Stringed musical instrument pickup with two electromagnetic coil

Music – Instruments – Electrical musical tone generation

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G10H 318

Patent

active

056103573

ABSTRACT:
An electromagnetic pickup for a guitar or similar stringed musical instrument has two coil and core assemblies adapted to extend across the strings of the associated instrument at different points along the length of the strings, the coil and core assemblies being associated with a permanent magnet means creating magnetic flux circuits through the cores and the strings. Each of the cores is in the form of an elongated strip having teeth vertically extending therefrom with the teeth being equal in number to the strings of the instrument and spaced in conformity with the string spacing so that each tooth of each core can underlie a respective one of the strings. The elongated strip of one core is located adjacent to the strings and that of the other core is located remote from the strings so that somewhat different signals are induced by string vibration in the coils associated with the two different cores. Each core carries two separate coils. The coils of the two cores are connected so as to be series aiding with respect to voltages induced by string vibrations and to be series bucking with relation to voltages induced by stray magnetic fields. The coils are connected to a number of output conductors in such a way as to allow a performer to select for feed to an associated utilization system various different ones or combinations of the signals induced in the individual coils received on the two cores.

REFERENCES:
patent: 4026178 (1977-05-01), Fuller
patent: 4348930 (1982-09-01), Chobanian et al.
patent: 5292998 (1994-03-01), Knapp
patent: 5422432 (1995-06-01), Lace

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