Wireless Specialty "Triode B" two-stage audio amplifier
date: label: date made
content: ca 1919
label: date made
content: c 1919
name: label: maker
content: Wireless Specialty Apparatus Co.
notes: label: Description (Brief)
content: Marked: "Two stage Audio Amplifier / Type Triode-B Serial No. 284 / Manufactured by Wireless Specialty Apparatus Co. / for Radio Corporation of America." Unit is a two stage audio frequency amplifier which provides transformer coupling between stages. Input impedance of each tube is controlled by a filament rheostat. This specimen consists of two tubes (missing) two rheostats, and two audio transformers. On the panel are terminals for connecting 6 volt filament and 40 volt plate batteries. REF: "Radio Equipment Catalog: Wireless Specialty Apparatus Co.", (1919) page 41.
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.320778
label: catalog number
content: 320778
label: accession number
content: 241556
objectType: label: Object Name
content: radio receiver
label: Object Name
content: audio amplifier
physicalDescription: label: Measurements
content: overall: 11 3/4 in x 7 3/4 in x 7 in; 29.845 cm x 19.685 cm x 17.78 cm