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Q&A Understanding inductive ringing

For my own understanding I tried modelling switching off an inductive load without a freewheeling diode to observe ringing. This is the model I used: 1.) Are the two main components of the reson...

2 answers  ·  posted 6mo ago by Elleanor Lopez‭  ·  last activity 6mo ago by Olin Lathrop‭

Question inductance
#1: Initial revision by user avatar Elleanor Lopez‭ · 2024-05-08T07:42:13Z (6 months ago)
Understanding inductive ringing
For my own understanding I tried modelling switching off an inductive load without a freewheeling diode to observe ringing. This is the model I used:

![Image_alt_text](https://electrical.codidact.com/uploads/q4bpmc729zkwqd32rn7op3l59xx6)


1.) Are the two main components of the resonant circuit L1 and C_windings, where C_windings is the inherent capacitance between the two ends of L1, or are there more elements contributing to this effect that I have not placed in the circuit?

2.) Can ringing on digital signal lines also be represented in the same way, where L1 is the total inductance of the signal line and C_windings is the capacitance between the two ends of this signal line?

![Image_alt_text](https://electrical.codidact.com/uploads/qum25mfnqvbxd6m2r7fjlfb4o120)

3.)Is adding a termination resistor on data lines essentially providing a path for the collapsing magnetic field of the line inductance that dampens the LC oscillation? (Path in red)