3455 ECE ELECTRONICS HOMEWORK #6 Due Date: October 20, 2005
Problem 6.1: Assume ideal op amps. a) Find the voltage gain, vo/vs. b) Find the input resistance seen by the source.
Problem 6.2: Assume ideal op amps. a) Find the voltage gain, vo/vi. b) Find the input resistance, vi/ii. c) If vi = 2[V], find vq.
+15[V]
3.3[k] 15[k] +15[V] + -15[V] 18[k] vq
ii
+ -
vi
1.2[k] 5.6[k] vo +
2.2[k]
+15[V] + -15[V]
39[k]
4.7[k]
-15[V]
Problem 6.3: For the circuit given below, assume ideal op amps. a) Find the transfer function, H() = Vo/Vi . b) Find the number of poles and the number of zeroes for this transfer c) function. Find the values of the poles and zeroes for this transfer function.
R1 = 1[k]
vi
+
R3 = 3.3[k]
+
C1 = 2.2[F]
R2 = 2.2[k]
C2 = 0.1[mF]
vo C3 = 0.01[mF]
L1 = 3.3[mH]
+
R4 = 4.7[k]
-
L2 = 39[H]
Problem 6.4: Assume ideal op amps. Find vO.
56[k]
15[V]
+5[V]
47[k]
+
-15[V]
3.3[k] 8.2[k] vO +
15[V]
7.2[k]
+
-15[V]
4.7[k]
-
-15[V]
Num...