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s
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all
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tr
o
l
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o
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atin
g
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n
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o
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t
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h
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o
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e
o
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er
all
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f
icie
n
c
y
o
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th
e
co
n
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ter
w
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ll
g
et
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cr
ea
s
ed
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d
also
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h
e
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ize
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ilter
w
i
ll g
et
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ed
u
ce
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g
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ea
t
er
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alu
e.
2.
T
H
RE
E
-
P
H
ASE
T
H
RE
E
-
L
E
VE
L
SO
F
T
SWI
T
CH
I
NG
DC
-
DC
CO
NVER
T
E
R
T
h
e
ar
r
an
g
e
m
e
n
t
o
f
t
h
r
ee
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p
h
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s
e
th
r
ee
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le
v
el
d
c
-
d
c
s
o
f
t
s
w
itc
h
in
g
co
n
v
er
ter
i
s
s
h
o
w
n
in
Fi
g
u
r
e
1
.
T
h
e
s
w
itc
h
es
S
1
-
S
6
ar
e
to
b
e
tr
ig
g
er
ed
in
s
u
ch
a
w
a
y
th
at
t
h
e
co
n
v
er
ter
g
e
n
er
ates
t
h
r
ee
lin
e
v
o
ltag
es
an
d
t
h
e
y
ar
e
d
is
p
lace
d
b
y
1
2
0
o
.
T
h
e
th
r
ee
-
p
h
a
s
e
d
elta
-
s
ta
r
s
tep
d
o
w
n
tr
an
s
f
o
r
m
er
i
s
u
s
ed
to
m
a
k
e
a
n
elec
tr
ical
is
o
latio
n
b
et
w
ee
n
s
o
u
r
ce
a
n
d
d
c
lo
ad
.
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h
e
tr
an
s
f
o
r
m
er
leak
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g
e
i
n
d
u
ct
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ce
s
L
l1
,
L
l2
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d
L
l3
ar
e
u
s
ed
alo
n
g
w
i
th
j
u
n
ctio
n
ca
p
ac
itan
ce
s
C
1
-
C
6
in
o
r
d
er
to
f
o
r
m
r
eso
n
an
ce
an
d
h
e
n
ce
Z
VS
co
m
m
u
tatio
n
is
p
o
s
s
ib
l
e
in
a
w
id
er
lo
ad
r
an
g
e.
T
h
e
r
ec
tify
i
n
g
d
io
d
es
D
R1
-
D
R6
ar
e
u
s
ed
to
co
n
v
er
t
s
tep
d
o
w
n
th
r
ee
-
p
h
a
s
e
ac
v
o
ltag
e
i
n
to
a
r
ec
tify
in
g
d
c
v
o
ltag
e.
T
h
e
f
ilter
ele
m
en
ts
L
f
an
d
C
f
ar
e
u
s
ed
to
m
a
k
e
th
e
r
ec
tif
ied
d
c
v
o
lta
g
e
in
to
p
u
r
e
d
c
v
o
ltag
e.
T
h
er
e
w
il
l
b
e
an
eq
u
al
d
ela
y
i
s
p
r
o
v
id
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et
w
ee
n
th
e
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n
tr
o
l
s
w
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h
e
s
S
1
,
S
4
an
d
S
3
,
S
6
a
n
d
S
2
,
S
5
in
o
r
d
er
to
p
r
o
v
id
e
s
o
f
t
s
w
itc
h
in
g
.
T
h
e
I
p1
,
I
p2
,
I
p3
an
d
V
p1
,
V
p2
,
V
p3
a
r
e
t
h
e
p
r
i
m
ar
y
c
u
r
r
en
ts
a
n
d
v
o
lta
g
es
o
f
tr
a
n
s
f
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r
m
er
s
1
,
2
an
d
3
r
esp
ec
tiv
el
y
.
V
i
n
S
4
S
1
S
5
S
2
S
6
A
B
C
i
p
1
i
p
2
i
p
3
V
p
1
V
p
2
V
p
3
+
-
+
+
-
-
-
-
-
+
i
s
1
i
s
2
i
s
3
T
1
T
3
T
2
b
c
D
R
1
D
R
3
D
R
5
+
-
V
r
e
c
t
L
f
S
3
D
R
4
D
R
2
D
R
6
C
6
D
2
D
6
C
2
C
4
D
4
D
1
C
1
D
3
C
3
D
5
C
5
C
f
V
O
F
ig
u
r
e.
1
.
Z
VS D
C
-
DC
Fu
l
l b
r
id
g
e
co
n
v
er
ter
3.
O
P
E
RAT
I
O
N
M
O
DE
S
T
h
e
o
p
er
atio
n
al
w
a
v
e
f
o
r
m
o
f
t
h
e
p
r
o
p
o
s
ed
d
c
-
d
c
co
n
v
er
ter
is
s
h
o
w
n
i
n
F
ig
u
r
e
2
.
