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Lead transformer

Lead transformer

Transformer, resistance springs

Transformer, resistance springs

1890-1900
super-precision current transformer

super-precision current transformer

Transformer for use with optical instruments

Transformer for use with optical instruments

1925-1955
Transformer for use with an electric bell

Transformer for use with an electric bell

1930-1959
Transformer, by D'Arsonval, French, 1890-1920

Transformer, by D'Arsonval, French, 1890-1920

1890-1920
Mahogany wall board with brass light fitment and switch

Mahogany wall board with brass light fitment and switch

1890-1910
16mm cineradiography set, Dr. R J Reynold's design, comprises grid-enclosed power-supply, tube stand, x-ray tube, rectifier, screening stand, patient stand, camera unit, control unit and accessories by Watson and Sons (Electro-Medical) Ltd, London, 1935

Reynolds' cineradiography apparatus

1935
Portable cautery transformer, with bayonet fitting for attaching to light socket, in leather covered case, made by Thackray, Leeds, English, 1920-1930

Portable cautery transformer

1920-1930
"Roentgen IV" transformer, by Watson & Sons (Electro-Medical) Limited, Wembley, London, England, 1960-1965

"Roentgen IV" transformer

1950-1951
Power adapter / transformer, by PowerPax, China, for RoboThespian 3 robot actor, by Engineered Arts Ltd., Truro, Cornwall, England, 2016

Power adapter / transformer, for RoboThespian 3 robot actor

2016
Single and double link transformer, Gaulard and Gibbs patent

Single and double link transformer

Transformer, metal, on metal trolley, by Westinghouse of U.S.A., early 20th century

Transformer, metal, on metal trolley

1901-1930
Transformer, made by County of London Electrical Supply Co., London, English, 1920-1940

Transformer, made by County of London Electrical Supply Co.

1920-1940