Don't put a 100w bulb in a 75w fixture - PeachParts Mercedes-Benz Forum

kknudson · #19 11-04-2010, 05:08 PM

Quote:

Originally Posted by MTI

Philips makes a $60 12W LED bulb that is equal to a 60W . . . 25x the life, using 80% less juice . . .

The glow from the Philips EnduraLED is as comforting as Mom’s cooking, thanks to a special phosphor coating that absorbs the blue glare and transforms the light into a warm, golden hue — 2,700 degrees on the Kelvin scale. And using just 12 watts, the lamp matches the brightness of a 60-watt incandescent. Yet putting out all that shine exposes the LED’s kryptonite: heat. If diodes get too toasty, they’ll go supernova. So the Endura features cast-aluminum heat sinks to dissipate thermal energy from the LED panels. The result is a bulb that can screw into any socket, turn on instantly, and last 25 times longer than an equivalent incandescent, all while using 80 percent less power. Brilliant!

I'm all for LEDs, but I cannot in anyway justify the cost.
I expect them to come down in cost soon.

One issue that I do not like it that one discussion of them refered to lamps etc being made with permament LEDs, so when the light does go the lamp etc is trash.
Seems wasteful at the expense of saving a few pennies.
I hope this does not come about.

I'll try sometime and calculate the cost differences, energy wise at least.

But lifetime estimates are tough.
New incandescents are better and last longer than they used to.
Since the vast majority of mine are on high end dimmers that ramp up and down, they are not subjected to that jolt when they come on, so they last MANY years.
The 5 in the family room are well over 10 years old and still going strong, the kitchen ones 6+ and the same thing.
But the exterior house lights rarely make 2 years, they are automaticly on about 6 hours a day, and the one in the laundry room (1 incandescent, 2 SLOW start CFLs) is replaced regularly also. It is on a strat switch, the reason it is there is the CFLs take a long time before they produce enough light to move around safely, once running they are fine though.

The ramp up down (IMHO) makes a HUGE difference in the lifespan of bulbs, as some others that are not on dimmers do need to be replaced more often.

The flourescents(regular tube) in my basement (18 bulbs), and garage (24 bulbs) are 10+ years old and I've only replaced a few.