Have used LED light few years, are common 1...2...3 watt ones.
Now I decided to try power leds, 10 ... 20 ... 50W.
First I bought three 10W LED project light from ebay.de - yeah, so-so, not bad, but also nothing distinguished. I hoped to get something good lights for my machines and for myself when some kind precision works are going on, but these 10W lamps are not as good as hoped.
Then I found from ebay.com 50W power led with driver, price was $0.98 and I did bid ...... and in the morning I saw I got it for the same money Of course for shipping was needed to pay $25 but this is very OK for me anyway. It did come from HK and received today and already tested. Also I bought few 20W LEDs from other seller ...
Yes, this 50w is very bright! but ... Im bit disappointed ... why it comes so hot?
LED I installed on to PC processor cooling radiator 80mm x 60mm x 40mm, nonetheless in five minutes it goes to 50 C degrees and it looks like in follows minutes even 60 C degrees and up ... sorry, but ... exact whet I need it - my laser thermometer batteries died up
Yes, I have read about temperature before but also I did believe this is without large cooling radiator.
Lens Color: Water Clear
Emitted Color : White
DC Forward Voltage (VF): 30~35Vdc
DC Forward Current (IF): 1500mA
Viewing Angle: 140 Degree
Color Temperature: 6000~7000K
Intensity Luminous (Iv): 3500~4000LM
Driver Quantity: 1pc
Input Voltage: AC 100V-240V 50/60Hz
Output Voltage: 30V-35V
Operating Temperature: -20~80
Storage Temperature: -20~80
What is LED efficiency ?
My fresh experience speaks that this efficiency is not so great at all,
50W power LED comes as hot as 50W car halogen light
At that much more easy to operate with common glow lamps, and cheaper ...
Anyone has experience?
Any comments please,