Voltage regulator; in glass and iron box. 110 volts, 50 amps. Manufactured by Metropolitan-Vickers Electrical Co. Ltd Voltage Regulator in a Glass and Iron Box 1945
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