Granville-Phillips 270001 004, Instruction Manual

Page: 32 / 35

FILAMENT RELAY
OFF
--
-12v-
AUTORA
N
GE SWITCH
1ELEC-' o-....__ 12 ON
ITROMETE';i>- - - -·. 13 �
'----._
S3-A
I
O
N
'.___
'
v
·12VDC
OFF
TO ELECTROMETER - -- ... :
S3·B
RA5·6
8�·12VDC
19K
DOWN RA
N
GE COMPARATOR
t 6VDC
CA37
CR38
2K
. - -
C16
--
�
\µFD
i
� 2.4K
1/2
1C7·B
5558
'-----------:/• >--�
R
'\,
A
/\
6
/\
·,.2 __ -'f S .,_
3.74K 1%
+6V
RA6-4
.'----"1'-"rl>----'\Nv---{6'
10K 1%
5 lOK
UP RA
N
GE COMPARATOR
DIGIT Al DECODER TRUTH TABLE
ICS
IC2 IC3
DECADE
<fl> 10
10
PI
N
PI
N
.PIN PIN PIN PIN
3
10 I 11
3 4 10
10•4
0 0 0 1 o I o 1
1
1
--
,
n-5
0 0 1 0 1
I
1 1 0 1
1n·6
0 1 0
1
,
1 0 1 0
10·7 0
,
1 0 1
i
1 0 1 1
10·8
1
0
0
1 1
I 0 1
1 1
C
PI
N
11
1
0
0
0
1
RA55
+12
6
r:93
�·7
+12
J
,\pFD
I
.,, "" 1E);t,
.J_
3
1
UP/DOWN
CR22
8
1
i6�-
C7J'iRviN
IC2-B
4
5
G
-r12
I
16
RA6-S
22K
A40 1M
14 11 6
ICS
14516
UP/DOW
N
COUNTER
RESET
+12voc _l
C18 0.1µFD
1
R42 2M
:Efr _'
c,""°'
� L OVDC
R41 2M
1-3·
4 SEC
r
C 17 0.1pFD
CLOCK
U/D COUNTER TRUTH TABCE
*
IC4
------i
PI
N
i PIN
3 I 4 �ii
N 1 � 1 r
0 I 1 1 I
o I 1 1
I 0
1 I 1 1 I o
o
!
o
T 1
,. 1
j _2__1_�-r._:
ELECTROMETER
OUTPUT
GREATER THAN ·.19VDC
LESS THAN ·.19VDC I
A
N
D
GREATER THAN ·2.34 voe
LESS THA
N
·2.34VDC: 1
ACTION
COUNT DOWN
I '
STE ADY ST ATE
COUNT !JP
12
�,11----"" TO ELECTROMETER
13�-
+12
14
:s3�
TO ELECTROMETER
7
+ 6
EcECTROMETER
·8
,,10
,v
RA3·3
'-2,.L--j---.--{�s\-..... i,f-➔
�''T�
'------al:J
15K
TO
ELECTROMETER
NOTES·
1.ALL RESISTORS ARE I
N
OHMS ,.SW, ±5%
U
N
LESS OTHERWISE SPECIFIED
2.RESISTOR
ARRAYS (RA TYPES) ARE 1/BW
3.
+
DE
N
OTES SIGNAL GROU
N
D
4.ALL QUAD NANO GATES ARE 14011 TYPE
5. // DENOTES TEST POINT
240
'----',TO
Ei.ECTROMETER
ELECTROMETER
AA3·5
'-..:::>"
---
...----<s1_0;-�
OS
'---�TO
ELECTROMETER
LED6
·4
4
" 10
LED4
FIG. 5-6
AUTORANGING SCHEMATIC