T
h
e
v
ar
io
u
s
o
p
er
atin
g
m
o
d
es
o
f
t
h
e
f
i
v
e
l
ev
el
co
n
v
er
ter
ar
e
as
f
o
llo
w
s
.
T
h
e
F
ig
u
r
es
o
f
3
(
a)
to
3
(
k
)
s
h
o
w
t
h
e
o
p
er
atio
n
al
m
o
d
e
s
o
f
th
e
Z
V
S
DC
-
D
C
F
u
ll
b
r
id
g
e
co
n
v
er
ter
.
T
h
e
f
o
ll
o
w
i
n
g
a
n
al
y
s
i
s
is
m
ad
e
b
ased
o
n
th
e
ass
u
m
p
tio
n
th
at
t
h
e
b
lo
ck
in
g
ca
p
ac
ito
r
s
ar
e
lar
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e
en
o
u
g
h
to
ac
t a
s
a
co
n
s
tan
t v
o
lta
g
e
s
o
u
r
ce
.
3
.
1
.
O
pera
t
io
na
l
M
o
de
0
:
t
≤
t
0
B
ef
o
r
e
ti
m
e
t=
t
0,
th
e
s
w
i
tch
e
s
S
1
,
S
5
an
d
S
6
ar
e
o
p
er
atin
g
th
e
n
th
e
p
r
i
m
ar
y
w
i
n
d
i
n
g
o
f
tr
an
s
f
o
r
m
er
1
r
ec
eiv
in
g
a
p
o
s
i
tiv
e
li
n
e
v
o
lta
g
e
o
f
V
AB
a
n
d
t
h
e
p
r
i
m
ar
y
w
i
n
d
in
g
o
f
tr
an
s
f
o
r
m
er
3
r
ec
eiv
in
g
a
n
eg
at
iv
e
lin
e
v
o
ltag
e
o
f
V
CA
an
d
p
r
i
m
ar
y
w
i
n
d
i
n
g
o
f
tr
a
n
s
f
o
r
m
er
3
d
o
es
n
o
t
r
ec
ei
v
e
a
n
y
li
n
e
v
o
lta
g
e
w
it
h
r
esp
ec
t
to
Evaluation Warning : The document was created with Spire.PDF for Python.
I
J
PEDS
I
SS
N:
2
0
8
8
-
8
694
Th
r
ee
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P
h
a
s
e
Th
r
ee
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Leve
l S
o
f
t S
w
itch
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g
Dc
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Dc
C
o
n
ve
r
ter fo
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…
(
J.
S
iva
va
r
a
P
r
a
s
a
d
)
787
cu
r
r
en
ts
I
p1
, I
p2
an
d
I
p3
.
T
h
e
r
ec
tify
i
n
g
d
io
d
es D
R1
an
d
D
R2
ar
e
o
p
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atin
g
i
n
o
r
d
er
to
s
u
p
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l
y
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n
tin
u
o
u
s
c
u
r
r
en
t
to
lo
ad
an
d
it is
s
h
o
w
n
i
n
F
i
g
u
r
e
3
(
a)
.
Vp
a
=V
d
c
Vp
b
=
0
Vp
c
=
-
Vd
c
Vr
ec
=
Vsa
–
Vsc
=
k
(
Vd
c
+
V
d
c)
=
2
k
Vd
c
W
h
er
e
„
k
‟
is
t
h
e
s
ec
o
n
d
ar
y
to
p
r
im
ar
y
tu
r
n
s
r
atio
o
f
a
tr
an
s
f
o
r
m
er
.
3
.
2
.
O
pera
t
io
na
l
M
o
de
1
:
t
0
≤
t
≤
t
1
A
t
ti
m
e
t=
t
0
,
th
e
s
w
itc
h
S
5
is
tu
r
n
ed
o
f
f
u
n
d
er
Z
V
S.
So
,
t
h
e
ca
p
ac
itan
ce
C
5
s
tar
t
s
c
h
ar
g
i
n
g
w
h
er
e
as
th
e
ca
p
ac
itan
ce
C
2
s
tar
t
s
d
is
ch
ar
g
in
g
w
it
h
r
esp
ec
t
to
cu
r
r
en
ts
in
th
e
cir
cu
i
t.
B
ef
o
r
e
tim
e
t=
t
1
,
th
e
ca
p
ac
ito
r
C
2
is
f
u
ll
y
d
is
c
h
ar
g
ed
to
ze
r
o
an
d
th
e
co
r
r
esp
o
n
d
in
g
b
o
d
y
d
io
d
e
o
f
s
w
itc
h
S
2
i.e
,
d
io
d
e
D
2
i
s
o
n
.
