Switching device to linearly conduct a current between a gradient amplifier and a gradient coil assembly of an MRI system
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United States of America Patent
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May 31, 2005
Grant Date -
N/A
app pub date -
Mar 31, 2000
filing date -
Mar 31, 2000
priority date (Note) -
Expired
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Abstract
A switching circuit configured to substantially linearly conduct current between a source and a load includes a switching device and a steering circuit. The switching device has a conductive state in which a first portion of the current flows between the source and the load, the conductive state being dependent on the magnitude of the current. The steering circuit has a conductive state in which a second portion of the current flows, such that substantially the entire current is conducted between the source and the load. The switching circuit is particularly suited for use in a magnetic resonance imaging system to conduct gradient current between the gradient amplifiers and the gradient coils.
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