Bio

David R. Bertenshaw was a electronic design engineer rising to R&D Director at Rank Strand Electric / Strand Lighting Ltd from 1971-1997, developing stage and studio lighting and control equipment. In the 1970s he was the designer of the MSR, MMS and Duet lighting control systems, with MMS replacing Q-File as the preferred TV lighting control. By 1980 he managed the design of the Galaxy Lighting Control system, which became the new standard lighting console in many UK and European studios. Several other important products were introduced, inc. MCM, LD90 and EC90 dimmers and 430/530/550 consoles. In 1998 he joined Adwel International Ltd to manage their European division for large electrical machine condition monitoring. After retiring in 2008 he established ENELEC Ltd as a condition monitoring consultancy also researching stage lighting history. He has published over 50 papers and articles and 6 patents and recently refurbished a Galaxy console as a training aid for Rose Bruford college.

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