Electrical Business


Osram Sylvania celebrates 25th anniversary of its CFL

April 24, 2010 | By Anthony Capkun

Osram Sylvania is marking the 25th anniversary of its first modern, compact fluorescent (CFL) light bulb that screwed in like an incandescent and featured an integrated electronic ballast.

According to Wikipedia, the modern CFL was invented by Edward E. Hammer,
an engineer with General Electric, in response to the 1973 oil crisis.
In 1980, Philips introduced its model SL—a screw-in lamp with integral
ballast. Then, in 1985, Osram started selling its model EL lamp.

CFL technical specifications –
then and now
1985 2010
Average lifespan 6000 hours 12,000 hours
Size 8.1 in.  3.8 in.
Wattage 7, 11, 15, 20 5, 10, 13, 20, 23, 26
Shape Stick Twist
Colour temperature Warm White Warm White, Bright White, Daylight
Mercury 10-15 mg <1.5 mg
Price $50.00 $4.99

 * Info provided by Osram Sylvania


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