Sylvania "Thrift-Mate" impedance modifier for TM50 lamp
date: label: Date made
content: c1979
label: date made
content: ca 1979
label: date made
content: ca. 1979
name: label: maker
content: Sylvania Electric Products Inc.
notes: label: Description (Brief)
content: This unit (with its original fluorescent tube attached) was intended to replace one lamp in a two-lamp fluorescent fixture. By modifying the impedance of the circuit, a 50% reduction in light output could be obtained with an almost equal power saving. Sylvania marketed this 50% reduction unit and a 33% unit as stop-gap measures in response to the electricity price spikes during Energy Crisis. Characteristics: Medium bi-pin base with fiber insulator. Coil-core transformer to provide current for electrode warming, a 2 microfarad capacitor, and a bi-metal switch are housed in a two-piece, clam-shell style plastic housing. Lamp given to donor by co-inventor William Roche in 1996. (Interview on file). See also, US patent 4,163,176 to Cohen, Paget, Roche, Sadoski, and Bessone; and Impedance Modified Fluorescent Lamp by Cohen and Sadoski in Journal of the Illuminating Engineering Society, April 1979, page 179.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Harold D. Wallace, Jr.
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 2003.0030.05
label: accession number
content: 2003.0030
label: catalog number
content: 2003.0030.05
objectType: label: Object Name
content: lamp component
physicalDescription: label: Measurements
content: overall: 5 in x 1 5/8 in; 12.7 cm x 4.1275 cm