ECE 250 Homework #3
Due 3/28/03
Book Problems: 1.26, 1.40, 2.36
Problem 1:
Vo
+
R6
2k
-
+
V1
FREQUENCY = 100
AMPLITUDE = 15
+
R4
1k
Vin
+
R5
1k
+
R3
1k
a) Which diode model should you use to solve this circuit?
b) By hand, plot Vo(t) and Vin(t).
c) Using PSpice and the Ideal_Diode model, plot Vo(t) and Vin(t).
d) By hand, plot the transfer curve Vo versus Vin.
e) What does this circuit do?
Problem 2:
For the circuits below,
a) Plot Vo(t) and Vin(t) by hand if Vin(t) is a ± 15V triangle wave.
b) Plot Vo(t) and Vin(t) using a Transient analysis in PSpice.
Circuit 1:
1k
Vo
-
+
Vin 1k
Circuit 2:
R1
1k
R2
1k
Vo
-
+
Vin
D4
You may want to use the following parts in your PSpice simulations: R, Ideal_Diode, Vtri, D1N4001. See sections 6.F and
6.F.1 of the PSpice manual for examples, but use source Vtri rather than Vpwl.