Tra
ns
istor
Hea
ri
ng
. A
id
DISTRIBUTED
BY
Mo
I:
THA-100l
TRANSISTOR
WORLD CORP
ORATION
52,
Broadway,
New
York
4,
N.Y.
Manufactured
by
TOKYO
SHIBAURA
ELECTRIC
CO.,
LTD.
Prirllllld In Japan 92269
TOS
HIBA TRANS
ISTOR
Here's
good
news
for people who
are
hard
of
hearing.
Toshiba's
eleetronics
and
acoustics
experts
ha
ve now pro-
duced a
revolutionary
hearing
aid
using 4 transistors
.
- 2 -
HEARING
AID
MODEL-
THA-l00l
This
hearing
aid
is
ultraminiature
in
size, light
and
beautifully
desig
ned.
Your
hearing
worries
are
over
with
Toshiba's
latest
transistor
hearing
aid .
- 3 -
IN
STRUCTIONS FO R
USE
1.
For
Conversation
( 1 )
Tu
rn
the
mik
e·
telephone sw::ch to
the
P
luQ
Jack
MIC side
Tili,
can
ea
sily
be
done
with
a
fmg e rtip.
Next.
put
"PJ
ug
the e
ar
phone
in to the
ear
and
insert the plug
into
the
jack.
Th
ere
4 -
is no
need
to
take out
the
plug
thereafter
unl
ess
when
changing
earph
ones.
Always
be gure to hold the
plug
whe
n pul l
ing
it
out
of the jac
k.
Pulling
on
the
lin e
weakens
it
The plug
and
jack
are
des
igned
so
as not
Power"'OOd Volu
ml:'
to be eas ily
detachablc
·.
Control
$w!
lch
( 2 ) Be s
ure
that the
ea
rphon
e is
securely
in-
sert
ed
into
the
ear
If
loose.
howling sounds
some
times
aris
e.
le
other
CO,$e
Eor
pho ne /
-
5-
~
3 )
Power
and
Volume
Control
Switch
Po
wer &
Vo
lum
e
The
same
switch
is
used
for
Ca
n rol S
wdch
both
power
and volume
control.
Therefore, the
power
is
turned
on by
turning
the
switch
with
the
thumb
In
th e
directior; of
the
arrow. A light
click is
both
felt
and
audible
at
this
tim
e.
There are
figures
on
the
dial
,
and
the
Jarger
the
figure
the
louder
the
sound.
Choose
the
figure
best suited
to
your hea
r-
ing.
6 -
2.
For
Telephoning
Th
e rece iv
er
can
be
placed
near
the
mil<e (ce
nter
of
the
triangle
)
but
external
noises will
also
be
heard
.
Therefor
e,
turn the
switch
to
the
TEL
side.
Th
en
hold
the
teleph
one
receiver
up-
side
down
and
place the hearing
aid
close to
the
receiver
and
speak
into
the
speaker.
Other-
wise,
everything
is
the same
as
when
using
an
ordina
ry micro-
phone. Conver
sat
ion c
an
also
be
readily
carried
on
by
placing
the
hearing
aid
behind
the
tele
-
phone
.
-7-
-8-
3.
Tone
Control
Th
ere
are two stages,
Hand
L, in th e to
ne
control. The desir-
ab
le to
ne
can
be
obtai
ned
by
turning
the
cont
rol
swi
tch with
o
ne
's
fIl1g
f'J"lip.
..-
--..
H.
.High
tone amplilier.
/
High
ton
es
are
clear.
I
\"\
L
.Low
tone
amplilier
.
v
Lo"
tones
are
clear.
4.
Changing
Batteries
Push
the butt
on on the t
op
back
side
oi the
hearing
aid.
Th
e
metal
back
co,'er
\\'jll comeoff. P
ull
tile
ribbon
and
the
dry
- 9
battery
comes ou t
eas
ily. B
efo
re
inserting
a n
ew
dry
battery,
polish bot h ends.
Make
sure which
end is
positive
and
which
end
is
the nega
tiv
e. Then insert the dry
bat
tery by placi
ng the
ribbon
unde
r it and maki
ng
sure
that
it is
secure
ly
connected.
Wh
en
closing
the
metal cover inse
rt
the instrudi
ng
part
on
th e
lo
wer
end of
the
cover into the
slot on
the hearing
aid
and
pus
h
th e cover shut. It will lock
with
a click.
5.
Molded
Earpiece
Th
e ea
rph
one provided with
this Hearing Aid
is
designed
so th
at
a
standard mold
ed
ear
piece will snap
on
readily. Most
metropolitan
ar
eas have
one
or
more co n
cerns
who
specia lize in molding
ear-
pieces to your ear.
Cons
u.lt your
cla
ssified
telephone
dir
ec tor y
or
local h
eari
ng
aid
cente r.
6.
Specifications
Tr
ansistors used:
2SB -47.....1 transistor
2SB-54
...
.. 3
transi
stors
-
10-
Receive
r
ImpedancE' :
Dry
Battery:
Dim e ns
ions
:
V\'ei
ght
:
~
80
Q
dOOO
C
IS)
UM-3A
or
UM-3 (1.5V) ... 1
battery
Hei
ght 2.9" XWidth 1.
9" X
Depth
0.7"
3
02S.
CIRCUIT
DIAGRAM
? ;,.;
'S A J
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