GFK-0356Q
Chapter 4 Power Supplies
4-9
4
Input Power/Current Calculation
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Determine total output load from typical specifications listed for individual modules in
Chapters 2 and 3.
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Use the graph to determine average input power.
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Divide the input power by the operating source voltage to determine the input current
requirements.
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Use the lowest input voltage to determine the maximum input current.
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Allow for start-up surge current requirements.
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Allow margins (
0% to 20%) for variations.