Magnetic induction stringed instrument pickup

Details Magnetic induction stringed instrument pickup Magnetic induction stringed instrument pickup

1975-03-10

1976-06-15

Weldon, Ulysses

Music

Instruments

84 116, G10H 300

Patent

active

039629465

ABSTRACT:
A magnetic induction type electrical pickup for a stringed musical instrument has two coils each having an opening receiving one or more permanent magnet elements. The magnet elements establish a magnetic circuit through the two coils the reluctance of which is varied by the vibration of a string to induce signal voltages in the coils. The arrangement and polarities of the permanent magnet elements, and the arrangement, winding direction and interconnection of the two coils is such as to minimize the effect of stray magnetic fields, having any random direction, on the output of the pickup. That is, the pickup is one which is highly effective in suppressing noise arising from ambient magnetic fields generated by nearby electrical devices. Also, microphonics or squeals are inhibited by construction features which repress resonant vibration of internal parts of the pickup.

REFERENCES:
patent: 2817261 (1957-12-01), Fender
patent: 2896491 (1959-07-01), Lover
patent: 3249677 (1966-05-01), Burns et al.
patent: 3472943 (1969-10-01), Kawabata et al.
patent: 3541219 (1970-11-01), Bair

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