anonymous
  • anonymous
1.) Consider a 1st order RC-low pass filter where the C is fixed but R is variable. How will the cut-off frequency change when a) R is minimum? and b) R is maximum? Sketch qualitatively the characteristics. 2.) A low pass filter (LPF) is to be designed with C= 0.01 microfarad and a cut-off frequency of 1000 Hz. What value of R is to be used?
Physics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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radar
  • radar
The formula for Fc of a 1st order RC low pass filter is Fc=1/(2PiRC) for part 1 analyze the behavior of Fc as R is varied both low and high.
radar
  • radar
For 2.) substitute 1,000 for Fc and 10^-8 for C and solve for R
radar
  • radar
I would guess a 5% 16KOhm resistor would suffice.

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anonymous
  • anonymous
how to sketch the characteristic in no. 1 question?
radar
  • radar
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anonymous
  • anonymous
thanks a lot :)

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