Integral compact fluorescent lamp
date: label: Date made
content: ca 1995
label: date made
content: ca. 1995
name: label: maker
content: Philips Lighting Company
notes: label: Description
content: When incandescent lamp manufacturers want to make lamps with different ratings, 40 watt and 60 watt lamps for example, they simply alter the length of the coiled tungsten filament. Since the filament is rather small in either case, there's little apparent difference in the two lamps. Compact fluorescent lamps (CFLs) are different.
label: Description
content: This lamp is a demonstration triple-tube compact fluorescent lamp made by Philips about 1995. One way to increase the light output from CFLs is to make the tube longer. In this lamp the three tubes are connected by thin glass passages called bridge-welds, creating a continuous path for the electric current to travel. Using bridge-welds allowed the engineers to place the three tubes very close together, reducing the size of the lamp as a whole. The plastic base-skirt that houses the control electronics is clear so that whoever is demonstrating the lamp can show the electronic circuitry.
label: Description
content: Lamp characteristics: Nickle-plated, medium-screw base with clear plastic skirt that houses an electronic ballast and a starter. Three fluorescent tubes are connected by bridge-welds. Included are two electrodes, mercury, and a phosphor coating. No external cover is placed over the tubes. Lamp was operational when donated.
setName: label: See more items in
content: Work and Industry: Electricity
label: See more items in
content: Energy & Power
label: Exhibition
content: Lighting a Revolution
label: Exhibition Location
content: National Museum of American History
publisher: label: Related Publication
content: Lighting A Revolution exhibition website
label: Related Web Publication
content: http://americanhistory.si.edu/lighting/
creditLine: label: Credit Line
content: from Philips Lighting Co.
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1997.0389.30
label: catalog number
content: 1997.0389.30
label: accession number
content: 1997.0389
objectType: label: Object Name
content: fluorescent lamp
label: Object Name
content: discharge lamp
physicalDescription: label: Physical Description
content: plastic (overall material)
label: Physical Description
content: glass (overall material)
label: Physical Description
content: mercury (overall material)
label: Physical Description
content: metal (overall material)
label: Measurements
content: overall: 5 1/2 in x 2 1/8 in x 2 1/8 in; 13.97 cm x 5.3975 cm x 5.3975 cm