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Blk
+
-
Voltage
FollowerBlk
50
TTL
Function Generator
R
C
Yel
Blk
Or Ch0 Hi
BlkCh0 Lo
Ch1 Hi
Ch1 Lo
GREEN
WHITE
R+R+RR
R+R+RRRR--RR
RR--RR
++
--
--
++
RRiiRRii
RRff
RRff
RED
BLACK EEoutout
EEinin
++
--
--12V12V
+12V+12V
2
36
7
4
Load Cell
--12V12V
+12V+12V
Operational Amplifier (op-amp)Operational Amplifier (op-amp)
Positive powersupply (+12V)
Negative powersupply (-12V)
Inverting input
Non-inverting inputNon-invertinginput (V+)
Invertinginput (V-)
Negative power supply (-12V)
+
-741
4
1
2
3
5
6
7
8
Output
Output (Vo)
Positive power supply (+12V)
Electrical SchematicSymbol
Integrated Circuit8 Pin DIP (Dual In-line Package)
Single Input, Inverting ampSingle Input, Inverting amp
+
-
R1 R2
Eo
-
+-
+
Ei
E*-
+
i- +12V
-12V
i2i1
R3
Single Input, Inverting ampSingle Input, Inverting amp
i1
20 E
R
RE
+
-
R1 R2
Eo
-
+-
+
Ei+12V
-12VR3
213 R
1
R
1
R
1
Multiple input, summing amplifierMultiple input, summing amplifier
R2
-
- +
+
R1
+
-
-
+
R3
2
2
31
1
3O E
R
RE
R
RE
Eo
E1
E2
R4
3214 R
1
R
1
R
1
R
1
+12V
-12V
Single input, non-inverting amplifierSingle input, non-inverting amplifier
R1
+
-
-
+
R2
i1
2O E
R
R1E
EoEi
-
+
+12V
-12V
R3
213 R
1
R
1
R
1
Dual input, difference amplifierDual input, difference amplifier
11
22
1
212
1
2o E
R
RE
R
REE
R
RE
-
+
+
R2
-
-
+
-
+
EoE2
E1
R1 R2
R1
+12V
-12V
““Buffered” Potentiometer via Buffered” Potentiometer via Voltage DividerVoltage Divider
+12V
-
+
-
+
-
+
-12V
EOEi
+12V
-12V
Integrating ampIntegrating amp
+
-
R
Eo
-
+-
+
Ei
C
t
0 oi21
O (0)EdtECR
1E
+12V
-12V
ComparatorComparator
-
- +
+
+
-
-
+
refi
refi
OEEif12V
EEif12VE
Eo
Eref
Ei
+12V
-12V
Instrumentation AmpInstrumentation Amp
-
+ +
--
+-
+
RG
i3
1
2O E
21E
GR
R
R
R
R3
R2R1
R3 R2R1 EO
-
+
Ei
-
+
Ein
741-
+
+12V
-12V
2
3
6
7
4
4.237
COMVHz
COM
-12V
+12V
DMMFunction Generator
-
+
Eout
-
+
Ein
741-
+
+12V
-12V
2
3
6
7
4
741-
+
+12V
-12V
2
3
6
7
4
741-
+
+12V
-12V
2
3
6
7
4
741-
+
+12V
-12V
2
3
6
7
4