The reason that the isolation transformer can greatly increase any voltage spikes before they reach the secondary is because of the rise time of current through an inductor.

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Quizplus · Accepted Answer

An isolation transformer's primary function is to decouple two circuits, allowing AC power to flow while blocking transmission of DC signals and noise from one side to the other. It does not inherently increase voltage spikes; instead, it can provide protection against voltage spikes by isolating the secondary side from direct disturbances on the primary side. The rise time of current through an inductor is related to inductive reactance and does not directly explain the behavior of isolation transformers in increasing voltage spikes.

The Reason That the Isolation Transformer Can Greatly Increase Any