Bi-directional hall-effect control device

Details Bi-directional hall-effect control device Bi-directional hall-effect control device

1997-11-28

2000-02-29

Donovan, Lincoln

Electricity: magnetically operated switches, magnets, and electr

Permanent magnet-actuated switches

335207, H01H 900

Patent

active

060314397

ABSTRACT:
A control device for converting a manual input into an electrical signal is provided. The control device includes a control button, a first magnet having a first predetermined polarity, a second magnet having a second predetermined polarity, and a hall-effect sensor located adjacent to the control button. The control button is mounted for pivotal displacement about a neutral position in accordance with the manual input. The first magnet and the second magnet are mounted to the control button. The polarity of the second magnet is opposite the polarity of the first magnet. The hall-effect sensor has an electrical input and an electrical output. The electrical signal produced by the control device may, for example, be used to control the velocity of a motor, which rotates an ultrasound transducer.

REFERENCES:
patent: 5399965 (1995-03-01), Heberle
patent: 5402793 (1995-04-01), Gruner et al.
patent: 5413107 (1995-05-01), Oakley et al.
patent: 5554964 (1996-09-01), Jansseune
patent: 5578977 (1996-11-01), Jansseune
patent: 5646587 (1997-07-01), Miyazawa et al.

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