Keithley 617 - Page 156

Table 8-3. Electrometer Board, Parts List (Cant).
Circuit
D&g. Description
A341 1 Resistor. 402R. 1%. 1 18W. Composition
R342
R344
R345
R346
R347
R348
R349
R350
R351
R352
R353
R354
T301
u301
U302
u303
u304
u305
U306
u307
U308
u309
Resistor; 40.2h. 1 i, 1/8i. Composition
Resistor, 715Q, 1 %, 1/8W, Composition
Resistor, 2430, 1%, ll8W. Composition
Resistor, 270R, 5%. ‘/W, Composition
Resistor, 560R, 5%. XW, Composition
Potentiometer, lOk!l
Resistor, 5.6kR. 5%. XW, Composition
Resistor, 150kQ, 5%. XW, Composition
Resistor, 16.5kR. 1%. 1/8W, Composition
Resistor, 24.9ks2, l%, ll8W. Composition
Resistor, 1OOkSl 5%. %W, Composition
Resistor, 5.lkQ, 5%. SW, Composition
Transformer, Power
IC, 8-Stage Shift Register, MC14094BCP
IC, Hex Inverter, 74HC04
IC, Hex inverter, 74HC04
IC, Operational Amplifier, 741
Not Used
IC, Regulator, +5V. 7805
IC, Adjustable Regulator, LM337L
IC, Voltage Regulator +5V, 78L05A
IC, Low Noise Op Amp
VR301 Regulator, selected with R213
VR302 Regulator, Zener Diode, 9.1V. 1W. lN4739A
VR303 Regulator, Zener Diode, 9.1V. 1W. lN4730A
VR304 Regulator, Zener Diode, 33V. lW, lN4752A
W303 Jumper
J-
A5
Fl RP-104-10k
83 E2 R-76-5.6k
Ez
D2 R-767150k
85 G3
C5 G3
R-76-100k
R-76-5.lk
F3
82 TR-203
Dl 52 IC-251
jev E2 IC-354
;fN
E2 IC-354
c3 G2 IC-42
G4 c3 IC-93
G4 83 IC-345
G5 83 IC-223
c5 F3 IC-394
D3 F2 617-601
G4 C2 DZ-56
G4
C2 DZ-56
c3 E2 DZ-68
85 / CS-476
‘T301 and TlOl are supplied as a matched set. Order TR239 for 105-125. 210.250V operation, TR240 for 90-llOV, 180.220V
operation.
9-9