NI 6509 User Guide and Specifications
18
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Figure 14.
NI USB-6509 Sourcing Connection Example, <24 mA
Driving a Relay >24 mA
Figures 15 and 16 are examples of connecting the NI USB-6509 to a relay
that requires more than 24 mA of current. These examples use an additional
transistor circuit.
Figure 15.
NI USB-6509 Sinking Connection Example, >24 mA
Figure 16.
NI USB-6509 Sourcing Connection Example, >24 mA
GND
NI U
S
B-6509
P
X
.
Y
GND
NI U
S
B-6509
Vcc
P
X
.
Y
GND
NI U
S
B-6509
Vcc
P
X
.
Y
