High Pass Filter Calculator

The high pass filter is a type of filter circuit that is used to attenuate frequencies above a cut-off frequency fC.

A high pass filter consists of a resistor and capacitor in series, with the output taken across the resistor.

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There are three calculators on this page designed to aid in the design and understanding of high pass filters:

1) High pass filter cut-off frequency calculator

2) High pass filter capacitor selection calculator

3) High pass filter resistor selection calculator

High Pass Filter Cut-Off Frequency Calculator

The high pass filter cut-off frequency calculator can be used to calculate the cut-off frequency. Two inputs are required: (1) the resistance of R1, and (2) the capacitance of C1. Based on these values, the calculator will provide the cut-off frequency.

The mathematical formula for the cut-off frequency in terms of the resistance of R1 and capacitance of C1 is given by:

f_C = \frac{1}{2 \pi R_1 C_1}

High Pass Filter Capacitor Selection Calculator

The high pass filter capacitor calculator can be used to calculate the value of capacitor needed to create a filter with a specific cut-off frequency.

It requires two inputs: (1) the desired cut-off frequency, and (2) the resistance of R1.

The mathematical relation for the capacitance of C1 in terms of the cut-off frequency fC and resistance of R1 is given by:

C_1 = \frac{1}{2 \pi f_C R_1}

High Pass Filter Resistor Selection Calculator

The high pass filter capacitor calculator can be used to calculate the value of resistor needed to create a filter with a specific cut-off frequency.

It requires two inputs: (1) the desired cut-off frequency, and (2) the capacitance of C1.

The mathematical relation for the resistance of R1 in terms of the cut-off frequency fC and capacitance of C1 is given by:

R_1 = \frac{1}{2 \pi f_C C_1}

If these calculators didn’t help, check out our other calculators for electronics or our comprehensive tutorials!