Pann Su
Homework
13
.
:
Magnetic
B6642259
Circuit
20NN a
Ni
(b)
Step-down
(c)
Step-up transformer
13
.
transformer :
No
N
:
a
=
x
=
(b)
Y
(C)
Resistance
=
Y (N)
=
N2 to
load
of
22(5)
=
N =Ol
Rated
21
(a) Turn ratio , d
=
This
is
the
I
=
40 A
connected to the
is
step-down
transformer .
N 15
NV
of the
=
v)N
load
=
=
5
:
low side .
=
Khine
1200)
Ve =8
=
=
Su
02
13 10 .
W
.
N
u
&
A
=>
(a) R
=
R2
(1)
CSOX 107 x100x104
1
=
Inductance
,
,
new
Rtotal
Rtotal
R
, Rs
7957
10010
Az
lz
=
=
100
co
30cm
75A-turns/lb
A-turns /Wb
.
=
0
.
377H
7957 75A-turns/Wb
.
x
Rgap
.
=
0
=
80 92
L
,
,
7957 75 A-turns/Wb
=
34480 92
maximum
:
33
.
yix17 100x104
R1 + R2 + Ro +
↳ new
10cm
=
llgapboxy
:
25 cm2
=
0x
=
=
=
:.
=
yix10x100x04
N2
Le
Rgap =lgap
The
182
=
3000 +
12
,
=
30x102
=
Az
,
3000 Mo
=
= 3000xyxxx
Rs
(2)
u
10 X
Ry
(b)
30cm
=
um
un
100 cm2
=
,
l
I
100 turns
=
gap
.
29H
.
would
=N2
=
be
0
.
by
53
=
7955 09Atusa
.