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An extremely simple example of how transformers can be used in different ways.
The circuits are identical, with the exception of the transformers coupling coefficient. A high coefficient is typical ideal for power *transmission*. But it is almost never ideal for energy storage.
By relaxing the degree to which the two sides of the transformer are linked, we may use the transformer in a way closer to an inductor, and flux may be accumulated, without necessarily drawing energy from the secondary side.
Likewise, as seen in the two circuits, we may now utilize the filtering and resonate properties of an inductor, to create a considerably different impulse and frequency response.
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