MIE346H1S 2019 ANALOG DIGITALELECTRONICS...
MIE346H1S_2019_ANALOG_DIGITALELECTRONICS_E.pdf-University of Toronto Faculty of Applied
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MIE346H1S 2019 ANALOG DIGITALELECTR...
MIE346H1S_2019_ANALOG_DIGITALELECTRONICS_E.pdf-University of Toronto Faculty of Applied
##### Page 1
University of Toronto
Faculty of Applied Science and Engineering
Final Examination, April 2019
Duration 2% hours
MIE346H1S
-
Analog
& Digital Electronics
1*
11
011) Dozy well
FAMILY NAME
I
LAST
NAME:
Please do not detach any pages except the equation sheet!
Instructor Matthew Mackay
Rules and Guidelines:
The examination is 10
minutes,
and is comprised of three (3) questions, worth a total of 100
points. You should attempt all questions.
The exam book contains 11 pages, including this one. You must answer all questions within the
space provided. If you require scrap paper, please ask an invigilator. Workings on scrap paper
cannot be submitted for marking. Use the back of the page for extra graded space when needed.
This exam is closed-book. No external material is allowed, such as lecture or tutorial notes,
midterms, final exams, books, or formula pages. Calculators and rulers are allowed.
Clearly highlight all final answers, and show all intermediate workings. We cannot give partial
marks if you do not.
GOOD LUCK!
Question 1
/25
Question 3
/30
Question 2
/
45
Total
/
100

##### Page 2
Student Number:
Last Name:
Question 1
-
Consider
the power supply
,
circuit below, which you are designing for a special application involving
high-
voltage DC output.
For both Part A and B, assume a CV model for the diodes, where
VD,,
=
5.5
V
(this larger-than-normal
forward drop is common for certain high-voltage diodes).
a) List what t'ou think are the two most
relevant
real-world
diode parameters
that one should consider in selecting rectifier
diodes for this design other than
1,'D0).
Assume that the power supply design goals and constraints are as follows:
AC Input
Secondan
of the transformer is rated at:
VSEC
=
2500
V (RMS.
Center-tapped)
f
=
50KHz
not
Hz'
Kegulator
Requires
II
I
,
,
, >
1550
V
to operate
correctly.
Produces re
g
ulated 1500
V
output.
Provides ripple rejection.
100
mA
Output Voltage:
VOUT
=
1500
V
Maximum Allowable Ripple: 210
mV
Parameter 1
Parameter 2
Workings
(if
needed)
H
Ii
_
/8
Page 2
/
11

##### Page 3
Student Number:
Last Name:
(b) To
rninlmi7e
the size and cost of the design you are to find the smallest possible capacitor value, C, and corresponding
regulator ripple rejection, RR, which will still meet the requirements from Part A. The overall power supply must function
correctly and produce the specified
VOUT
(i.e., the regulator must always operate correctly). Calculate the peak inverse
voltage seen by the rectifier diodes in your design.
/171
Page 3 / 11

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