Gradient amplifiers for MRI scanners

High precision amplifiers with voltages >1 kV and currents up to 1000 A

MRI-scanner with patient

What can it do?

MRI scanners require high-precision amplifiers (on the ppm scale). These amplifiers deliver pulses at voltages >1 kV and currents from 500 to 1000 A. Good MRI scans need a degree of precision in the mA range.


I therefore made a switched-mode multi-level high-power amplifier that turns an input of ±10 V into an output of ±1000 V. A couple of patent applications were submitted during the development path.

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Anton Driessen electronics expert