(a) Find the passband center frequency and the two cutoff frequencies.

(b) Design a circuit that would possess the above step response.

(c) Validate your design using Multisim.

12–81 A Tunable Tank Circuit The RLC circuit in Figure P12–81 (often called a tank circuit)

has R=4:7 kΩ, C = 680 pF, and an adjustable (tunable) L ranging from 64 to 640 μH

(a) Show that the circuit is a bandpass filter.

(b) Find the frequency range ðinHzÞ over which the center frequency can be tuned.

(c) Find the bandwidth ðinHzÞ at the end points of this range.

Transcribed Image Text:

V(t) +1 R ww V2(1) FIGURE P12-81