HP Lab Series - Page 60

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REFERENCE
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CONSTANT
CURRENT
COMPARATOR
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R28
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CURRENT
SAMPLING
VOLTAGE
TO
MEHR
CIRCUIT
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Rl9
SELECTED
CC PROGRAM
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lcuRRENTI
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R,68
200
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65K
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R83
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125
450V
CIRCUIT
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REGULATOR
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R92
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PRE
REG.
TRACKING
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FROM
TURN-ON
CONTROL
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R!02
100
ft
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VOLTAGE[·
INPUT
--~
@J.
CURRENT[·
INPUT
• ,
-s
+FCFRONTl
s
6
A'lf
Prt~:~
VOL·TAGE
R55
42.2
I/SW
R38
30K
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R58
100
I/SW
-3v-....._
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----
---
--
-
--
--
--
----
--
--
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NOTES:
I
.ALL
RESISTORS
~RE
IN OHMS,
l/2W
!
5%
UNLESS
OTHERWISE NOTED.
2.ALL
I/SW
ANO
:,4W
RESISTORS
ARE
j:I%
IN
TOLERANCE.
3.ALL
CAPACITORS
ARE
IN MICROFARADS,
UNLESS
OTHERWISE NOTED.
4.1
DENOTES
NOM'NAL
VALUE.
COMPONENT
SELECTED
FOR
OPTIMUM
PERFORMANCE.
Ii.*
DEllOTES
20P?M
WIRE
TEMPERATURE
COEFFICIENT.
6.
REAR
TERMINALS
ARE
SHOWN IN
NORMAL
STRAPPING
FOR
USE
OF
FRONT
PANEL
CONTROLS.
7.
DoNOTES
VOLTAGE
FEEDBACK
SIGNAL.
S. DENOTES CURRENT
FEEDBACK
SIGNAL
9.
POTENTIOMETER R16A
a
B
IS
A
DUAL
SHAFT
FRONT
PANEL
CONTROL.
10.
TRANSFORMER
SHOWN
STRAPPED
FOR
115VAC
OPERATION,
SEE
INSTRUCTION
MANUAL
FOR
230
VAC
11.
DC
VOLTAGES
WERE
MEASURED
UNOER
THE
FOLLOWING CONDITIONS:
A.
SIMPSON
MODEL
269
OR
tOUIVALENT.
B.
115VAC
INPUT
. _
...
C.
VOLTAGES
REFERENCED
To
+s
UN~JSS
ClfHERWISE
NOTED.
D.
VOLTAGES
ARE
TYPICAL
!10%
aliLESS
OTHERWISE
NOTED.
E.ALL
READl~GS
TAKEN
IN
CONSTANT
VOLTAGE
OPERATION
AT
MAXIMUM
RATED
OUTPUT
WITH
NO
LOAD CONNECTED. CURRENT CONTROLS SHOULO
BE
TURNED
FULLY
CLOCKWISE.
12.=DENOTES
FRONT
PANEL
MARKING.
40V
--.'
-o.ot·v
014
METER
CIRCUIT--,
-6.2V
R75
3K
I/SW
VR6
4.22V
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_
_::.4v
__
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CIRCUIT
PATENTS
APPLIED
FOR.
LICENSE
TO
USE
MUST
BE
OBTAINED
IN
WRITING
FROM
HEWLETT·PACKARO
NEW
JERSEY
DIV.
I
Figure
7-2.
Schematic
Diagram,
s
-F
(FRONT)
Model
6209B