Unformatted text preview: bootstrapping. R 1 R 3 R 4 C 2 C B 1 C B 2 C 1 V CC v L v S R L R E R 2 Analyze using both circuit theory and feedback theory how bootstrapping can increase the input impedance. To aid you in your analysis, follow the steps given below. 1) Draw the small-signal, a.c. equivalent circuit at mid-frequency for both circuits and compare their input impedance. 2) Draw the small-signal a.c. equivalent circuit at mid-frequency for both circuits without feedback and compare R i . 3) Determine β v and calculate the closed loop R if for both circuits....
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- Fall '08
- Input impedance, Buffer amplifier, ri., R2 R3 R4, vS R2 R3, C1 vS R2