1.

Refer to the block diagram in Fig. 2-20. If A _V = 10 and B = 0.02, will the circuit oscillate? If not, calculate the required value of A _V.

Figure 2-20

2.

Refer to Fig. 2-20. If A _V = 150 and B = 0.01, will the circuit oscillate?

3.

Refer to Fig. 2-20. Assume B = -0.025. Calculate the value of A _V required to satisfy the Barkhausen criterion.

4.

Assume in Fig. 2-20 that V _out = 24 V p-p (volts peak-to-peak) and B = 0.01. Calculate A _V and V _in.

5.

Refer to Fig. 2-21. Assume L ₁ = 496.67 H and L ₂ = 9.93 H. Calculate the following: ( a) f _osc; ( b) the feedback fraction B; ( c) , , and ; ( d) X _T (net reactance) of the L ₂ C ₃ branch.

Figure 2-21

6.

Refer to Fig. 2-21. Assume that it is desired to obtain an oscillating frequency of 500 kHz. If , calculate: ( a) L _T; ( b) L ₁ and L ₂; ( c) , , and ; ( d) X _T of the L ₂ C ₃ branch.

7.

Refer to Fig. 2-22. If C ₁ = 14.54 pF and C ₂ = 435.27 pF, calculate...