HP 6296A - Page 8

~age
5 -
HP
P/N
06296-9000·i
changes - continued
~
Note:
Due
to
the
circuit
changes
shown.on
the next figure,
it
is
no
longer necessary
I
~
change
any
jumper
connections
at
T801.
dual primary windings of
T801
are per-
ently wired
in
parallel
across winding
3-4
of
T800.
The
pilot
light,
in
series
with
R903,
is
also connected across
th1
s winding.
AS-
·~{
AC
~·
..--;
____
N
CHANGE
16
In
the parts
list
and
on
~he
schematic,
change
R307
to
10
k,
10S,
HP
P/N
2100-3210.
CHANGE
17
~the
parts
list
and
on
the schematic,
add
capacitor
C901,
0.1
uF,
250
V.
HP
P/N
016Q-~0.65
as
shown
below:
N:.c----------
C901
F1
·~~~-----------
CHANGE
18
In the parts
list
and
on
the schematic,
add
resistor·
R904,
10
ohm,
5S,
1/2
W,
HP
P/N
0686-1005
in
series
with the negative lead
of
capacitor
C801.
CHANGE
19
~
the replaceable
parts
list
and
on
the
~atic,
indicate
that
12
k
is
the
nominal
value for
R712.
1be
value for
R712
is
fac-
tory s.elected
to
optimize the range of
ramp
adjust pot
R711.
·CHANGE
19
(Cont)
lhe procedure
for
selecting
R712
is
identi-
cal to
the
one
given
for
50
Hz
operation
in
paragraph
5-55,
steps
g through
j,
except
that
the
resistance
value should
be
selected
to
·provide
a
3
V
+/-.2
V
drop across the
·series
regulator.
(For
50
Hz
operation, the
voltage
drop
across the
series
regulator
remains
3.5
V)
Center
R711
before using the
resistance
box
to
determine the value for
R712
•.
5
Also
change
VR600
to
9
V,
HP
P/N
1902-0785,
change
R606
to
9
k,
HP
P/N
698-5454,
and
change
R611
to
490
ohm,
3
W,
HP
P/N
0811-1801.
CIRCUIT
PATENTS
APPLIED
FOR
LICENSE
TO
USE
MUST
BE
OBTAINED
IN
WRITING
FROM
HEWLETT-PACKARD
CO.
HARRISON
DIVISION.
NOTES:
1.
All
resistors
are
in
ohms,
1/2W,
+5$
uness
otherwise
noted.
2.
All capacitors
are
in
microfarads
unless otherwise noted.
CHANGE
20
In the parts.
list
and
on
the schematic for
the overvoltage
protection
crowbar, delete
R1
and
VR1;
add
U1
voltage regulator,
HP
P/N
1826-0276
and
C2,
fxd
elect,
1
uF,
50
V,
HP
PlN
0180-0230;
and
change
R9
to
1.5
k,
HP
P/N
0757-0427
and
R10
to
1.5
k,
5$,
HP
P/N
0811-1805
as
shown
in
the schematic.below:
""'"'
s
+l~.411
~
CZ
•