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- Jefferson model 280 radio tube charger
Jefferson model 280 radio tube charger
Object Details
- Description (Brief)
- Marked on plate: "Jefferson No. 280 / Radio Tube Charger / [directions] / Jefferson Electric Mfg. Co. / Chicago, USA"; on unit: "110 volts 50-133 cycles." A radio tube filament activator for thorium type tubes. A standard 201-A socket is mounted on a metal frame with a slot arrangement permitting high or low voltages to be placed across the filament pins.
- Location
- Currently not on view
- Credit Line
- from Franklin Wingard
- Data Source
- National Museum of American History
- date made
- ca 1925
- ID Number
- EM.321286
- catalog number
- 321286
- accession number
- 241556
- model number
- 280
- maker
- Jefferson Electric Mfg Co.
- Object Name
- tube changer
- tube charger
- tube renovator
- tube rejuvenator
- Measurements
- overall: 3 1/2 in x 3 1/2 in x 2 3/4 in; 8.89 cm x 8.89 cm x 6.985 cm
- place made
- United States: Illinois, Chicago
- See more items in
- Work and Industry: Electricity
- Record ID
- nmah_1336500
- Usage
- CC0
