LED Lights Are You Ready?

[john p]

XYZDNL read my post #6. Where I have tried to explain it all. (probably badly)
This is my thoughts on the subject.. forget the figures they really dont mean much. If you have replaced the lights whatever they are with measured lower power draw LEDs and you are happy with the result. Then all is well. happy days.
Who has ever designed their lighting for their home and done light measurements and calculated the light level for each room???
99.999 % of people just add light fittings until they find it looks harmonious to them then they add lamps of some description and wattage until the room reaches the desired lighting level.
Some people want something close to daylight in every room some just like subdued lighting.. there is no right or wrong..
In a commercial building /offices /workshops. manufacturing facility. things are different. but thats another story.

[Mike90250]

Will be interesting to see if my wife even notices.

Ha, my wife is one of those with the 4th set of cones, and can tell the difference of blue paint from the AM, to PM, out of the same can. And there are not many candelabra base halogen bulbs on the market. I'm allowed 2 LED night lights, because the 7w incandescents burn out too often. 6 months, when she's in the dark from dead batteries, perhaps the tune will change.
Just found LEDtronics has a new LED color, 22000K "filament" - I'll have to try that one.

[john p]

22000k ?? I think but not certain and its possible im wrong but isnt 5500k "daylight" the desired colour temperature??

[Mike90250]

22000k ?? I think but not certain and its possible im wrong but isnt 5500k "daylight" the desired colour temperature??

It's a more orange color than warm white, better for indoor ambient. (better for "She Who Must Be Obeyed", 'cause if Mama ain't happy,nobodys' happy)

[john p]

Mike this is my point about this.. Your wife likes a certain type of lighting colour.. and thats that..
You could have someone do all the light calculations possible. and "prove" what is "correct" but I bet you still couldnt get her to chage her mind.

Thats why I say to anyone if possible try some lower power consumption LEDs in a room if you like the result thats fine, and now you will save some,but mabe not a lot of money.. You will if you have a dozen or two of the worlds worst light the 50w halogen MR16... Im sure those wasteful things were invented by a power company shareholder.

[fireofenergy]

Check out the Cree XML

Sunking, I read some of your posts to my dismay (because you alerted me about the dangers of DIY panels! Thanks!). Anyways, I would ONLY use the Cree XPG or XML because they are about twice as efficient as the CFL (and last longer if driven properly). I'm talking 12v systems (and I want even just 4 volts!). Each XML led mounted on a "star" costs about $9 to $11, then the driver, which I found at led supply (also) costs $20 but will power three XML's at 1.4A...
Which equates to about 1,500 lumens. In this case, I guess I would need at least a 10Ah 12v battery, the battery protection electronics, and a 45 watt panel, just to power this thing (brighter than a porchlight) on a regular (and not having to worry about it going dim in just a few hours) basis!
However, if a large solar/lead acid source was available, it seems that this would be the way to go, as it IS THEE most efficient (as far as I know)
Here's the specs for the Cree XML

http://www.cree.com/products/pdf/XLampXM-L.pdf

And, again, thanks for "being negative" about the DIY because I was thinking (and still wonder) about a totally plexiglass encased (8Amp and 4v) panel...

[Naptown]

I have frogs that bark

I have deer that bark at me.