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Heathkit IB-5281 - Page 15

Heathkit IB-5281
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Page
13
Morte
ATELEIT®
i
—————___
eee
TARTS
In
the
following
steps,
install
each
transistor
as
follows:
1.
Refer
to
the
illustration
below
and
identify
the
E,
B
and
C
ang
1acniy
E,
Bo,
ana
wu
leads
of
the
transistor.
2.
Insert
the
transistor
leads
into
the
corresponding
E, B,
and
C
holes
in
the
circu
it
hoard
noics
in
the
circult
ocard.
3.
Position
the
transistor
1/4”
above
the
circuit
board.
Ta,
the,
hoard
a.
Turn
the
circuit
board
over,
solder
the
leads
to
the
foil,
and
cut
off
the
excess
lead
lengths.
é)
Q5:
2N4121
transistor
(#417-
235).
NOTE:
See
the
drawing
in
ar
ioe
gl
a
2
>
wf
A
eS
SS
ASS
SS
SS
Ta
|
HH
the
top
left
column.
ae
MPSA20
transistor
(#417-
01).
NOTE:
See
the
drawing
in
t;
;
(_--Q3:
2N4121
transistor
(#417-
of
)
|
-
235).
NOTE:
See
the
drawing
in
(le
ve
the
top
left
column.
4
a
sh
i
cq
A
il
=
=o
A
(Ly
ENSas8
transistor
(#417-291)
at
Q2.
|
FLAT
|
|
(Lx
Q7:
2N4121
transistor
(#417-
235).
[
swoxnawr
When
you
install
the
E
“|
|
C,
and
B
leads
of
the
following
transis-
|
tors,
notice
that
the
lead
configuration
between
the
above
type
of
transistor
and
this
type
are
different.
Also
note
that
the
center
lead
is
bent
BACK
in-
stead
of
forward,
as
in
the
previous
|
291),
|
|
/
Nn
(,4°Q1:
2N5458
transistor
(#417-
(1s
Q8:
2N3416
transistor
(#417-94)}.
V/
(4%
Q6:
2N3416
transistor
(#417-94).
PICTORIAL
1-4