Amperite type 1120 regulator tube
name: label: maker
content: Amperite
notes: label: Description (Brief)
content: A two-pin plastic base with frosted domed envelope. Stamped on top: "Amperite / 11-20 / Regulator"; written on envelope in red: "127 Kr [??] Iron / Bal 12". A coiled tungsten filament is strung between mica plates. Ballast resistance. Reference: https://www.radiomuseum.org/tubes/tube_11-20.html.
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.323253
label: catalog number
content: 323253
label: accession number
content: 241556
objectType: label: Object Name
content: Ballast
label: Object Name
content: resistance
label: Object Type
content: ballast
physicalDescription: label: Measurements
content: overall: 5 1/4 in x 2 in; 13.335 cm x 5.08 cm