58 Phasors in action

Ganago phasorsinaccon 16 0 current hasmax attt

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Unformatted text preview: e,
L
=
5
mH,
f
=
4
kHz;
note
that
 ω=2πf
=
2.513e4
rad/sec;
thus
ZL
=
+j
125.7
Ω

 •  ZL
increases
with
the
frequency
ω
 •  ZL
=
0
when
ω
=
0;
ZL
∞
when
ω
∞
 ©
2009
A.
Ganago
 Phasors
in
AcCon
 10
 Formulas
for
Impedances
(3)
 •  Impedances
are
measured
in
ohms
and
used
 as
resistances
 •  All
formulas
apply:

 •  in
series,
impedances
add;

 •  in
parallel,
their
reciprocals
add;

 •  voltage
division
and
current
division
work;
 •  “Golden
Rules”
for
Op
Amps
are
valid.
 ©
2009
A.
Ganago
 Phasors
in
AcCon
 11
 When
You
Can
Use
Phasors
 •  Phasors
are
used
in...
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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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