Thoradson type R wireless transformer
date: label: date made
content: ca 1922
name: label: maker
content: Thordarson Electric Manufacturing Company
notes: label: Description (Brief)
content: Plate stamped: "Wireless Transformer / Type R No. 6527 / K.V.A. 1/2 Cycle 60 / Volts: Pri 120 Sec 10000 / Thordarson Electric Mfg. Co. / Chicago, Illinois." On unit: "Patent March 3, 1908". Reference: F. D. Pitts Co., Inc. Radio Apparatus Catalog No. 22, page 73 (ca 1922). Air-cooled transformer containing a magnetic shunt control that protects the unit from all undue current surges. The manufacturer claims an efficiency of 92%. Unit connected directly to source of current without impedance or choke coil.
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.321285
label: catalog number
content: 321285
label: accession number
content: 241556
objectType: label: Object Name
content: Electron Tube, Diode
label: Object Name
content: transformer
label: Other Terms
content: Electron Tube, Diode; Electron Tubes
physicalDescription: label: Measurements
content: overall: 10 1/2 in x 9 in x 5 in; 26.67 cm x 22.86 cm x 12.7 cm