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The Hong Kong University of Science and Technology
Department of Electronic and Computer Engineering
E
LEC
101
BASIC
ELECTRONICS
F
ALL
2010
HOMEWORK#3
Due date: Dec 7, 2010, Tuesday (5:00pm)
Q1. Assuming that the switch has been in position 1 for a long time, at time t = 0 the switch is moved
to position 2. Calculate the voltage v(t) for t > 0. (ans:
V
e
t
436
.
0
12
).
Q2. Find the i
1
(t) for t > 0, when the switch opens at t = 0.
(ans:
A
e
t
15
15
.
1
2
.
0
).

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Q3.
Plot V
o
as a function of V
i
, for V
i
from -10V to 10V in the circuit.
Q4.
In the figure, it shows a zener diode voltage regulator circuit