Lake Shore Cryotronics.
- Superconducting magnet charging power supplies.
- http://www.lakeshore.com/mag/mps/mpsm.html

American Magnetics, Inc.
- AMI manufactures superconducting magnet systems and cryogenic level instrumentation, and power supplies for charging the magnets.
- http://www.americanmagnetics.com/

Cryomagnetics
- SPS-Series Power Supplies for Superconducting Magnets
- http://www.cryomagnetics.com/

Magnavolt
- Magnet power supplies, linear controlled from +/-6.5V to +/-350V, +/-0.1A to +/-120A. Fast programmable, constant current,continuous zero crossing, 4-quadrant operation.
- http://www.magnavolt.com/