TECHCENTER

Now you are familiar with the band pass filter. Let’s design a filter for specific bandwidth. We will make a filter which allows the signals which have frequencies in the range of 80 Hz to 800 Hz.

F1 = 80 Hz
F2 = 800 Hz

For this example, we will make a simple passive RC filter for a given range of the frequency. So, we have to calculate the value of R1, C1, R2, and C2.

Circuit Diagram of Passive Band Pass Filter

We have to assume the value of resistance or capacitance. Here, we will assume the value of C1 and C2. For simple calculation, we will assume the same value for C1 and C2 and that is 10-6 F. And calculate the value of resistance according to this value of C1, C2, and F1, F2.

Now, we have all values and by these values we can make a filter which allows the signals with specific bandwidth.