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PCB Currents: How They Flow, How They React by Douglas Brooks

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7. Reactive Circuits: Resonance

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7.1. Series Resonance

Some interesting things can happen when we combine capacitive reactance and inductive reactance in a circuit. Series reactances (Figure 7-1) add the same way resistors do. So if we have a capacitive reactance, Xc, and an inductive reactance, XL, they combine to form a total reactance, XTotal, as follows:

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Figure 7-1 A capacitor and an inductor in series.

Recall from Chapters 5 and 6 that

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