Incandescent lights [Re: It's time to restore the 11/45.]

[Jon Elson]

On 02/06/2015 01:05 AM, Peter Corlett wrote:
> LED lighting is actually delivering what the CFLs falsely 
> claimed, provided one doesn't need more than about 400lm 
> per bulb due to heat issues. For the customary single bulb 
> per room in typical UK lighting, it means we're stuck with 
> CFLs until the technology improves or one replaces the 
> light fitting with one that takes multiple bulbs. We'll 
> probably see a whole load of crappy LED bulbs when that 
> finally becomes mainstream though. 
Yes, my home-made LED retrofits are 44" long, made on two 
strips of 22" x 2"
PCB material, as a heat sink.  They still run somewhat warm, 
but probably
no more than 50 C.  I think they will last a LONG time.

These LEDs are rated at 102 Lm/W, so the efficiency is 
insanely high.
20 W of LEDs easily outshines TWO 48" fluorescent tubes.

Jon