Example one – National Instruments NI 9478 User Manual
Page 16
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NI 9478 Operating Instructions and Specifications
16
ni.com
Example One
You are driving a load with 2.0 meters of cable through a cycle in
which the NI 9478 is on and passing 1.25 A of current for 40
μ
s,
then off for 10
μ
s. The output period is 50
μ
s (40
μ
s + 10
μ
s) so the
output frequency is 20 kHz. The channel uses 14.8% of the total
power budget, as shown in the following equation.
4% 1.25
2
(
)
0.12% 2.0 0.2
–
(
) 1.25
2
(
) 0.04% 1.25 1
+
(
)
+
[
]20
+
14.8%
=
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