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National Instruments Corp.
9
NI 9476 Operating Instructions and Specifications
Increasing Current Drive
Each channel has a contin
u
o
u
s o
u
tp
u
t c
u
rrent of 250 mA. If yo
u
want to increase the o
u
tp
u
t c
u
rrent to a device, yo
u
can connect
any n
u
mber of channels together in parallel. For example, if yo
u
want to drive 1 A of c
u
rrent, connect DO<0..3> in parallel as
shown in Fig
u
u
m
u
st t
u
rn all parallel channels on and off
sim
u
ltaneo
u
sly so that the c
u
rrent on any single channel cannot
exceed the 250 mA rating.
Figure 3.
Increasing the Current to a Device Connected to the NI 9476
NI 9476
250 mA
250 mA
250 mA
250 mA
DO3
DO1
DO0
DO2
1 A
+
_
Device
COM
External
Power
Supply
V
sup