ECE256
Project 01: To develop a Guess a number game.
The rules of the game are :
Computer proposes an integer number in range 1.100 and a player should guess it.
At every step of the game, player tells the computer his assumption about a number and
comput
Homework01 ECE 256
1. Write a C# Console application that converts a mile into its equivalent metric kilometer measurement.
The program asks the user to input the value of miles to be converted and displays the original miles
and the converted value . Tes
Project02 ECE256
Deliverables:
1. UML diagram
2. Zipped project folder and a word document of your code and screen shot.
2. A community has 7 swimming pools, as shown in the following map.
Your project must satisfy the following requirements:
1. Create th
Homework04 ECE 256
1. Develop a Windows Forms Application to solve Problem 2, Homework03, in which a
list box is used to display the outputs.
2. The factorial of a nonnegative integer n is written n! (pronounced n factorial)
and is defined as follows:
n!
California State Polytechnic University, Pomona.
Electrical and Computer Engineering Department
ECE 220
Homework #1
For each problem below: Explain each step in your solution and
what the problem implies to you as a designer.
For a silicon (Si) small sign
B. OLSON
ECE 220
Homework7- solutions
1)
a) Determine Vo and the mode of operation that the MOSFET is in when: Vin=.2V
Vin = Vgs < VTN
=> Cutoff
=>Vo = 3.3V
b) Determine Vo and the mode of operation that the MOSFET when: Vin=1.1V
Vgs VTN Transistor is ON
B. OLSON
ECE 220
Homework 8 SOLUTIONS
Small Signal Problems
1)
dIc
d
dVCE dVCE
I
Vce 1
V /V
I S eVBE / VT CQ
I C I S e BE T 1
V A V A
VA
2) An amplifier is characterized as follows:
Gm = -10mA/V
Ri = 2.5K ohms
Ro = 1K ohms
a) Determine the Voltage Gai
B. OLSON
ECE 220
Homework 8
Small Signal Problems
1)
Show that for a BJT
I CQ
1
dIc
for a given Q-point. You may assume that VBE is a constant
ro dVCE V A
Vce
Vce
and I CQ I S eVBE / VT 1
I S eVBE / VT
I C I S eVBE / VT 1
VA
VA
2) An amplifier i
B. OLSON
ECE 220
Homework 2-SOLUTIONS
Rectifiers
1) For the circuit shown assume a sinusoidal voltage with an amplitude of 4Volts centered at DC is applied to the
circuit shown below (Vs = 4 sin(2 f t). Sketch the output (indicate the peak voltage(s). Use
B. OLSON
ECE 220
Homework6- solutions
1)
a)
b)
c)
d)
MOSFETS
For NMOS transistors Vs < Vd. The terminals on the bottom are all sources
Vg
(V)
1
1.2
2
1.4
Vs
(V)
0
1
.5
.5
Vd
(V)
.2
2
1.2
1.6
Vgs
Vgs < VTN
1
.2
1.5
1.1
No
yes
No
No
Vdsat =
Vgs-VTN
.3
-.8
.
B. OLSON
ECE 220
Homework 7
1) (some are tricky) For the amplifier below assume: Kn = 200uA/V 2, VTN = .7V
Suggested strategy: Make an educated guess and verify your guess
a) Determine Vo and the mode of operation that the MOSFET is in when: Vin=.2V
b) De
B. OLSON
ECE 220
Homework 6
MOSFETS
1) Assume that VTN = .7V. Determine the mode of operation for the transistors shown
0 .2 V
1V
2V
1 .2 V
0V
1V
(a)
2)
1 .2 V
1 .6 V
2V
(b)
1 .4 V
0 .5 V
0 .5 V
(c)
(d)
Assume that VTP = -.7V. Determine the mode of operat
B. OLSON
ECE 220
Homework 6 - SOLUTIONS
Amplifier Biasing
1) For the amplifiers shown, determine the bias resistors necessary to achieve the desired operating point. You
may assume that VBE(ON) = .7 and = 100
a)
Vcc VoQ
1mA
5K
IbQ IcQ 10uA
VeQ IeQ Re IcQ
B. OLSON
ECE 220
Homework 4 SOLUTIONS
Bipolar Junction Transistors IV curves (contin)
You are responsible for being able to draw the IV curves that we go over in class and identifying the mode of operation
1) An npn transistor is biased in forward active
B. OLSON
ECE 220
Homework 6
Amplifier Biasing
1) For the amplifiers shown, determine the bias resistors necessary to achieve the desired operating point . You may
assume that VBE(ON) = .7 and = 100
(a)
(b)
12V
R1
12V
5K
R1
10K
V oQ = 7V
V oQ = 7V
R2
1k
1k
B. OLSON
ECE 220
Homework 3 - SOLUTIONS
Load Line Analysis
1)
a) Write an expression for the load line
(10V- 2V - VD)/R1 = ID
(8V-VD/1K=ID
b) Draw a graph showing the Q-point, the load line, and the curve for the diode
ID
8mA
Q point
Slope = -1/1K
8V
VD
Z
B. OLSON
ECE 220
Homework 4
Bipolar Junction Transistors IV curves
You are responsible for being able to draw the IV curves that we go over in class and identifying the mode of operation
1) An npn transistor is biased in forward active mode with VBE = .69
B. OLSON
ECE 220
Homework 2
Rectifiers
1) For the circuit shown assume a sinusoidal voltage with an amplitude of 4Volts centered at DC is applied to the
circuit shown below (Vs = 4 sin(2 f t). Sketch the output (indicate the peak voltage(s). Use a constan
B. OLSON
ECE 220
Homework 3
Load Line Analysis
1) For circuit shown
a) Write an expression for the load line
b) Draw a graph showing the Q-point, the load line, and the curve for the diode
10V
1K
Vo
2V
Zener Diodes and Voltage Regulators
2) Consider the Z
B. OLSON
ECE 220
Homework 1
1)
For the circuit shown
b) Determine the voltage across the diode (VD), Vo and the current through the diode (ID)
an ideal diode model
c) Determine the voltage across the diode (VD), Vo and the current through the diode (ID)
c
NMOS
Cutoff
Vs Vd
Kp W p Cox
L
Cutoff
Kn W nCox
L
Vgs VTN
Linear
PMOS
Vs Vd
VTP 0
Vsg VTP
VTN 0
Vs Vd
Vs Vd
Linear
Vdsat
Vdsat
Vgs VTN , (Vgs VTN ) Vds
Vsg VTP , (Vsg VTP ) Vsd
Vds 2
ID Kn (Vgs VTN )Vds
2
Vsd 2
ID Kp (Vsg VTP )Vsd
2
Saturation
Satur