Band Pass Filter

To pass frequencies between 1 kHz and 30 kHz and weaken higher or lower frequencies we can use a band pass filter. Vary left signal generator frequency and notice amplitude strength after filter on right side. The high pass frequency filter is left of ground connection - low pass frequency filter is right of ground connection. Same formula to calculate capacitor values. We assume 10 k ohm resistors to start calculations. Cutoff frequency = 1/ 2π RC High Pass Capacitor value = 1/ 2π times 1000 times 10000 = 15.9 nf. Low Pass Capacitor value = 1/ 2π times 30000 times 10000 = 531 pf. or preferred value 560 pf.

published 10 years ago