EE411_Fall2011_Week05_Steinmetz_Phasor_Development.doc
1. Consider KCL and KVL equations. For example, for three branch currents leaving a node,
i1 + i2 + i3 = 0 .
2. For a linear circuit with sinusoidal excitation, with all sources having radian frequenc
EE411, Fall09, Op Amps
Op Amps
V
I
Vout
I+
V+
+
Assumptions for ideal op amp
Vout = K(V+ V ), K large (hundreds of thousands, or one million).
I+ = I = 0.
Voltages are with respect to power supply ground.
Output current is not limited.
Buffer Amplifier (c
Highlights_of_EE411_Notes_on_Second_Order_Systems_091104.doc
Series RLC Circuit
d 2i
dt 2
+ 2
di
2
+ o i = 0
dt
(5)
The natural (i.e., source free) response for any current or voltage in the network has the form
A1e s1t + A2 e s 2 t
2
The two values for s
EE411_Balanced_Three_Phase_Phasors.doc
Imaginary
Vcn
Vca = Vcn Van
Vab = Van Vbn
30
Real
Van
120
Vbn
Vbc =
Vbn Vcn
The phasors are rotating counter-clockwise.
The magnitude of line-to-line voltage phasors is 3 times the magnitude of line-to-neutral voltag
Notes on Nodal Analysis, Prof. Mack Grady, June 4, 2007
Definitions
Node:
A point or set of points at the same potential that have at least two branches
connected to them.
Branch:
A circuit element that connects nodes.
Major Node: A node with three or mor
EE411, Fall 2011, Test 2. 30 minutes, 1 problem. One sheet of notes permitted. Name:
Show all work on these pages. Do not unstaple. Make sure the trail to your answer is easy to follows
21. Find the Thevenin equivalent voltage, short circuit current, and
EE411_Fall2011_Week03_Op_Amps.doc
Op Amps
V
I
Vout
I+
V+
+
Assumptions for ideal op amp
Vout = K(V+ V ), K large (hundreds of thousands, or one million).
I+ = I = 0.
Voltages are with respect to power supply ground.
Output current is not limited.
Buffer A