electromagnetic coil with leather covered cable
Datelate 19th-early 20th Century
Inventory NumberRS0554
ClassificationInductance Coil
Subject
Maker
American
?
Cultural Region
Dimensions8 x 12 x 12 cm, 5 lb. (3 1/8 x 4 3/4 x 4 3/4 in., 2.3 kg)
cable: 54 x 2.4 x 5 cm (21 1/4 x 15/16 x 1 15/16 in.)
cable: 54 x 2.4 x 5 cm (21 1/4 x 15/16 x 1 15/16 in.)
Material
DescriptionThe coil is encased in a cylindrical body with rubber piece wrapped around it. Discoidal brown interior with hole through the center. Leather wrapped cord attached with rectangular 1-pronged plug at end.
Signedunsigned
Inscribedcarved and white filled on top panel: 101 / C
FunctionWhen electric current passes through an induction coil, it creates a magnetic field, and stores energy in the form of a magnetic field. This has many uses in electric circuits, such as the filtering of unwanted high frequencies, and the tuning of radio circuits to transmit or receive on a specific frequency.
For more information about inductor coils, see the Wikipedia page here.
For more information about inductor coils, see the Wikipedia page here.
Date: 1890-1930
Object number: RS0508
Radiation Laboratory of the Massachusetts Institute of Technology
Date: circa 1915
Object number: 0480
