Keithley 237

U41
IC,DUAL 4
BIT
DECADE
COUNTER,74HC390
IC-500
U42,U44
IC,8
STAGE
SHIFr/STORE
REGISTER,4094
IC251
U43,U52
IC,TRII‘LE
2
CH
MULTI/DEMUX,4053
IC283
U45
IC,8
BIT
IDENTITY COMP,74HC688
1C488
U48
IC,LOW POWER
OFFSET
VOLT
QUAD COMP,339
IC-219
U49,U55
IC,DUAL
D-TYPE
FLIP
FLOP,74HC74
IC337
U50
IC,LOW
NOISE
OPAMP,5534
IC-540
U51,U57,U59
IC,HEX
INVERTER,74HC04
IC-354
UM
IC,QUAD 2
INPUT
NAND,74HC00
IC-351
U56
IC,DUAL
LOW
NOISE
OPAMP,NE5532
IC5O1
VR1
IC,+5V
REGULATOR,3A,LM323
IC-240
VR2
IC,+5V VOLTAGE
REGULATOR,7805
324692
VR3
IC,POS
VOLTAGE
REG
+15V,500mA,78M15
324695
VR4
IC,NEG
VOLTAGE
REG 45V,500mA,79M15
324696
VR5
IC,VOLTAGE
REGULATOR,LM317MP
IC-308
VR6
IC,VOLTAGE
REGULATOR,LM337MP
IC3O9
VR7,VR8
DIODE,ZENER,15V,1N4744A
DZ75
VR9
DIODE,ZENER,68V,1N4760A
DZ83
W4
JUMPER
J45
Y1
OSCILLATOR,
8MHZ
CR254
Y2
CRYSTAL,7.68MHZ
CR29