Electromagnetic pickup for stringed musical instruments

An electromagnetic pickup device for musical instruments of the type having elongated magnetizable vibrating elements, said device comprising

• a permanent magnet including a configured surface adjacent the magnetizable vibrating elements, said configured surface providing a variation of the magnetic field effecting respective ones of said elements in accordance with the magnetizability of said elements, and
• a low impedance coil surrounding said permanent magnet,
• wherein said permanent magnet is a rectangular bar magnet having predetermined length and width dimensions, and being magnetically polarized perpendicularly to said configured surface, and wherein said configured surface is a configured edge surface along said length dimension and provides a varying width dimension of said bar magnet facing said vibrating elements, and
• wherein said configured edge surface includes step edge surface portions to provide stepped width dimensions of said rectangular bar magnet.

An electromagnetic pickup device for musical instruments of the type having elongated magnetizable vibrating elements, said device comprising

• a permanent magnet including a configured surface adjacent the magnetizable vibrating elements, said configured surface providing a variation of the magnetic field effecting respective ones of said elements in accordance with the magnetizability of said elements, and
• a low impedance coil surrounding said permanent magnet,
• wherein said permanent magnet is a rectangular bar magnet having predetermined length and width dimensions, and being magnetically polarized perpendicularly to said configured surface, and wherein said configured surface is a configured edge surface along said length dimension and provides a varying width dimension of said bar magnet facing said vibrating elements, and
• wherein said configured edge surface includes at least one notch edge surface portion.

An electromagnetic pickup device for musical instruments of the type having elongated magnetizable vibrating elements, said device comprising

• a permanent magnet including a configured surface adjacent the magnetizable vibrating elements, said configured surface providing a variation of the magnetic field effecting respective ones of said elements in accordance with the magnetizability of said elements, and
• a low impedance coil surrounding said permanent magnet,
• wherein said permanent magnet is a rectangular bar magnet having predetermined length and width dimensions, and being magnetically polarized perpendicularly to said configured surface, and wherein said configured surface is a configured edge surface along said length dimension and provides a varying width dimension of said bar magnet facing said vibrating elements, and
• wherein said configured edge surface includes notch and step edge surface portions.

An electromagnetic pickup device for musical instruments of the type having elongated magnetizable vibrating elements, said device comprising

• a permanent magnet including a configured surface adjacent the magnetizable vibrating elements, said configured surface providing a variation of the magnetic field effecting respective ones of said elements in accordance with the magnetizability of said elements, and
• a low impedance coil surrounding said permanent magnet,
• wherein said permanent magnet is a rectangular bar magnet having predetermined length and width dimensions, and being magnetically polarized perpendicularly to said configured surface, and wherein said configured surface is a configured edge surface along said length dimension and provides a varying width dimension of said bar magnet facing said vibrating elements, and
• wherein said coil includes conducting means wound around said permanent bar magnet, said conducting means being wound against said bar magnet at an end having larger width dimensions and being overlappingly wound upon itself at an end having smaller width dimensions of said bar magnet.

An electromagnetic pickup device for musical instruments of the type having elongated magnetizable vibrating elements, said device comprising

• a permanent magnet including a configured surface adjacent the magnetizable vibrating elements, said configured surface providing a variation of the magnetic field effecting respective ones of said elements in accordance with the magnetizability of said elements, and
• a low impedance coil surrounding said permanent magnet,
• wherein said permanent magnet is a rectangular bar magnet having predetermined length and width dimensions, and being magnetically polarized perpendicularly to said configured surface, and wherein said configured surface is a configured edge surface along said length dimension and provides a varying width dimension of said bar magnet facing said vibrating elements, and
• wherein a steel shim is disposed along said configured edge surface at a portion of reduced width dimensions, and a second steel shim is disposed along a second edge surface of said rectangular bar magnet opposide said configured edge surface.