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Table
6-1.
Model
1779
Spare
Parts
Kit
Qty.
Keithley
Part
No.
Schematic
Number
Description
2
DD-30
DS202,
3,
4,5
7-Segment
Display
1
DD-31
DS201
'
±1
Display
5
FU-13
F101
Line
Fuse
,
2
FU-20
F102
Current Fuse
1
IC-93
VR101
H-5V
Regulator
1
IC-102*
U201
CMOS NAND
Gate
1C
1
IC-139*
U111
CMOS
Hex
Inverter 1C
1
iC-168*
U203
Segment
Driver 1C
1
IC-169
U202
Digit Driver IC
1
!C-197*
U110
CMOS
Binary
Con-
verter IC
1
IC-203
U107, 109
OP
Amp
IC
1
IC-205
U108
OP
Amp
IC
1
KN-41-1
Front Panel
Zero
Knob
1
LSM1
U106
Logic Processor
IC
1
LSM2
U105
Analog
Processor
IC
1
RL-56
K101
Relay
1
TF-80
R126
Thick
Film Resistor
1
TG-77
Q101,
102,
105
2N4392 JFET
1
TG-93
Q103
2N3439
Transistor
1
TG-94*
Q104
Dual
MOSFET
*Anti-Static Protection
&
Handling Required.
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