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The Tonal Advantages of Pickups with Reversible Magnets

  • Donald L. Baker
Chapter
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Abstract

The first sections develop humbucking circuits for K = 2, 3, 4, and 5 matched, single-coil pickups and show that they can produce 1, 3, 19, and 365 humbucking no-load tone circuits, respectively, per pole configuration. When pickup poles can be reversed, they can produce 2K−1 = 2, 4, 8, and 16 tonally different pole configurations. When pole configurations are included in the calculations, this produces 2, 12, 52, and 2720 different tone circuits. When smaller circuits of J ≤ K are accounted, this offers 2, 18, 112, and 3120 different tone circuits, all humbucking. The next sections cover embodiments for reversible-magnet pickups, including vertical and horizontal coils. Figures show simulated fields for various pole configurations in horizontal pickups and suggest ways to optimize the field across the strings.

Keywords

Nunan Baker Prior art Humbucking Tone circuit No-load Output relation Humbucking relation Humbucking expression Phase combination Pole configuration In-phase Contra-phase Inverted duplicates Duplicate tone circuits String signal phase Output selections Magnet reversal Pole reversal Reversible magnets Humbucking pairs Humbucking triples Humbucking quads Humbucking quints Humbucking hextets Basic topologies Computer program Vertical coil pickup Horizontal coil pickup Pole indicator Alnico Rare earth Ceramic Horizontal coil pickup Magnetic field simulation Composite magnet Focusing magnet Magnetic field gradation Property gradation Spindle magnet Iron Magnet taper profile Magnet core Iron plate Signal pins Shorting pins Shorting contacts 

References

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  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. (2017b). Single-coil pickup with reversible magnet & pole sensor, US Provisional Patent Application 62/522,487, 20 June 2017. Retrieved from https://www.researchgate.net/publication/335727758_Single-Coil_Pickup_with_Reversible_Magnet_Pole_Sensor
  4. Baker, D. L. (2018a). Single-coil pickup with reversible magnet & pole sensor, US Patent Application 15/917,389, 9 Mar 2018. Retrieved from https://www.researchgate.net/publication/331193192_Title_of_Invention_Single-Coil_Pickup_with_Reversible_Magnet_Pole_Sensor
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Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

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

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