩ (1000Ω)

    L = 10002 ×𝜋 × 1000 or,L = 0.159H

    How to Calculate Resistor?

    The Resistor is where the out-signal power drops to the power. It is given by:

    R = 2𝜋Lfc

    For Example, Desired cutoff frequency fc = 2khz (2000Hz), Inductance L = 200µH

    R = 2 × 𝜋 × 200 × 2000 or, R = 2.51Ω

    Suggested Reading

    What is an RC High-Pass Filter?

    A resistor (R) and a capacitor (C) connected in series are used to construct the resistor-capacitor high-pass filter. The output side is taken across the resistor after the input box signal is supplied across the series circuit combination. Depending on the cutoff frequency (fc), this filter circuit allows higher frequencies to flow through while blocking low-frequency sound systems.

    RC High-Pass Filters conversion application

    RL High-Pass Filters conversion application

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    About the Author

    Md Jony Islam

    Md Jony Islam

    Jony is a passionate writer and web developer. He enjoys sharing insights about technology, web development, and design. When he's not writing, he loves hiking and exploring the outdoors.