Operating instructions

T102
is
connectecl
as
a
secondary
winding,
and
the
r-oltage
cler
elopecl
is
used
for
the
filaments
rif
\-101
ancl
\'104.
The
filaments
are
series
con_
necterl
acÌ'oss
the
winding
in
series
with
resistor
R101.
contacts
9
and
g
of
relay
K101,
and
con_
tacts
11
and
12
of
relay
K101.
c.
The
voltage
across
secondary
winding
1B_
14-75
of T102
is
supplied
to
the
h_v
rectifier
where
it
is
utilized
as
explained
in
paragraph
45.
47.
Analysis
of
6-volt
D-c
Operotion
(fig.
1e)
For
6-volt
d-c
operation,
the
input
voltage
is
supplied
directly
to
the
driving
coil
of
fila_
ment-voltage
vibrator
E102
(par.
45g)
and
to
the
coil
and
contacts
of input
vibrator
E101.
Vibrator
E101
develops
an
a-c
voltage
rvhich
is
supplied
to
the
primary
of
T102.
a.
The
6-volt
d-c
potential
required
to
ener_
gize
the vibrator
is
supplied
from
contact
B
of
J103
to
contact
B of
E101
througli
section
1
of
5101,
fuse
F104
(GV.
8A.),
paralleled
conracts
7 and
8 of
sections
1
and
2
of
5108,
normally
closed
contacts
28
and
24
of
relay
K101,
section
2
of
5101,
and
L101.
The
combination
of capac_
itor
C104
and
coil
L101
make
up
a hash
filter.
Sections
1
and
2
of
S103
are
connected
in
naral_
lel
to
prevent
burning
of
the
contacts.
b.
The
6-volt
d-c
potential
to
be
interrupted
at
contacts
2
and
5
of
E101
is fed
from
contact
B
of
POWER,
INPUT
receptacle
J10B
to
con_
tact
2
of input
vibrator
E101
through
section
1
of I'O\îER
SELECTOR
sr,r,itch
5101,
f,use
Fi04,
section
2
of
POWER
ON-OFF
switch
5103,
contacts
26
ancl 25
paralleled
by
contacts
27
and
28
of relay
K101,
section
B
of
5101,
winding
7-6
of
T102,
section
4,
front,
of
S101
and
L102.
The
6-volt
d-c
potential
at
terminal
7 of
T102
also
is
fed
to
contact
5
of
E101
through
the
primary
u'inding
Z-8
of
T102,
sec_
tion
1
of 5101,
and L104.
The
voltage
to
be
ìnterrupted
at contacts
1
and
4
of
E101
is
taken
l'rom
the
junction
of
contacts
25
and
2g
of K101
rrcl
is fed
to
terminal
4
of
TI02
through
section
of
5101. From
terminal
4
of.TI02,
the
voltage
32
is
fed
to
contact
1 of
E101
through
winding
4-3
of
T102,
section
2
of'
5101,
ancl
L10b.
The
r.oltage
at
terminaÌ
-1
of
T102
also
is
fed
to
con_
tact
4
of
E101
ilrlough
s-incling
4_5
of
"1102,
section
6,
front,
of
S101,
ancl
L108.
L101
through
L105
and
C104
throLrgh
C10g
are
hash
fiiters.
Capacitor
C10g
is
a lir-re
filter.
Capaci-
tor
CI12
is
a buffer
capacitor.
\\:hen
the
vibra-
tor
is
energized,
pulsating
cl_c
voltage
is
de_
veloped
across
u'indings
g_4_b
and
6_Z_g
of
T102.
The
secondary
circuits
of T102
are
the
same
as
described
in
paragraph
45.
c.
The
6-volt
potential
at
contact
B
of
POWER
INPUT
receptacle
J10B
also
is
sup_
piied
to
the
operating
coil
of
filament_voltage
vibrator
E102
through
section
1
of
S101,
fuse
F104, paralleled
contacts
Z
ancl
g
of
sections
1
and
2
on
5103,
normally
closed
contacts
28
and
24
of relay
K101,
section
1
of
3101,
and
con_
tacts
22
and
21
of relay
K101.
(Refer
to
pura_
graph
45g
for
circuit
details
of
vibrator
E102.)
d.
For
6-volt
operation,
the
heaters
of
V101
and
V104
are
connected
in
parallel.
The
6_volt
d-c
potential
required
for
the
heaters
is
taken
from
the
junction
of
contacts
25
and
2g
of
K101
and
is
suppliecl
through
contacts
T
ancì
g
of
K101
to
pin
2
of
V101,
and
through
section
b
of
5101
and
contacts
10
and
11
of
K101
to
pin
2
of
Y704.
Pins
Z
of
V101
ancl
V104
are
con_
nected
together
ancl
completed
to
ground
through
section
B
of
S101
and
contacts
1g
and
19
of
K101.
48.
l2-volt
D-c
Operotion
(fig.
20)
The
circuit
of
the
power
supply
for
l2_volt
operation
is
similar
to that
for
6-volt
operation,
except
for
the
addition
of
series
resistance
to
limit
the
current
to
the
vibrator
coils,
the
use
of different
taps
on
transformer
T102,
the
series
connections
of
the
heaters
of
V101
and
V104,
and
the
fuse
used.
a.
Voltage
for
the
clriving
coil
of
vibrator
E101
is
supplied
from
J103,
contact
B,
through
section
1
of POWER
SELECTOR
switch
5101,
fnse
F103 (72V.4A.),
parallel
contacts
?
and
8
on
sections
1
and
2
of
pOWER
ON_OFF
AGO
313A.