Started in 1920 by Adrien de Backer (ADB) in Belgium, manufacturing electrical equipment for laboratories, mainly resistances (known as rheostats) to limit and vary electrical current.
In 1938, ADB began a range of spotlights.
1950 brought innovations including dimmers based on Thyratrons, and magnetic amplifers.
1965 Thyristor-based dimmers introduced.
1985 Microprocessor-based memory lighting controls introduced.
In 1987, ADB was acquired by Siemens.
In 2016, ADB was aquired by Clay Paky, which in turn is part of the Osram group.