Overshoot in electronics

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Main Question or Discussion Point

Why does overshoot happen. For example in electronics, a square wave oscillating between 0-5V, overshoots 5V by a small margin.
When the power supply can only supply a max of 5V, how can the signal overshoot. I guess the same goes for ground (signal going below zero).
 

Answers and Replies

rcgldr
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Inductance in the circuitry causes this, electrons have some momentum and it requires special circuitry to counter this. I don't think it's possible to make perfectly square waves, but near square waves with rounded corners and no overshoot are possible.
 

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