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WS7107

WS7107首页预览图
型号: WS7107
PDF文件:
  • WS7107 PDF文件
  • WS7107 PDF在线浏览
功能描述: 3 1/2 Digit LCD/LED Display A/D Converters
PDF文件大小: 323.16 Kbytes
PDF页数: 共14页
制造商: WINGS[Wing Shing Computer Components]
制造商LOGO: WINGS[Wing Shing Computer Components] LOGO
制造商网址: http://www.wingshing.com/en
捡单宝WS7107
PDF页面索引
120%
7107MEASUREINGRATIOMETRICVALUESOF
QUAD LOAD CELL
7106 USED AS A DIGITAL CENTIGRADE
THERMOMETER
FIGURE 19. CIRCUIT FOR DEVELOPING UNDERRANGE AND
OVERRANGE SIGNAL FROM
FIGURE 20. CIRCUIT FOR DEVELOPING UNDERRANGE AND
OVERRANGE SIGNALS FROM
Typical Applications
(Continued)
28
40
39
38
37
36
35
34
33
32
31
30
29
27
26
25
24
23
22
21
OSC 1
OSC 2
OSC 3
TEST
REF HI
REF LO
C
REF
C
REF
COMMON
IN HI
IN LO
A-Z
BUFF
INT
V -
G2
C3
A3
G3
GND
100pF
TO PIN 1
0.1µF
100k
0.47µF
TO DISPLAY
The resistor values within the bridge are determined by the desired
sensitivity.
V+
0.22µF
47k
28
40
39
38
37
36
35
34
33
32
31
30
29
27
26
25
24
23
22
21
OSC 1
OSC 2
OSC 3
TEST
REF HI
REF LO
C
REF
C
REF
COMMON
IN HI
IN LO
A-Z
BUFF
INT
V -
G2
C3
A3
G3
BP
100pF
TO PIN 1
0.1µF
0.01µF
100k
100k 1M
9V
47k
0.22µF
0.47µF
TO BACKPLANE
TO DISPLAY
A silicon diode-connected transistor has a temperature coefficient of
about -2mV/
o
C. Calibration is achieved by placing the sensing
transistor in ice water and adjusting the zeroing potentiometer for a
000.0 reading. The sensor should then be placed in boiling water
and the scale-factor potentiometer adjusted for a 100.0 reading.
SCALE
FACTOR
ADJUST
100k 220k
22k
SILICON NPN
MPS 3704 OR
SIMILAR
ZERO
ADJUST
13
1
2
3
4
5
6
7
8
9
10
11
12
14
15
16
17
18
19
20
V+
D1
C1
B1
A1
F1
G1
E1
D2
C2
B2
A2
F2
E2
D3
B3
F3
E3
AB4
POL
28
40
39
38
37
36
35
34
33
32
31
30
29
27
26
25
24
23
22
21
OSC 1
OSC 2
OSC 3
TEST
REF HI
REF LO
C
REF
C
REF
COMMON
IN HI
IN LO
A-Z
BUFF
INT
V-
G2
C3
A3
G3
BP
O /RANGE
U /RANGE
CD4023 OR
74C10
CD4077
TO LOGIC
V
CC
V+
TO
LOGIC
V-
GND
O /RANGE
U /RANGE
CD4023 OR
74C10
TO LOGIC
V
CC
+5V
V-
33k
The LM339 is required to
ensure logic compatibility
with heavy display loading.
13
1
2
3
4
5
6
7
8
9
10
11
12
14
15
16
17
18
19
20
V+
D1
C1
B1
A1
F1
G1
E1
D2
C2
B2
A2
F2
E2
D3
B3
F3
E3
AB4
POL
28
40
39
38
37
36
35
34
33
32
31
30
29
27
26
25
24
23
22
21
OSC 1
OSC 2
OSC 3
TEST
REF HI
REF LO
C
REF
C
REF
COMMON
IN HI
IN LO
A-Z
BUFF
INT
V-
G2
C3
A3
G3
BP
12k
+
-
+
-
+
-
+
-
WS7106 / WS7107
FIGURE 18. WS
FIGURE 17. WS
12
WS7106 OUTPUTS
WS7107 OUTPUT
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