Hewlett-Packard 450A Operating And Servicing Manual
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Model 450A
Section V
Circuit
Description
Mfr.
*
<Fp
TQ
RS
Ref.
Stock No.
R17
Same
as
R1
R18
Resistor:
fixed,
composition,
01121 0693-1031
2
1
10,000
ohms
±10%, 2 W
R19
Resistor:
fixed,
composition,
01121
0690-5631
1 1
56,000
ohms
±10%, 1 W
R20
Not
assigned
R21
Resistor:
fixed, wirewound,
35434 0816-0003 1 1
500
ohms
±10%,
10
W
R22
Resistor:
fixed,
composition,
01121 0690-5641 1 1
560,000
ohms
±
10%,
1 W
R23
Same
as
R18
R24
Resistor:
fixed,
composition,
01121 0690-3331 1 1
33,000
ohms
±10%, 1 W
R25
Resistor:
Optimum
value
selected
at
factory.
R26
Resistor:
fixed,
composition,
01121 0690-8231 1 1
82,000
ohms
±10%, 1 W
R27
Resistor:
variable,
wirewound,
28480
M-77
1 1
)
linear
taper,
10
ohms
R28
Resistor:
fixed,
composition,
01121 0687-6811 1 1
680
ohms
±10%,
1/2
W
R29
Resistor:
fixed,
composition,
01121
0690-1511
1
1
150
ohms
±10%, 1 W
Sl,2
Switch,
toggle
04009 3101-0001
2
1
T1
Transformer,
power
28480 9100-0016 1
1
.
V1, 2, 3
Tube,
electron:
5654 86684 1923-0001 3
3
V4
Tube,
electron:
5Y3GT 86684 1930-0010 1 1
V5
Tube,
electron:
6AU5GT 33173
1923-0020 1
1
V6
Tube,
electron:
6AV6
82219 1939-0001
1 1
V7
Tube,
electron:
OA2
97966 1940-0004 1 1
)
*
Refer
to
II
List
of
Manufacturers"
TQ
Total
Quantity
used
in
the
instrument.
RS
Recommended
spares
for
one
year
isolated
service
for
one
instrument.
Figure
5-1.
Replaceable
Parts
(Sheet 3 of 4)
00001-1
5-3