Early Beginnings

Claude Lyons Ltd. was founded in 1918 by Claude Lyons in Liverpool, UK. The company initially focused on precision instruments and quickly established itself as a leader in the field of AC voltage control. By 1933, Claude Lyons introduced the Variac variable transformer to the United Kingdom, a pivotal moment that would shape the company's future.

The Variac Variable Transformer

The Variac, still a trading brand to this day, was originally developed by the General Radio Company in the USA. It was a revolutionary device that allowed for the smooth variation of voltage. The earliest models featured a toroidal core with a single-layer winding of insulated copper wire and a carbon brush to select the output voltage. This design enabled precise control over voltage levels, making it an essential tool in various applications.

Technological Advancements

Over the decades, Claude Lyons continued to innovate and improve the variable transformer. In the 1950s, the company introduced a spiral strip wound core, which allowed for higher flux density and improved performance. The introduction of a hard precious-metal coating to the contact surface further enhanced durability and performance under surge conditions.

Expansion and Consolidation

Claude Lyons expanded its product range by acquiring Berco Controls Limited and The Zenith Electric Company Limited. This expansion led to the rationalisation of the product lines under the UK Registered Trademarks Regavolt® and Varatran®, which included epoxy-encapsulated variable transformers.

Durability and Longevity

One of the hallmarks of Claude Lyons' products is their durability. Many of the variable transformers supplied by the company have remained in service for over 50 or 60 years. With proper care and maintenance, these units can enjoy an almost indefinite lifespan, a testament to the quality and reliability of Claude Lyons' engineering.

The Continuing Success of the Regavolt® Brand

Claude Lyons Ltd. has continued to innovate with the Regavolt® brand, known for its exceptional durability and performance. The Regavolt® range of variable transformers has become synonymous with quality and reliability in voltage control technology. From its early beginnings in 1918 to its continued innovation and expansion, Claude Lyons has played a crucial role in the development and evolution of the variable transformer. The company's commitment to quality and excellence has left an indelible mark on the industry. As we look to the future, Claude Lyons remains dedicated to pushing the boundaries of voltage control technology, ensuring that their legacy of innovation continues for generations to come.