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Series-Parallel Circuit Topologies of Matched Single-Coil Pickups

  • Donald L. Baker
Chapter
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Abstract

This chapter constructs all-humbucking circuits by replacing single-unmatched coil pickups in series-parallel circuit topologies with series and parallel humbucking pairs of matched single-coil pickups. The chapter uses Maple V symbolic math package to solve circuit equations and shows that pickup circuits with passive loads and circuits with no loads have different tonal characters and numbers and basic topologies of (4), (6), (8), and up have multiple humbucking configurations based upon equal numbers of 0s and 1s in binary numbers of 4, 6, and 8 digits, and up. It compiles the numbers of possible circuits with potentially unique tones for K number of pickups in pairs, quads, and hextets, with estimates for octets.

Keywords

Single-coil Humbucker Series-parallel Circuit Topology Matched coils Potentially unique tones Pairs Quads Hextets Octets Loaded tones No-load tones Circuit equation Basic topology Lumped impedance Relative amplitude or intensity Terminal reversal 

References

  1. Baker, D. L. (2016b). Acoustic-electric stringed instrument with improved body, electric pickup placement, pickup switching and electronic circuit, US Patent 9,401,134, 26 July 2016. Retrieved from https://patents.google.com/patent/US9401134B2/
  2. Baker, D. L. (2017a). Humbucking switching arrangements and methods for stringed instrument pickups, US Patent Application 15/616,396, filed 7 June 2017, published as US-2018-0357993-A1, 13 Dec 2018, granted as Patent US10,217,450, 26 Feb 2019. Retrieved from https://www.researchgate.net/publication/335727402_Humbucking_switching_arrangements_and_methods_for_stringed_instrument_pickups_-_NPPA_15616396
  3. Baker, D. L. (2018b). Means and methods for switching odd and even numbers of matched pickups to produce all humbucking tones, US Patent Application 16/139,027, 22 Sep 2018, published as US-2019-0057678-A1, Feb 21, 2019, granted as U.S. Patent 10,380,986, 08/13/2019. Retrieved from https://www.researchgate.net/publication/335728060_NPPA-16-139027-odd-even-HB-pu-ckts-2018-06-22
  4. Baker, D. L. (2018c). Means and methods for obtaining humbucking tones with variable gains, US Patent Application 16/156,509, 10 Oct 2018, published as US-2019-0057679-A1, 21 Feb 2019, Pending. Retrieved from https://www.researchgate.net/publication/333520942_Means_and_methods_for_obtaining_humbucking_tones_with_variable_gains_Non-Provisional_Patent_Application_16156509_of_Donald_L_Baker_Tulsa_OK
  5. Fender, C. L. (1966). Electric guitar incorporating improved electromagnetic pickup assembly, and improved circuit means, US Patent 3,290,424, 6 Dec 1966. Retrieved from https://patents.google.com/patent/US3290424A/

Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  • Donald L. Baker
    • 1
  1. 1.TulsaUSA

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