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Voltage Regulator in a Glass and Iron Box

1945

Metropolitan-Vickers Voltage Regulator

1950
Thury electromechanical voltage regulator used at Warwick Castle on 100V DC hydro-electric system, around 1900.

Thury voltage regulator

1900
Two voltage regultors for the home (to encourage domestic energy-saving measure), made by Vphase, Chester, and supporting documents.

Two voltage regultors for the home (to encourage domestic energy-saving measure)

2010