N° of component 

Band-Pass 1 kHz Filter Using the 741 (CB250E)

This first order Butterworth filter is tuned to frequencies around 1 kHz. The frequency is given by C1, C2 and R2. In the section Mathematics for Electronics you can find formulas to calculations involving other frequencies. Power supply can range from 6 + 6 V to 12 + 12 V. Other operationals can be experimented.





Circuit Bench