Magnetically biased electromagnet for audio applications
AssigneeApple Inc.
InventorsChristopher R. Wilk, Martin E. Johnson, Patrick Kessler, Nathan A. Johanningsmeier
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AssigneeApple Inc.
InventorsChristopher R. Wilk, Martin E. Johnson, Patrick Kessler, Nathan A. Johanningsmeier
Estimating the term…
An electronic device having an enclosure having a top panel and a bottom panel. An electromagnet is mounted within the enclosure, the electromagnet having a core portion attached to the top panel and a coil connected to the core portion. An attractor plate is attached to the bottom panel, the attractor plate forming part of a magnetic circuit of the electromagnet such that when an electrical audio signal is applied to the electromagnet, the bottom panel vibrates and produces a sound. A permanent magnet is further attached to the core portion, the permanent magnet is configured to create a bias in the magnetic circuit so as to modify a distortion in the sound.
An electronic device comprising:
An electronic audio system comprising:
A method of outputting sound from an electronic device comprising:
Dependencies are inferred from the claim text.