T
h
er
ef
o
r
e
th
e
s
w
itc
h
S
2
is
r
ea
d
y
to
t
u
r
n
o
n
u
n
d
er
Z
VS.
T
h
e
tr
an
s
f
o
r
m
er
s
1
an
d
2
ar
e
o
p
er
atin
g
alo
n
g
w
it
h
r
ec
tify
i
n
g
d
io
d
es
D
R1
an
d
D
R2
in
o
r
d
er
to
s
u
p
p
l
y
cu
r
r
en
t to
lo
ad
an
d
it is
s
h
o
wn
in
F
ig
u
r
e
3
(
b
)
(
2
)
(
)
(
3
)
t
t
S
1
S
4
S
3
S
6
0
0
0
V
A
B
V
B
C
V
C
A
V
I
N
V
I
N
V
I
N
V
I
N
V
I
N
t
0
t
1
t
t
t
t
2
t
3
t
4
t
5
t
6
t
7
t
8
t
9
t
1
0
S
2
S
5
t
S
1
S
5
S
6
S
2
S
3
Fig
u
r
e
2
.
Op
er
atio
n
w
a
v
ef
o
r
m
s
o
f
th
r
ee
-
p
h
a
s
e
th
r
ee
-
le
v
el
d
c
-
d
c
co
n
v
er
ter
3
.
3
.
O
pera
t
io
na
l
M
o
de
2
:
t
1
≤
t
<
t
2
A
t
ti
m
e
t=t1
,
th
e
s
w
itc
h
S2
is
tu
r
n
ed
o
n
u
n
d
er
Z
VS.
T
h
e
s
w
itch
es
S1
,
S2
an
d
S6
ar
e
o
p
e
r
atin
g
th
e
n
th
e
p
r
i
m
ar
y
w
in
d
i
n
g
o
f
tr
an
s
f
o
r
m
er
1
r
ec
eiv
i
n
g
a
p
o
s
itiv
e
lin
e
v
o
ltag
e
o
f
V
AB
an
d
t
h
e
p
r
i
m
ar
y
w
i
n
d
i
n
g
o
f
tr
an
s
f
o
r
m
er
3
r
ec
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g
a
n
e
g
a
tiv
e
li
n
e
v
o
lta
g
e
o
f
V
CA
a
n
d
p
r
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m
ar
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w
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n
d
i
n
g
o
f
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an
s
f
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r
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d
o
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o
t
r
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e
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y
lin
e
v
o
lta
g
e
w
i
th
r
esp
ec
t
to
cu
r
r
en
ts
I
p
1
,
I
p2
an
d
I
p3
.
T
h
e
r
ec
tify
in
g
d
io
d
es
D
R1
a
n
d
D
R2
ar
e
o
p
er
atin
g
i
n
o
r
d
er
t
o
s
u
p
p
l
y
co
n
ti
n
u
o
u
s
c
u
r
r
en
t to
lo
ad
an
d
it is
s
h
o
w
n
in
F
ig
u
r
e
3
(
c)
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
0
8
8
-
8
694
IJ
PEDS
Vo
l.
8
,
No
.
2
,
J
u
n
e
2
0
1
7
:
7
8
5
–
7
9
4
788
3
.
4
.
O
pera
t
io
n
M
o
de
3
:
t
2
≤
t
<
t
3
A
t
ti
m
e
t=t2
,
th
e
s
w
i
tch
S
6
i
s
tu
r
n
ed
o
f
f
u
n
d
er
Z
VS.
So
,
th
e
ca
p
ac
itan
ce
C
6
s
tar
ts
ch
ar
g
i
n
g
w
h
er
e
as
th
e
ca
p
ac
itan
ce
C
3
s
tar
t
s
d
is
ch
ar
g
in
g
w
it
h
r
esp
ec
t
to
cu
r
r
en
ts
in
th
e
cir
cu
i
t.
B
ef
o
r
e
tim
e
t=
t
3
,
th
e
ca
p
ac
ito
r
C
3
is
f
u
ll
y
d
is
c
h
ar
g
ed
to
ze
r
o
an
d
th
e
co
r
r
esp
o
n
d
in
g
b
o
d
y
d
io
d
e
o
f
s
w
itc
h
S
3
i.e
,
d
io
d
e
D
3
i
s
o
n
.
T
h
er
ef
o
r
e
th
e
s
w
itc
h
S
3
is
r
ea
d
y
to
t
u
r
n
o
n
u
n
d
er
Z
VS.
T
h
e
tr
an
s
f
o
r
m
er
s
1
an
d
3
ar
e
o
p
er
atin
g
alo
n
g
w
it
h
r
ec
tify
i
n
g
d
io
d
es
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[7
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0
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N.S
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J.G
.
Ch
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.
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1
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[1
2
]
J.
R.
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n
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rb
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,
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8
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3
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Ya
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4
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.
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.
Hu
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