April 2011
Intermediate to advanced
400 pages
16h 50m
English
Content preview from Power Sources and Supplies: World Class Designs
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www.newnespress.com
Chapter 3
3.2 The DC Level and the “ Swing ” of the Inductor
Current Waveform
From V L dI/dt we get I V t / L . So the “ swinging ” component of the inductor
current “ I ” is completely determined by the applied voltseconds and the inductance.
Voltseconds is the applied voltage multiplied by the time that it is applied for. To calculate
it, we can either use V
ON
times t
ON
(where t
ON
D / f ), or V
OFF
times t
OFF
(where
t
OFF
(1 D )/ f ), and we will get the same result (for that is how D gets defi ned in the
fi rst place!). But note also that if we apply 10 V across a given ...
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