Electrical Engineering › Section H · Magnetic circuits and inductors › Topic H.5
Self-inductance, inductor types, and induced voltage
A coil reacts to changes in its own current by inducing a voltage that resists them. That property, inductance, makes the inductor the third basic circuit element, with behaviour that mirrors the capacitor's.
In this topic
- A coil that fights its own changes
- Defining inductance
- Inductance from the coil's shape
- Worked example: a ferrite toroid
- Real inductors
- Types, values and testing
- The induced voltage: v = L di/dt
- Ramps: the average voltage
- Worked example: a current waveform
- Switching off a coil safely
- Common mistakes to avoid
- Key takeaways
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