Method and apparatus for gradient power supply for a nuclear mag

Details Method and apparatus for gradient power supply for a nuclear mag Method and apparatus for gradient power supply for a nuclear mag

1996-03-26

1997-04-01

Arana, Louis M.

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

324318, G01V 300

Patent

active

056170300

ABSTRACT:
A gradient coil is connected to a controllable gradient amplifier via a first diagonal of a bridge circuit having four switches and unbiased diodes respectively connected parallel thereto. A capacitor that forms a resonant circuit together with the gradient coil is connected into the second bridge diagonal of the bridge circuit. A sinusoidal current is supplied through the gradient coil. Due to intentionally incomplete discharging of the capacitor at every other half-wave, an offset current can be superimposed on the sinusoidal current through the gradient coil.

REFERENCES:
patent: 5245287 (1993-09-01), Nowak et al.
patent: 5285161 (1994-02-01), Rzedzian et al.
patent: 5345178 (1994-09-01), Manabe et al.
patent: 5442290 (1995-08-01), Crooks
patent: 5521507 (1996-05-01), Rohan et al.

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