ELECTRONICS guide series

Introduction to Electronics Inductors, quick introduction

This guide will help you understand electronic circuits—the fundamental building blocks of modern technology. Electronics are all around us, embedded in countless devices we use daily, and it all starts with these circuits.

Inductors, quick introduction

An inductor, also known as a coil, is a passive electrical component that stores electrical energy in the form of a magnetic field. Unlike capacitors, which store energy electrically, inductors store energy magnetically. Inductors are commonly used in circuits for various purposes, such as in switching regulators and for filtering.

Inductor Key Facts:

  • An inductor is a coil of wire that creates a magnetic field when current flows through it.
  • The impedance of an inductor varies with frequency, acting as a closed switch to DC signals and an open switch to high-frequency oscillating signals. You probably have not heard of the term "impedance" before. For now, just think of impedance as a measure of opposition that a circuit presents to the flow of alternating current (AC). It is similar to resistance in a direct current (DC) circuit but also accounts for the more complex effects of capacitance and inductance in an AC circuit.
  • Inductors are less common than resistors and capacitors but are essential components in many electronic circuits.
  • Inductors are used for energy storage, filtering, and inductive coupling in various electronic devices.
  • The symbol for an inductor consists of a coil-shaped element.

    • INTRODUCTION TO ELECTRONICS

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    Inductor Key Facts:

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    1. What is this course about?
    2. Hardware
    3. Software
    4. Course organisation and study guide
    5. What are electronic circuits?
    6. What is electricity?
    7. Key principles in electronics
    8. Direct Current (DC) and Alternating Current (AC) circuits
    9. Analog and Digital Electronics
    10. Introduction to electronic components and tools
    11. Resistors, quick introduction
    12. Capacitors, quick introduction
    13. Inductors, quick introduction
    14. Diodes, quick introduction
    15. Transistors, quick introduction
    16. Integrated circuits, quick introduction
    17. Circuit boards, quick introduction
    18. Breadboards, quick introduction
    19. Ohm's Law, quick introduction
    20. Basic tools in electronics
    21. Circuit simulators

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