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Electric circuits miscellaneous

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Electric circuits miscellaneous
  1. The circuit shown is a

    1. low pass filter with f3dB =
      1
      		 rad / s
      (R1 + R2)C
    2. high pass filter with f3dB =
      1
      		 rad / s
      R1C
    3. low pass filter with f3dB =
      1
      		 rad / s
      R1C
    4. high pass filter with f3dB =
      1
      		 rad / s
      (R1 + R2)C
Correct Option: B

Vo
 = -
R2
VinR1 +
1
sC1

= -
sC1R2
sC1R1 + 1

It is HPF transfer function .


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