LED SMD 5050 Bulbs

Thanks Guys for all of your thoughts, much appreciated.
Morley

Will give a report on the 195 chips as soon as they arrive.

I've used 48 SMD's that were 1210's, not 5050's. Draws about .4 to .5 amps per panel. My light fixture uses two of these, and they draw 0.8 to 0.9 amps at around 12.6V per fixture, turned on.

Link

MEXICOWANDERER wrote:
"Yes, 48*5050 should be enough for reading. Those 12*5050 that you have, I only use where it doesn't matter - like in the kitchen hood"

Now, I wanna see you stuff that plate, into a scone.

This is why I brought up the subject of 190 L/watt

Ah, see, this is why I brought the subject of cobs :). Or replace scone with dome. Seriously though, I like the idea of 190L/watt - if it doesn't cost too much. Like audiobooks too.

"Yes, 48*5050 should be enough for reading. Those 12*5050 that you have, I only use where it doesn't matter - like in the kitchen hood"

Now, I wanna see you stuff that plate, into a scone.

This is why I brought up the subject of 190 L/watt

tenbear wrote:
Getting back to the original post, 12 5050 lights will not be very bright. If the 48 SMD lights are 48 5050 they will be substantially brighter. But, there is more involved than number and type of LEDs as landyacht mentioned.

IMHO your best bet is to buy a couple of the lights you think may be right and try them. Once you find what you like, buy enough to fill your needs.

Well sort of..

The 5730 LEDs that Landyaccht mentioned ARE substantially BRIGHTER AND quite a bit more energy efficient.

5050s are .22W LEDs (not quite 1/4W)with 12-15 lumens PER CHIP (equiv to 54-68 lumens per watt)

5730s are .5W LEDs (1/2W) 50-60 lumens PER CHIP (equiv to 100-120 lumens per watt).

So it only takes six 5730 LEDs to get the same light as a qty of 48 of the 5050s and at the same time using LESS power!

Can anybody just answer the OP question? :) Without going into 20 years of LED history?

Yes, 48*5050 should be enough for reading. Those 12*5050 that you have, I only use where it doesn't matter - like in the kitchen hood.

You might want to experiment with cob lights as well, they disperse the light at wider angle.

Getting back to the original post, 12 5050 lights will not be very bright. If the 48 SMD lights are 48 5050 they will be substantially brighter. But, there is more involved than number and type of LEDs as landyacht mentioned.

IMHO your best bet is to buy a couple of the lights you think may be right and try them. Once you find what you like, buy enough to fill your needs.

LED also have to run with some electronic board, what takes some power as well.
I installed main LED on my new house.
Now this is picture of part of the house, where balcony has incandescent bulbs and the rest is LED.
The point is that balcony single fixture takes about the same wattage what all other lights on the picture combined.
Expand the picture to see the difference.
I am fan of bright white, or 6000K btw

3 watts goes in

One watt worth of light

3 amps goes in

Two watts worth of light

Now. Where or where do those extra watts go?

Electromagnetic force? Microwaves? Spin a motor? Sound waves?

Energy just does not disappear. Three watts in - one watt worth of light.

Oh where oh where does it go?

The biggest obstacle with LED lighting is the chip versus heat sink area ratio.

This is why many lamp peddlers lie so bad about wattage and lumens. They use a 3-watt chip, then discover it needs a heatsink far in excess of what the boutique lamp body can handle. So they cut way way back on the driver current. Tah-Dah! A one watt lamp advertised as a three watt.

I've tried LED bulbs versus a standard 1156 in scone lamps. The incandescent bulbs were light years brighter than twenty dollar highly touted LED bulbs.

I don't flip on a light to get eye strain.

And I am not too crazy about spending 35 dollars for a heat sink and multiple fans for a 300 watt large area lamp.

The standard convection heat sink for a 10 watt high quality CREE or Bridgelux chip is ninety millimeters in diameter. Three inches and change. And an inch thick. And twelve dollars.

The 37-watt PAR LED floodlight in my kitchen weighs three pounds and some-odd ounces.

THAT is the reason greatly enhanced lumen output excites me, not merely energy usage.