galvanometer shunt
Datecirca 1915
Inventory Number0467
ClassificationGalvanometer Shunt
Subject
Maker
Leeds & Northrup Company
1903 - 1995
Cultural Region
Place of Origin
Place of Use
Dimensions12.5 x 13 x 13 cm (4 15/16 x 5 1/8 x 5 1/8 in.)
Material
DescriptionGalvanometer shunt with four binding posts and adjustment dial mounted in center of hard rubber panel attached to top of square cherrywood box. The dial is marked .01, .001, 0, INF.
Signedon metal plaque on side of box: LEEDS & NORTHRUP CO. / SCIENTIFIC INSTRUMENTS / PHILADELPHIA / SER. NO. 232633 / MADE IN U.S.A.
FunctionA galvanometer shunt is a resistor that prevents too much current from passing through a galvanometer and also increases its range. When the shunt is connected in parallel with the galvanometer, the total current is distributed between the galvanometer and shunt.
ProvenanceFrom the Department of Physics, Lyman Lab, Harvard University, 10/30/1968.
Electric Manufacturing Company
Date: late 19th-early 20th Century
Object number: 0372
Leeds & Northrup Company
Date: circa 1948
Accessories: power cord
Object number: 2000-1-0040
Leeds & Northrup Company
Date: circa 1910
Object number: 1997-1-0689
Leeds & Northrup Company
Date: 1930-1950
Accessories: mahogany cover
Object number: 1997-1-0182
Leeds & Northrup Company
Date: circa 1950
Object number: 1997-1-1095
Leeds & Northrup Company
Date: circa 1910
Accessories: carrying case; spare self-contained mirror and moving coil
Object number: 0282