the light emitting diode (led)
Post on 14-Jun-2015
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To be covered in the next 18 slides:
• History
• The Science of LEDs
• Why LEDs are so freakin’ awesome
• Cost
• 40 sec Case Study
• Common LED uses
Oleg’s Discovery
• 1920’s Russian radio technician and inventor by the name of Oleg Vladimirovich Losev
• Noticed that diodes used in radio receivers emitted light when current was passed through them
Oleg Losev
1,200 hrs
• 60 watts • $10 /year • 85 BTUs • Fragile
8,000 hrs
• 14 watts • $2.50 / year • 30 BTUs • Fragile • Mercury • Temp Sensitive
50,000 hrs
• 7 watts • $1 / year • 3.4 BTUs • Durable • Non-toxic • = freakin’
awesome
Incandescent Compact Florescent LED
Why LEDs are so freakin’ awesome
60W
1,200 hrs
• 60 watts • $10 /year • 85 BTUs • Fragile
8,000 hrs
• 14 watts • $2.50 / year • 30 BTUs • Fragile • Mercury • Temp Sensitive
50,000 hrs
• 7 watts • $1 / year • 3.4 BTUs • Durable • Non-toxic • = freakin’
awesome
Incandescent Compact Florescent LED
Why LEDs are so freakin’ awesome
60W
1,200 hrs
• 60 watts • $10 /year • 85 BTUs • Fragile
8,000 hrs
• 14 watts • $2.50 / year • 30 BTUs • Fragile • Mercury • Temp Sensitive
50,000 hrs
• 7 watts • $1 / year • 3.4 BTUs • Durable • Non-toxic • = freakin’
awesome
Incandescent Compact Florescent LED
Why LEDs are so freakin’ awesome
60W
40 sec. LED case study
• Portland, Oregon USA
• Replace 13,000 Incandescent traffic light lamps with LEDs (150 watts each)
“Due to their smaller size, increased durability, increased lifespan and low energy consumption, LED lighting systems will undoubtedly take over as the primary lighting source in future vehicles.” -Audi Motors
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