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EWJona 10S50 Shown here is an early decorative lamp, made in the 1910s and coated with a red lacquer. Typical of incandescent lamps of the time, it features a straight tungsten filament operating in vacuum, and a straight-sided glass bulb with an external exhaust tip. Interestingly, the lamp is designed for a 20-V operation, probably in a light string. Six of such lamps are needed for an direct operation on 110 V mains with a 10-V safety margin. Keywords: Lamps

EWJona 10S50


Shown here is an early decorative lamp, made in the 1910s and coated with a red lacquer. Typical of incandescent lamps of the time, it features a straight tungsten filament operating in vacuum, and a straight-sided glass bulb with an external exhaust tip. Interestingly, the lamp is designed for a 20-V operation, probably in a light string. Six of such lamps are needed for an direct operation on 110 V mains with a 10-V safety margin.
_IMG2041.jpg _IMG1977m.jpg EWJona_10S50_red.jpg 028.JPG Osram_HQI-TS_150W21NDL_Excellence.jpg
Lamp/Fixture Information
Manufacturer:E.W. Jonas
Model Reference:10S50
Lamp
Lamp Type:Incandescent
Filament/Radiator Type:Straight tungsten filament
Base:E27
Shape/Finish:Straight sided, lacquered red
Burning Position:Universal
Electrical
Wattage:10 W
Voltage:20 V
Current:0.5 A
Optical
Colour Temperature:Red
Physical/Production
Factory Location:Switzerland
Fabrication Date:1910s
Application/Use:Decorative
File information
Filename:EWJona_10S50_red.jpg
Album name:Max / Misc lamps and lighting
Keywords:Lamps
Filesize:682 KiB
Date added:Dec 14, 2024
Dimensions:798 x 1200 pixels
Displayed:5 times
Model:X-E4
Software:Adobe Photoshop CS5 Windows
URL:https://trad-lighting.net/gallery/displayimage.php?pid=608
Favorites:Add to Favorites

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Ria   [Dec 14, 2024 at 11:03 PM]
Lovely old lampses Bulb Man

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