Overclocked
Member
audioguru said:What do Brits call H2O?
Woe-tahh!
We call it water.
DiHydrogen mono Oxide.
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audioguru said:What do Brits call H2O?
Woe-tahh!
We call it water.
No it's my attempt at spelling water how it sounds.audioguru said:Is "worter" Cockney?
fingers said:1500mA - no way! Not sure which datasheet you're looking at. 350mA at 2.79V (the minimum voltage specified) is the absolute maximum that you'd want to run it at. The 1W rating is the current x voltage. This is the datasheet for your LED **broken link removed** . It looks to be the lambertain.
I did a test at work to test how well different thermally conducting compounds work. At the end I cranked up the current in stages see how much current these LEDs can draw before blowing up. Around 800mA for a few seconds.
Audioguru - its a torch! The flash light flashes no more than a ceiling light. (Do you call ceilings something different over there too?)
fingers said:logto - https://www.lumileds.com/pdfs/DS51.pdf
K2 is the name of the LED and star is the shape of the PCB which it is attached to.
Overclocked - I haven't thoroughly read the datasheet before <41 pages!> - see what you mean. 1500mA is a serious amount of current! Is the heatsink a portable air-con unit? We only ever use them up to 350mA, seems like a waste!
logto said:do someone know AMC7150 this IC which is used for drive LEDs
justDIY said:pulsing 'next gen' leds doesn't yield any more brightness, perceived or average. the best way to get more light from most power leds is to lower the junction temperature. if you can keep the junction at 25C or less, you can keep upping the current until the internal bond structure can't take it anymore.
on the other hand, some new leds produce more light at higher temperatures, but you sacrifice longevity for brightness. The luxeon rebel works like this. you can run them at 350ma for years and years, or run them at 700+ma for months, at nearly double the brightness. The luxeon PWT is an even more extreme example of this. The pwt is rated to last a mere 2000 hrs, but cranks out 26 lumens from roughly a 0805 package