Farnell TOPS 3D - Page 19

R
C7
VT
MISC BRI BR2
24 2/4 wOZM
TO TX1
2/1
22 W02M
TO TX1
BR2
BR1
C7 470u
25V
16
J cOAbY
25V
13 1
R'
1C1
R13 S
10K S
MSD
VT
o0nw341P5
P3
VT2
325
R3
ZoIGITAL STAR GND.
CAL
VOLTS
11 2610 2 9 65685 24
AN
Vcc Vcc
DS1
VI3
P3 2K R259K1
C5
10u 25V
1C2
R11RO R9R8R24
4
R2R6RS
SR26
1M
1k S1k <<Ik<1k <15k<
4
28127| 261 25| 24 23 22 21 2019 1 1z 16 15
ef g GND DI D2 D3 D4 f f V
OUT
IN
pYSW1
SW2
AN
GND
1C2 ADD3701CCN
CONVSTART VIN VIN V
P& SW1
R56 680
VT4
PL 500O
CAL I +6VO
15 21 T7 7 55 16 22 18 14 19 23 12
TRACED SS I DATEMOD NoISsDATE MOD NoCCHDES N CIDC Es REPRESENT PIN NUMBER
A 55.81
CHECKED| B l27.72171IS
PUSH
BUTTONS
SHOWN
IN
OUT
POsITION.
R21
56
SW1
+6V
R19
100K
R7
ANALOGUE
|STAR GND.
ON THE CONTROL BOARD.
1/3
DESIGNATES
SOCKET1,
PIN 3
PIN Nos: EXAMPLE
MOUNTED ON CONTROL BOARD.
w
3 2
1/3
SR22
SR17
220 390K
20
RI6
VT1 to VT4= BC337
1k
100V
5
R1toR7=39
ZL C2
T22On
PE
s BC212PL
R55 2K2
P1 Z1,SW2,P2
>R18
> 22M
R19
220
R23
560
FULL
cCALEo2
SK3
P5 1K
CAL I-17V O
RI4 82k
WH
20
R20
hoOK
ZN
1
P2
1EOKSSET
R9
SW2
-17V
/5
ZERO
9
USED ON F1009 FROM SERIAL NO.131
54 28 41 27 2932
C9
IC3 P6
R29 R32
R41
10K
IC3
H1 23
R54 2K2
P6 1K
R28
LM341| P5
NOTE
SW
/14
TE
A R20*
CAL I+17v ol
62 1/7
6
VT6
SW:
+17V
7
VoIGITAL STAR GND.
/8
VT7
31
1/9
13
AN
lCAPACITOR VALUES GIVEN IN FARADS.
AESISTOR VALUES IN O
UNLESs OTHERWISE STATED
AMPS
VT8
R39
e f g GND D1 D2 D3 D4
39 38 30373436 33 52
DS2
1C4 ADD3701CCN
C13
SW
R38 652
1K S1K SIK SIK S15KS
10u 25V
+
EXTERNAL VOLTS
111 9/10
8 12
VT9
C8
|TITLE
10u
C12 100p
CONV START
b a OFLCOMP CONVPOLVfil(-) (-) fb
Vcc Vcc dc
1| 21 3 4| 5 6 7 8 9 10 11 12 13 14
5349 43 35 45 44 50 42464047 51
1404 15com dp 16
SW4
R49 56
L
OUT
IN
RESWISW2
AN
R35
RU5
S220
VINVIN V
R43
100K
ANALOGUE
R53
10k
CURRENT METER DAMPING
GND
1110
SRSO
10ov
1STAR GNDC10
10
R29 toR35=39
VT6 toVT9= BC337
390K S
()T10 BC212PL
>R46
>22M
SK4
P7 Z2 P8
R51
560
R47
l220
DISPLAY BOARD CIRCUIT DIAGRAM
109
SET•
FULL
sCALESR4O
S1K
P.
T 22Cn 100V R42 82 K
1/.
48
SHEE
R48
hoOK
DRAWING No.
Z2
FARNELL
INSTRUMENI
S LTD.
WETHERBY,
YORKS.
ZN
404
P8
2SZX0152
R
C
VT
D
MISC
1 OF SHEETS
dc b a OFLCOMPCONVPOLVHL(-) () fb