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Figure 2. Increasing the Current to a Device Connected to the NI-9477
NI 9477
DO3
DO1
DO0
DO2
4 A
+
_
COM
1 A
1 A
1 A
1 A
External
Power
Supply
Device
Protecting the Digital Outputs from Flyback Voltages
If the channel is switching an inductive or energy-storing device such as a solenoid,
motor, or relay, and the device does not have flyback protection, install an external
flyback diode.
Figure 3. Connecting a Flyback Diode
Inductive
Device
+
–
NI 9477
COM
DO
External
Power
Supply
Flyback
Diode
Where to Go Next
NI Services
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78759-3504, USA.
ni.com
10
NI-9477 Getting Started
© 2022 National Instruments Corporation.
Содержание NI-9477
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