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Which outcome occurs when parasitic capacitance arises within SMPS transformers?

A)Increased switching losses and EMI emissions
B)Enhanced transformer core saturation margin
C)Improved transient voltage suppression capability
D)Reduced leakage inductance characteristics noticeably

💡 Explanation

Increased switching losses and EMI occur because parasitic capacitance forms unintended resonant circuits causing unwanted current oscillations (ringing); therefore, losses rise and EMI increases, rather than enhancing saturation margin which is affected by core material selection.

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