EGR 101
Introduction to Engineering
Through
Applied Science I
Prof. Robert C. Helgeland
Department of Electrical and Computer Engineering
Office: Room 324B – Dion Building
Telephone – 508-999-8487
Email address – rhelgeland@umassd.edu
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Educational/Professional Background
• BSEE
– University of Massachusetts Dartmouth
• MSEE
– Northeastern University
• Registered Professional Engineer
– Commonwealth of Massachusetts
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Areas of Interest -- Teaching
• Circuit Theory
– Basic Circuit Analysis and Simulation
• Electronics
– Analog and Digital
• Electromechanical Energy Conversion
– Motors, Generators
• Power Electronics
– Power Supplies, Inverters, Power Control
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Circuit Theory
U1
+
25.000 V
DC 1MOhm
V2
R2
10 Ohm
R1
80 Ohm
4 V/V
R3
60 Ohm
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R4
20 Ohm
R5
30 Ohm
4
Electronics
OnOff
Key = S
K1
R
68kOhm
V1
12 V
8
U1
K
VCC
4
RST
OUT 3
7
DIS
6
THR
2
TRI
5
CON
1m H 100 Ohm
LED1
R2
220 Ohm
GND
1
LM555CN
V2
9V
C
20uF
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Electromechanical Energy Conversion
CW
STOP
2.5 V
A
B
2.5 V
2.5 V
U3F
C
2.5 V
D
2.5 V
U4
13
L1
12
7404N
10
15
10
9
4
11
5
1
3
14
2
1
A
QA
B
QB
C
QC
D
QD
~U/D
MAX/MIN
CLK
L2
7404N
7
13
3
12
U2
1
2
13
3
1C
~1G 1Y1
A
B
15
14
4
Q2
2N2222A
7404N
1Y0
1Y3
2Y0
2Y1
~2C 2Y2
~2G 2Y3
6
4
U3C
9
10
5
11
6
Q3
2N2222A
7404N
1N4004
L4
12
100mH
Pause
U3D
9
Key = P
R3
100mH 1.0Ohm_5%
D3
5
1000Hz 5V
Key = Space
1.0Ohm_5%
1N4004
L3
7
74155N
Direction
R2
100mH
D2
6
1Y2
V1
1N4004
2
U3B
~RCO
74191N
7408N
3
2
~CTEN
~LOAD
Q1
2N2222A
U3A
1
2
3
4
5V
1
U5A
1.0Ohm_5%
D1
U1
11
U3E
7404N
R1
100mH
DCD_HEX
VCC
2.5 V
8
Q4
2N2222A
R4
1.0Ohm_5%
D4
1N4004
Vmotor
12V
7404N
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Power Electronics
XSC1
XFG1
G
T
A
B
Q1
IRG4BC10U
V1
24 V
L1
250uH
C1
47uF
D1
DIODE_VIRTUAL
EGR 101
R1
10 Ohm
+
U1
13.164 V DC 1MOhm
-
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Areas of Practical Experience
• Marine Electronic Systems
– Radar
– Communications
• AM, FM, SSB, SATCOM
– Echo Sounding and Sonar
• Water Depth, Fish
– Navigation
• GPS, Loran C, Electronic Charting
– Vessel Control
• Autopilots
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Radar
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Communications
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Echo Sounding and Sonar
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Navigation
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Electronic Charting
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Vessel Control
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Commercial Fishing
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Tugs and Towing
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Military
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Passenger Ferries
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Specialty Transportation
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Oceanographic Research
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Recreational
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Restoration
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Classroom Activity #1
• Introduce yourself to the class
– Name
– Home town and high school
– Major
– Why you chose Engineering
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