58 Phasors in action

58 phasors in action

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Unformatted text preview: 10/26/09
 Phasors

 for
AC
Circuit
Analysis

 Theory
and
Lab
data
 obtained
with

 Sinusoidal
signals
 ©
2009
A.
Ganago
 Phasors
in
AcCon
 1
 DC
and
AC
Voltages
and
Currents
 •  DC
currents
and
voltages
are
constant
values
 •  AC
currents
and
voltages
are
sinusoids,
which
 differ
by
their
amplitude
A
and
phase
shiK
φ;
 we
need
to
keep
track
of
both
A
and
φ
 ©
2009
A.
Ganago
 Phasors
in
AcCon
 2
 Lab
example:
Green=IN,
Blue=OUT
 Lab
example:
Opposite
Sign
of
φ
 ©
2009
A.
Ganago
 Phasors
in
AcCon
 3
 ©
2009
A.
Ganago
 Phasors
in
AcCon
 4
 Real
and
Complex
Numbers
for
Circuits
 •  We
calculate
DC
currents
and
voltages
by
 using
real
numbers

 •  We
use
complex
numbers
for
AC
voltages
and
 currents,
because
com...
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This note was uploaded on 12/06/2010 for the course EECS 314 taught by Professor Ganago during the Spring '07 term at University of Michigan.

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