How does this circuit work?
How many volts should it be given?

 

What do you mean "how it works"?
Do you want a Laplace equation for its response, or just a description of its operation?

I don't understand the question "How many volts should it be given?"
That makes little sense.

 

A bandpass [not badwidth] filter will pass with minimal attenuation frequencies above a certain lower corner frequency up to an upper corner frequency. Above and below that range of frequencies the output will be 3 or more dB lower than the input.

 

How does this circuit work?
How many volts should it be given?

View attachment 174812

Hi,

The short answer is, "It doesn't".

That's because it is one heck of a crummy band pass filter, more like a band limiting filter.
The bandwidth is more than 1MHz which is very strange for a op amp BP filter.
My guess is that it has another application or else it is just not shown as connected properly.
So dont give it any volts
Instead, look for a better circuit there are lots out there.

 

Here is a tool to design -

http://iowahills.com/Downloads/Iowa Hills Opamp Filters.zip


Regards, Dana.

 

Here is another aide.

 

How does this circuit work?
How many volts should it be given?

View attachment 174812

an active band filter using an opamp.
As you know that amplification of an opamp is depending on Impedance feedback and impedance in.
This will answer you question.
If impedance feedback / impedance near to 1 then amplification is 1 approx.
When impedance feedback is build from capacitor and resistor in parallel you are able to calculate the impedance as function of frequency.
This is a measure for the band width.
Same applies to input impedance.

Please do the calculations with different values for imp in , imp out for different frequencies and plot this on paper.

Picbuster