In this video, electrical engineer Barron Stone explains how inductors store and release energy from the magnetic field surrounding a coil of wires to oppose changes in current through the inductor. Learn about units of henries that are used to measure in
- [Instructor] An inductor is a reactive component…that opposes changes in current…by storing and releasing energy in a magnetic field.…Structurally, an inductor is just a piece…of wire wrapped into a coil.…And conveniently the schematic symbol for an inductor…looks like several loops of wire.…You may also see the modern version…of the inductor symbol,…which trades the loops for a series of humps.…The inductance between the wires and the coil,…cause the inductor to build up a strong magnetic field…as current flows through it.…
When the current through an inductor increases or decreases…it causes that magnetic field in the coils…to grow or shrink,…which stores or releases energy…to oppose that change in a current.…I like to think of the effect that an inductor has…on current to the effect that inertia has on a moving car.…When you push on the accelerator pedal in a stopped car,…it takes a few seconds for the car…to overcome the inertia of sitting still,…before it gets up to speed.…You can't instantly go from 0 to 60 miles per hour,…
- Reading electrical schematics
- Building circuits on breadboards
- Reviewing types of static and variable resistors
- Reading resistor color codes
- Measuring resistance with a DMM
- Measuring resistive sensors with an Arduino microcontroller
- Making electrical signal measurements with an oscilloscope
- Measuring AC voltage with a DMM
- Understanding the time domain and frequency domain
- Designing passive low-pass and high-pass filters
- Reviewing reactive RC and RL circuits
- The relationship between capacitors and inductors
Skill Level Beginner
Learning to use MakerBot 3D Printerswith Kacie Hultgren1h 5m Appropriate for all
Learning Arduino: Pulse Width Modulationwith Rae Hoyt1h 16m Intermediate
1. Building Circuits
Read electrical schematics6m 25s
3. Resistive Circuits
4. Oscilloscope Measurements
6. Alternating Current
7. Electrical Signals
8. Reactive Circuits
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