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Lesson 3
Add an inductor to the RC and energy can slosh back and forth: the poles leave the real axis and the edge rings. One number, the damping ratio ζ, decides how much. Commit to predictions first, then fire up the scope and see why.
Predict · 1 of 2 · overshoot
A 0 → 1 V, 5 kHz square wave from a 50 Ω generator drives R = 100 Ω, a 1 mH inductor and a 10 nF capacitor in series. CH2 is the capacitor. After the rising edge, by what percentage does V(C) overshoot 1 V on its first peak? Estimate it; that's the skill.
Result
Waiting on your call.
Make your mark, then lock it in. The answer, your error and the reason behind it land here, and the scope and every view below fire up.
Engine: in-browser MNA solver, one period in 3,912 timesteps from the exact steady state, fine only while the ring lives · max deviation from closed form 0.013% of full scale · cross-checked against SPICE on this lesson's circuits: its numbers show once you're in the lab (they'd give the answers away)