Claude Lyons introduced Variable Transformers under the trade name ‘Variac’ back in 1933 and we were proud to acquire the Regavolt® brand from Claude Lyons in 2016 and continue the long tradition of supplying high-quality Variable Transformers from our factory based in Hertfordshire, UK. They are available open or cased, individual or ganged, and in single or three-phase configurations, manual or motor-driven designed to meet the most demanding applications. Regavolt® specialise in meeting your bespoke requirements and are confident in providing a high-quality Variable Transformer that will operate reliably for many years to come.

Contact our highly experienced Engineers who will be happy to advise you and specify the correct product to meet your application.


Regavolt products can be found on our Lyons Instruments website

UK Website