© National Instruments
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4-5
Output Signal Connection Example (Sourcing Current)
The following figures show examples of driving a load with the photocouplers and Darlington
arrays (sourcing current).
Figure 4-5.
NI 6512 Output Signal Connection Example
Figure 4-6.
NI 6514 Output Signal Connection Example
Volt
a
ge
Reg
u
l
a
tor
P<0..7>.COM (GND)
P<0..7>.<0..7>
+
–
DC
LOAD
+5 V ~ +
3
0 V
O
u
tp
u
t
Photoco
u
pler
+
3
.
3
V
P<0..7>.VCC
NI 6512
D
a
rlington
Driver
Volt
a
ge
Reg
u
l
a
tor
P<4..7>.COM (GND)
P<4..7>.<0..7>
+
–
DC
LOAD
+5 V ~ +
3
0 V
O
u
tp
u
t
Photoco
u
pler
+
3
.
3
V
P<4..7>.VCC
NI 6514
D
a
rlington
Driver
