© National Instruments Corp. 9 NI 9475 Operating Instructions and Specifications
Increasing Current Drive
Each channel has a continuous output current of 1A. If you want
to increase the output current to a device, you can connect any
number of channels together in parallel. For example, if you want
to drive 4 A of current, connect DO<0..3> in parallel as shown
inFigure 3. You must turn all parallel channels on and off
simultaneously so that the current on any single channel cannot
exceed the 1A rating.
Figure 3. Increasing the Current to a Device Connected to the NI 9475
NI 9475
DO3
DO1
DO0
DO2
4 A
+
_
COM
1 A
1 A
1 A
1 A
External
Power
Supply
Device
V
sup