01-10-2012 08:28 AM
I have attached a bandpass filter I have constructed and simulated. The frequency range of the band pass filter is 704 Hz to 2040 Hz. But the problem is even when I put 60Hz I am still getting the same input wave at the out. So, what's wrong with the circuit. If theres an error can someone please correct it for me. (Please explain in a simple and easy way to understand, cuz I am a newbie).
Thanks.
01-11-2012 06:40 AM
R1 and R2 are not connected to R3 and C2?
For future reference, attach the circuit file rather then a picture. The picture may show things being correct but there may be a simulation setting that is incorrect (which you will not see in the picture).
01-11-2012 08:33 AM
Without the connection which Tom pointed out your output is about what you would expect. The reactance of a 2 uF capacitor at 60 Hz is about 1300 ohms so the 39 ohm resistor has very little effect. You essentially have a 50% voltage divider.
Lynn