Grading and Exams
Hour Exams (2) 30%
Final Exam 40%
Homework assignments will be on a weekly basis. Assignments and solutions will be posted
on the class web page. Assignments will be due in class on the date specified. N
Dept. of Electrical and Computer Engineering
University of Minnesota
The circuit shown below produces triangular waves at the output Vo when the switch Sw is
closed. The op amps are ideal except that their outputs satur
Problem 1 (35 pts).
A series-shunt feedback amplifier utilizes the feedback circuit shown below.
(a) What are the values of all four h parameters? R1 = 1 k and = 0.01.
(b) For the case RS = 1 k and RL = 1 k, sketch and
HW 3, summer 2016
12.2 (7th Edition)
12.5 Do not answer the question Compare these results to those for sine waves of peak
amplitude VCC and VCC/2, respectively.
VCE 1 = VCC V0
IE 1 = I + IL = I + V0 /RL
Problem 1 (50 pts)
If VBE of a BJT transistor is held constant, then IC increases by gm x 2
mV (that is gm multiplied by 2 mV) for every degree C increase in
For a device of rating at IC = 10 mA, find the change in collector
Materials to be studied for Midterm 1
2. Differential and multistage amplifiers (chapter 9, Sedra/Smith 7th Edition)
To page 666 which includes Example 9-7.
EE3115 Summer 2011
Due on Monday August 1st, 2011
Apply DeMorgans law to the followings :
1) F = AB + (C + A) D
2) F = A ( B + C ) + D
3) F = A B C
+ A (B + C )
Sketch a CMOS logic circuit that realizes the function
Due on Tuesday July 5, 2011
Fig. 7-28 (a)
Design the circuit of Fig. 7-32 (a) using a basic current mirror to implement the
current source I. It is required that the equivalent transconductance be 5
Due on Monday, July 11. 2011
(i) (13 pts) Draw the small signal model of the amplifier shown . The amplifier consists
of a common source and a source follower (common drain) .
(ii) (12 pts) Calculate value of the input resistance Ri
Due on Tuesday 06/21/2011
An NMOS transistor having Vt = 1 V is operated in the triode region with
small VDS . With VGS = 1.5 V, it is found to have a resistance rDS of 1 k.
What value of VGS is required to obtain rDS = 200 ?
Model the circuit of problem 5.61(a) (see Figure P5.61, p. 303, Sandra/Smith, 7 th
Edition) in PSPICE. Use breakout transistors and enter a simple LEVEL=1 model to
describe the transistor behavior.
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The Butterworth filter is one type of electronic filter design. It is designed to have a frequency
response which is as flat as mathematically possible in the passband. A
July 18, 2016
Study the circuit below :
1. Identify the type of feedback . Explain .
2. Calculate value of the feedback factor .
Study the class B amplifier circuit below , where v0(t) and i(t) are a function of time (t)