Elektor has announced the release of Introduction to Electronic Filters, a comprehensive and practice-oriented book by Dr. Peter Dalmaris. Designed for electronics beginners, students, and hobbyists, the new publication offers a clear and engaging path into the world of RC and RL filters—essential building blocks in modern electronics.

The 300-page book explains what filters are, how they work, and why they matter in real-world circuits. Readers learn the behaviour of low-pass, high-pass, band-pass, and band-stop filters through a combination of theory, practical experiments, and simulation. Each chapter builds on approachable examples, such as tone-shaping in audio circuits or cleaning up noisy sensor signals. The book introduces key concepts like cutoff frequency, reactance, frequency response, and phase shift, and shows how they shape signal behaviour in everyday electronics.

Introduction to filters extract

A standout feature is its use of Python and popular libraries such as NumPy and Matplotlib to help readers simulate circuits and visualise signal behaviour. Step-by-step scripts guide users through generating Bode plots, analyzing filter outputs, and exploring time-domain responses.

With clear explanations, practical learning activities, and downloadable code examples, Introduction to Electronic Filters provides an accessible yet thorough foundation for anyone looking to understand or design filters for audio, sensing, communication, or general electronics projects.

From the basics of frequency response and phase shift to hands-on breadboard builds and Python-based simulations, this book offers a deeply practical learning experience. You will learn to analyse filters using Bode plots and phasors, and explore applications in audio tone shaping, sensor signal conditioning, noise reduction, and power supply filtering.

As you progress, you’ll build, measure, simulate, and tune filters using modern tools like CircuitLab, Python, and the Analog Discovery 3. Each chapter includes thoughtfully crafted activities that reinforce learning by doing – designing filters for specific tasks, simulating dynamic behaviour, and observing how theory translates into performance.

Inside Introduction to Electronic Filters you’ll find:

  • A clear introduction to the fundamentals of electronic filters
  • Detailed explanations of RC and RL filters, cutoff frequency, and phase
  • Guided activities using both simulation and hardware tools
  • Real-life applications in audio, sensors, power supplies, and more
  • A beginner-friendly primer on Python and algebra for electronics


Whether you’re working through simulations or experimenting with real components on your workbench, this book will help you develop a solid understanding of electronic filters and their role in practical circuits.

The book is available through Elektor’s online store.

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