ECEN4797/5797 Lecture #3 Announcements • Homework 1 is due in class on Friday, Sept. 2. The grace-period for off- campus students expires 5pm (Mountain) on Friday, Sept. 9. • I will be away on a trip, August 27 to September 1 • No classes or office hours during this time. E-mails will be answered No classes or office hours during this time. E mails will be answered • Lecture schedule and make-up classes: • Today • Lecture 3 • Lecture 4: 3-4pm • Next Friday, September 2 • Lecture 5: 2-3pm • Lecture 6: 3-4pm ECEN5797 1
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ECEN4797/5797 Lecture #3
Announcements
• Homework 1 is due in class on Friday, Sept. 2. The grace-period for off-campus students expires 5pm (Mountain) on Friday, Sept. 9.
• I will be away on a trip, August 27 to September 1
• No classes or office hours during this time. E-mails will be answeredNo classes or office hours during this time. E mails will be answered
• Lecture schedule and make-up classes:
• Today
• Lecture 3
• Lecture 4: 3-4pm
• Next Friday, September 2y, p
• Lecture 5: 2-3pm
• Lecture 6: 3-4pm
ECEN5797 1
ECEN5797
Inductor voltage and currentSubinterval 1: switch in position 1
LiL(t)
Inductor voltage
C R
+
v(t)
+ vL(t) –iC(t)
+–Vg
Small ripple approximation:–
Solve for the slope:
ECEN5797
Inductor voltage and currentSubinterval 2: switch in position 2
L
+
i (t)
+ vL(t) – iC(t)
+
Inductor voltage
C R v(t)
–
iL(t)+–VgSmall ripple approximation:
Solve for the slope:
ECEN5797
Inductor voltage and current waveforms
vL(t)L( )
DT tDTs Ts
iL(t)
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