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panicmechanic said:
Because each puts out ~ 350mA, so you get 700 out of two.
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huh, it has to be at least a luxeon III, but I haven't came across an application that requires a single LED and a very high intensity red that would require an integrated point of load conversion device for what I'm guessing a supply voltage thats lower than the LED's foward voltage:candle:

Interesting, the hotter the chips go the more unstable they become, so at minimum I'd expect a warning label not to run these without heatsinks
 
there's no problem having a 95% and up efficiency switching regulator on the same board with LED. The regulator components dissipate less that 5% of the total power which can't affect the LED thermal conditions. On the other hand all-in-one design usually provides better layout for high switching frequencies which increases the efficiency and reduces EMI. And simplifies the LED thermal control if needed.

Having linear regulators to drive high-current LEDs is a stupid idea. Regardless how close it's to the LED.
 
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You have some very interesting and nice items on your website luxrc. 95% is good, but I have read about 98% before (a few years ago to tell the truth). Should be your next goal. :D :devil: :poke:
 
CampingLED said:
You have some very interesting and nice items on your website luxrc. 95% is good, but I have read about 98% before (a few years ago to tell the truth). Should be your next goal. :D :devil: :poke:
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I must be an ignorant as I have found XP-G in stock just 3 months ago. :thinking:

And it took quite a while to design/debug new engines.
I still try to move as fast as I can.
Thanks.
 
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Re: All New Datasheets (240, 350, and 1100 lumens)

The first graph in each datasheet should probably be labelled "input current", not just "current".
Is the quiescent current for the 3x XP-G board really just under 1 A at 9.5 V? That would be a big disincentive to turning it off, because the current draw when it's on at 9.5 V is just over 1 A.
What is "Mode control fiction" in Note 1 of the 3xXP-G datasheet? ;) (Should be "function" I think.)

What's cost and shipping going to be?
 
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Re: All New Datasheets (240, 350, and 1100 lumens)

TorchBoy said:
The first graph in each datasheet should probably be labelled "input current", not just "current".
What is "Mode control fiction" in Note 1 of the 3xXP-G datasheet? ;) (Should be "function" I think.)
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many thanks, fixed!

TorchBoy said:
Is the quiescent current for the 3x XP-G board really just under 1 A at 9.5 V? That would be a big disincentive to turning it off, because the current draw when it's on at 9.5 V is just over 1 A.
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it simply means that the boost driver has no cut-off switch, so you should not expect the software sleep function to work well in all voltage range. I have added additional info and updates the links, please check. The most likely I'll disable sleep mode in the firmware. So it will be possible to dim the light, but for complete off it should be phisically disconnected from the supply.

TorchBoy said:
What's cost and shipping going to be?
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there's an option for USPS air mail, it's about $10 for EU countries and $15 for US. The product cost depends on the exact product. Normally we take a fixed fee for EE, assembly and testing (about $10-$15 per unit) + components cost which may be checked at digikey.
 
Re: All New Datasheets (240, 350, and 1100 lumens)

Surely you'll be offering them in standard configurations? And for better or worse I'm not in the EU or US. :party: My only other comment at this stage is that I don't like the very narrow text used in some parts of the datasheet. Maybe it's just my personal preference, but I find it hard to read.

They look like really interesting products, and it's great to see such small and complete driver/LED solutions (almost) on offer.
 
hmmm, is it me or has the thread been officially hijacked?:thinking:

Lets get back on topic shall we?
They are not that uncommon, there are similar LEDs like the one docb posted, just have to use multiple google searches, it sucks that google sets its query limit at 32, meaning at max you can only weed out 31 keywords per search so multiple search fields are necessary.
Heres a white one for example
160qydd.jpg

here's the source for that: http://www.lck-led.com/p659/3W-Star...iver---140LM,-SemiLED-Chips/product_info.html

A blue one, any self respecting technician should be embarassed to see this as a selling picture :shakehead:
33ffbk2.jpg

Info here: http://www.lightobject.com/%2F3Watt-Ultra-Bright-Blue-LED-w-Driver-P94.aspx

Another White one
2u8lcau.jpg

Info here: http://www.lightobject.com/3Watt-Ultra-Bright-White-LED-w-Driver-P93.aspx
 
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luxrc, you may want to consider starting your own thread - please feel free. Your posts are interesting, but you are straying a little away from the OP's topic.
 
DM51 said:
luxrc, you may want to consider starting your own thread - please feel free. Your posts are interesting, but you are straying a little away from the OP's topic.
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thanks DM51, I'll start a new thread as soon as I'll get new photos and do some progress with the LED remote control idea.
 
thought I'd update this thread, for those wondering about the circuit, its really no different than the other AMC7135 boards out there:thinking:

978e55.jpg
 
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