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Which effect occurs when a ferromagnetic core saturates within an inductor used in a SMPS?

A)Increased switching frequency instability
B)Reduced magnetic flux density
C)Overshoot voltage induced oscillations
D)Diminished capacitive reactance value

💡 Explanation

Instability occurs during saturation because the core's magnetic permeability decreases, reducing inductance, triggering switching frequency jitter. Therefore, the switching frequency becomes less stable, rather than a reduction in flux because operating inductance has now shifted.

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