[SOLVED] Output voltage of a RC High Pass Filter

[AJAB]

Hi,

I have a RC high pass filter. How do I calculate the output voltage?
Ckt is as attached.




As I know gain = vout/vin = ωRC/1+ωRC... R=R1+R2
Hence the gain magnitude can be calculated using the above transfer function.
Do I just multiply by the input voltage to the gain magnitude to get the output voltage?

Thanks,
AJAB.

 

[shar2013]

Thats true, just : |Vo/Vi|=wR2C /sqrt (1 +(w*(R1+R2)*C)^2)

 

[LvW]

Your expression for Vout/Vin is NOT correct.
At first, R2 (not R) appears in the numerator.
But more important: The transfer function is complex - thus, you must apply complex calculations for finding the magnitude and phase.

 

[AJAB]

I write Vout/Vin = R2/R1+R2+XC where XC = 1/wC... yes..got it.

I wrote a wrong expression.
Thank you shar2013, LvW.