Thordarson 3.5 to 1 amplifying transformer
date: label: date made
content: ca 1925
name: label: maker
content: Thordarson Electric Manufacturing Company
notes: label: Description (Brief)
content: Thordarson audio frequency amplifying transformer, standard audio transformer, 4 binding posts. Marked: "Turns ratio / 3-1/2 to 1 / Patents Pending / Neg. Fil. / Pos. B / Grid / Plate". Reference: Clymer-Greenwood, page 167, illustration is of a 6 to 1 ratio transformer.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Franklin Wingard
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.322434
label: catalog number
content: 322434
label: accession number
content: 241556
objectType: label: Object Name
content: Transformer, Audio
label: Object Name
content: transformer
label: Other Terms
content: Transformer, Audio; Components; Radio and Television; Radio and Television
physicalDescription: label: Measurements
content: overall: 2 1/2 in x 2 1/2 in x 1 3/4 in; 6.35 cm x 6.35 cm x 4.445 cm