First, I wish to thank my wife, whose patience during those many and long evenings (and weekends!) of typing has been extraordinary.

I also wish to thank those whose open-source software development efforts have made this endeavor all the more affordable and pleasurable. The following is a list of various free computer software used to make this book, and the respective programmers:

  • GNU/Linux Operating System -- Linus Torvalds, Richard Stallman, and a host of others too numerous to mention.
  • Vim text editor -- Bram Moolenaar and others.
  • Xcircuit drafting program -- Tim Edwards.
  • SPICE circuit simulation program -- too many contributors to mention.
  • Nutmeg post-processor program for SPICE -- Wayne Christopher.
  • TEX text processing system -- Donald Knuth and others.
  • Texinfo document formatting system -- Free Software Foundation.
  • LATEX document formatting system -- Leslie Lamport and others.
  • Gimp image manipulation program -- too many contributors to mention.

Appreciation is also extended to Robert L. Boylestad, whose first edition of Introductory Circuit Analysis taught me more about electric circuits than any other book. Other important texts in my electronics studies include the 1939 edition of The “Radio” Handbook, Bernard Grob's second edition of Introduction to Electronics I, and Forrest Mims' original Engineer's Notebook.

Thanks to the staff of the Bellingham Antique Radio Museum, who were generous enough to let me terrorize their establishment with my camera and flash unit. Similar thanks to the Fluke Corporation in Everett, Washington, who not only let me photograph several pieces of equipment in their primary standards laboratory, but proved their excellent hosting skills to a large group of students and technical professionals one evening in November of 2001.

I wish to specifically thank Jeffrey Elkner and all those at Yorktown High School for being willing to host my book as part of their Open Book Project, and to make the first effort in contributing to its form and content. Thanks also to David Sweet (website: [*]) and Ben Crowell (website: [*]) for providing encouragement, constructive criticism, and a wider audience for the online version of this book.

Thanks to Michael Stutz for drafting his Design Science License, to Richard Stallman for pioneering the concept of copyleft, and to Creative Commons for the CC BY License.

Last but certainly not least, many thanks to my parents and those teachers of mine who saw in me a desire to learn about electricity, and who kindled that flame into a passion for discovery and intellectual adventure. I honor you by helping others as you have helped me.

Tony Kuphaldt, January 2002

"A candle loses nothing of its light when lighting another"

Kahlil Gibran

Lessons In Electric Circuits copyright (C) 2000-2020 Tony R. Kuphaldt, under the terms and conditions of the CC BY License.

See the Design Science License (Appendix 3) for details regarding copying and distribution.

Revised November 06, 2021

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