Lab8 Prelab

• Preparation:
  • 1- Use AC sweep in PSpice (Start Freq=1, End Freq=1G, Points=100) after changing V_sin to 1 Vac in fig. 8-1, show circuit schematic and trace ratio V_out/V_in (V_out is across R_L and V_in is V_sin) in dBs or 10log10(V_out/V_in), label the two 3-dB lower and higher frequency points where the ratio is equal to max(V_out/V_in) -3 dBs, what are the two frequencies found?
  • 2- Repeat all the above after changing all 3 capcitor values to 10u.
  • 3- Explain the difference in results caused by decreasing capacitors values.

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