analize the following circuit low pass filter circuit !

[gringo 8217]

how do you calculate your input voltage say were are working with 0v, +15v ,-15v
capacitor= 0.22µf
resistor=670
741 used
freq= 1080 hz
i have calculated the correct resistor value but just this won"t click for some reason !

 

[JimB]

It would be helpfull if you actually posted a schematic of your circuit.
From the information you have given, it is anybodies guess what you are asking.

JimB

 

[crutschow]

You have calculated the component values for a passive single-pole LP filter with a 1080Hz corner frequency and stated the available supply voltages. So what do you want the op amp do -- buffer the filter output, amplify the filter output, punt?

When you say "calculate your input voltage" do you mean the maximum input voltage before the output is distorted?

 

[MRCecil]

Assuming that you are referring to a unity gain non-inverting single pole low pass active filter with the components and rail voltages you listed, National's datasheet shows a +/-12V min and +/- 14V max output swing with a 10k loading, and for a 2k load 10 to 13V respectively. Don't confuse RMS and P-P voltages. Given the assumption of unity gain, what do you believe might be the maximum input voltage for a proper signal across the passband with the undisclosed loading of the output?

 

[crutschow]

I think the op has left the building.

 

[MRCecil]

Oh hell. I didn't look at the date...DUH!