High Performance Power Supplies
  • 5 High current rectifier
    7V – 6500A
  • 2 RF Final Amplifier
    Anode Power Supply
  • 4 MOSAIC System
    Modular CIME HPPS
  • 1 Transformers
  • 3 Cyclotron Power Supply
    Driver Amplifier


A long road from transformers to high performance DC power supplies

Founded in 1937 in Brussels (Belgium) the company JEMA first specialised in the production of coil-based products such as transformers and resistors. JEMA then turned very quickly to specific coil-based products fully adapted for the particular needs of its clients.

With time and the evolution of electrical components, JEMA evolved towards the production of electric cables with complex topologies based on its coil-based products.  From then on, production has been directed towards rectifiers, inverters and even battery chargers. Finally, thanks to its growing mastery of electromagnetism and associated technology, JEMA has specialised in power electronics intended principally for direct current applications.

The end of the 70s marks an important turning point in the company's history. It was at this time the JEMA studied, developed and supplied the various power supplies required by the particle accelerator in the Centre de Recherche du Cyclotron at the Université Catholique de Louvain-la-Neuve (CRC-UCL). From that moment on, JEMA has definitively specialised in the development of high performance power supplies.

In 1990, JEMA relocated to the Louvain-la-Neuve science park. This move allowed it to be close to centres of excellence like the faculty of applied sciences and the CRC and thus to breathe new life into the development of its high performance products. It also allowed JEMA to move closer to one of its principal clients, a global leader in the development of particle accelerators and proton therapy systems.

Currently, activities linked to high performance power supplies represent 75% of JEMAs revenues.  Power supplies produced under the name JEMA or JEMA ELEC are installed in numerous research centres, medical institutions and leading industrial companies around the world.

In 2008, the Belgian private equity company JEMA declared its desire to reposition itself internationally as a major player in the field of high performance DC power supplies. To this end, its team of experienced engineers has been given a boost with new resources which contribute daily to the improvement of its systems, the development of new products and the expansion of JEMAs range of services. 

1937 1960 1970 1990 1995 2011