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



JEMA is moving from July 17th, 2017.

Our new address is situated within 500 meter of our present location and will remain in the Einstein Scientific Park of Louvain-la-Neuve.


Parc scientifique Einstein
Rue de Rodeuhaie, 8
1348 Louvain-la-Neuve



JEMA supplies 3 systems of 3 MW DC which will feed plasma torches. This achievement, dedicated to the end-customer Metallo Chimique NV, in Beerse, close to Antwerp, was purchased from Swedish Scanarc Plasma Technologies AB company, acting in Reverse Metallurgy sector. This process will lead to improve the recycling of different metal and decrease metal import. See the presentation movie…


JEMA is honoured by the venue of Ion Beam Applications CEO, Mr Olivier Legrain and the Vice-President Supply Chain, Mr Jean-Louis Guelton.


JEMA supplies a DC power supply (2000A – 160 V – 20 ppm stability) for the main coil of one of the two cyclotrons of GANIL (Le Grand Accélérateur National d’Ions Lourds) in Caen - France.


Sumitomo Heavy Industry release new orders for DC power supplies. These regular orders of high performance equipment show the high reliability of JEMA power supplies in the Japanese market.


JEMA is honoured by the venue of Walloon Exportation Agency CEO, Mrs Pascale Delcominette.


JEMA establishes a new record in sales intake in the protontherapy sector in 2015. The modular system ‘Mosaic’ is dedicated to the supply of beamlines, made of dipoles and quadrupoles and is totally adaptive to the magnets various characteristics. See here the new Mosaic technical datasheet…


The cathodic protection sector intake reaches a record in 2015, which reinforce the dominant position in the regulated power supplies, installed in Belgium and abroad for many years.



JEMA supplies several power installations for the glass group AGC, giving them the possibility to pilot with ultimate precision their metal deposition process. First designed for the Belgian processes, they are now exported also to the Head Japanese production lines.


Brussels airport trusts once again JEMA for their high quality battery chargers which is installed in all power substation of the airport.

The Specialist in high performance DC power supplies and made to measure coil-based products.

For a number of decades, the company JEMA (also known under the name JEMA Elec) has been the uncontested Belgian specialist in high performance DC power supplies while remaining a benchmark in the production of made to measure coil-based dry and resistance transformers.

JEMA's high performance DC power supplies contribute daily to the treatment of hundreds of patients in numerous proton therapy treatment centres (cancer treatment by proton beams) in Europe, Asia and the United States.

Generally, and beyond a strong presence in the medical technology sector, JEMA direct current power supplies have applications in numerous sectors relying on particle accelerators (research laboratories, industrial or food sterilisation...) and in the most demanding industrial fields (thin film vapour deposition – pvd, polymerisation...)..

JEMA also designs and produces all types of rectifiers, battery chargers and cathodic protection, which are used in numerous sectors in infrastructure or industry. Furthermore, the experience acquired by JEMA since the end of the 1930s in the design and production of coil-based products allows us to respond to all your needs for one-off items and small or medium-sized series of dry transformers and resistances.

The design, production and tests for all these products are carried out at our premises located in the Einstein science park, Louvain-la-Neuve (Belgium), close to the university centre.

JEMA in partnership with its clients and suppliers, in collaboration with universities, industrial partners and with the assistance of the Walloon Region develops new products with increased performance and better adapted to the requirements of international and environmental standards.