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Which outcome occurs when rapid switching saturates Mn-Zn ferrite toroid cores?

A)Barkhausen noise degrades signal integrity
B)Eddy currents minimize hysteresis losses
C)Core permeability increases dramatically
D)Self-resonance enables higher frequencies

💡 Explanation

Barkhausen noise increases because domain wall motion becomes discontinuous at saturation, inducing erratic voltage jumps. Therefore, signal integrity degrades—rather than improving through permeability changes—because the discontinuous jumps generate noise overwhelming the intended signal.

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