LED lightbulbs are illuminating but not illuminating.
May 11, 2011 7:09 AM Subscribe
What is going on in LED lightbulbs? I mean the devices, not the industry.
posted by chairface to technology (9 answers total) 2 users marked this as a favorite
I just picked up two LED lightbulbs for my bathroom. Two things about these bulbs confuse me.
Why do I have to wait about 1 second for them to turn on? LEDs activate instantly in my experience. The bulbs are too small for giant transformers or capacitors so I'm not sure what the delay is.
Why do they have heat sinks that would make a Pentium 4 blush? The entire bulb only draws around 6 watts and LEDs have excellent efficiency, so just where is all this waste heat coming from that needs to be dissipated? The bulbs don't feel hot at all.