Electromechanical RF switch activated by external magnetic field

Details Electromechanical RF switch activated by external magnetic field Electromechanical RF switch activated by external magnetic field

1996-07-17

1998-11-24

Arana, Louis M.

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

324322, G01V 300

Patent

active

058412786

ABSTRACT:
An electromechanical switch for use in a magnetic resonance imaging (MRI) apparatus is constructed of non-magnetic materials and includes a pivotable solenoid operative for moving a contact in response to forces created by interaction between passing through the electromagnet and the primary or static field of the MRI imaging magnet. The switch can be used to disconnect the RF receiver of the MRI apparatus from the receiving antenna during transmission of RF excitation signals.

REFERENCES:
patent: 4766378 (1988-08-01), Danby et al.
patent: 5050605 (1991-09-01), Eydelman et al.
patent: 5162738 (1992-11-01), Sepponen
patent: 5442291 (1995-08-01), Tyburn et al.
"Toggle Switch"--two-page schematic designed by Fonar Corporation. (Date of publication unknown).

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