Peak High Power

[mitchfried]

Did Peak come out with a separate High Power range for their lights, or am I reading the website wrong? If they did, what's the difference in output?

 

[BentHeadTX]

I ordered a 5 red LED AA high power myself, they tell you the increase at their website.
My question is how did they increase the candlepower? Overdrive the LEDs or use more effecient LEDs? Hopefully, the latter.

 

[NewBie]

Don't worry BentHeadTX, your ARCs are hardcore overdriven.

 

[BentHeadTX]

Newbie,
Yes, my Arc AAAs are overdriven... quite hard I must say. This is fine though, after a few years they should have 5mm LEDs that will outpower the Arc using less than a third of the power.
Just wondering about the high power Peaks... I bet they use different LEDs as the price went up for that option. That would be absolutely fine by me!
The brass light should be really cool to play around with AFTER it's primary purpose is complete. The little guy will be lighting my way in blackout conditions for four months this fall. Once it lives through that, it's life will be easy... mostly a conversation piece as red light is something I generally don't use.
At least with brass, it will be a conversation piece. I should have it in 37 hours from now...

 

[Al]

Would be interested in comparison between Peak stnd. & hi-power white light of any size. Peak LED's are noticably cooler (bluer) than some other "white" lights and if overdriven using the same LED's, will they be even more to the blue end of the spectrum?

 

[idleprocess]

I would speculate that their "high-power" products are simply overdriven.

 

[LEDMANIA]

Or they might be using the newer 5mm leds by ISP using larger chips..

 

[INRETECH]

If you look closely, at the ISP LEDs - you will see 4 bond wires going from the lead into the Phosphor; I suspect they are just using 4 LED dies in the cup

Using this package, there still isn't a way to properly pull the heat out of the package - since the bottom of the LED dies are bonded to just one very small wire; and plastic just is not a very good conductor of heat

 

[rdshores]

The new 150ma half watt is a single die. The one you mention is the earlier four die one. There are data sheets on the ISP site. I have some of the two die 5mm LEDs, but I'm waiting for the lastest high power 5mm ones.

 

[TrevorNasko]

Arcs are not overdriven.

 

[Eric_M]

[ QUOTE ]
TrevorNasko said:
Arcs are not overdriven.

[/ QUOTE ]

From the "Arc FAQ" section:

LED types

The Arc-AAA use a 5mm Nichia LED part number NSPW500BS. Like all good LEDs, Nichia bins these LEDs by tint and flux. The Standard Arc-AAA uses a R or S flux and B2 or B3 tint. The Premium Arc-AAA uses a S flux with a B2 or B1 tint. The difference between the Standard and Premium is the Premium will have a warmer tint. All white LEDs tend to have a blue center and the Premiums are no exception. The difference is the Premiums will have less blue than the standards. The S flux is rated at 6400mcd at the factory but we overdrive the LED at approximately 45mA to produce about 20,000mcd.



Eric

 

[Kiessling]

The only Arc that is NOT overdriven is the LS ... and the RGB /ubbthreads/images/graemlins/smile.gif

 

[The_LED_Museum]

I was going to say the Arc AAA drives its LED at 45mA, but I see I got beaten to it. /ubbthreads/images/graemlins/wink.gif

 

[idleprocess]

If it's a typical 3/5mm commodity LED, and it's substantially brighter than any other similar LED, it's overdriven.

 

[NewBie]

[ QUOTE ]
TrevorNasko said:
Arcs are not overdriven.

[/ QUOTE ]

As you can see, the ARCs are most definitely overdriven.

Anyone do a continous output over time on the ARC AA/AAA yet?