Search results

Inventry
Gather App
Candle Power Forums

Help Support Candle Power:

  1. B

    Brightest LED headlights?

    Wow.. OK I give up :) seems like I don't know much about halogen lights.. so thanks for explaining
  2. B

    Brightest LED headlights?

    I understand they are probably illegal, however I have to say they're the most promising design I've seen yet. What's so special about halogen? As far as I know, it's simply the precise placement of the filament, and the small reflector right under the filament to point the light to the headlamp...
  3. B

    CREE about to break 300 lumens per watt in R&D?

    http://cree.com/News-and-Events/Cree-News/Press-Releases/2014/March/300LPW-LED-barrier I'm definitely suing these guys! They've blatantly copied my idea :D
  4. B

    CREE about to break 300 lumens per watt in R&D?

    Before you keep on reading, be warned that this is only about speculation and there are no hard facts here. If you're still here, consider this chart showing the history of R&D efficacy announcements: As you can see, historically, CREE have been announcing a new breakthrough about once a...
  5. B

    Refrigerator LED Bulb

    I wouldn't buy that one BlakeL because it seems a bit directional.. and also because most probably it's too big to fit
  6. B

    Refrigerator LED Bulb

    I have one similar to this in my refrigerator: http://www.ebay.co.uk/itm/E14-220V-5W-27-LED-SMD-5050-Pure-White-Screw-Corn-Light-Bulb-Lamp-/310537197307?pt=UK_Light_Bulbs&hash=item484d7596fb was concerned about condensation issues at first, but it's been working for almost 2 years now without...
  7. B

    Cree A19 9.5w 60w 800lm 2700K for $13.97

    it's great to see good LED bulbs getting lower in price.. now if only they get these to Europe which is currently lagging waaay behind in LED retrofits.
  8. B

    simple question with 3w leds

    emmanhello, the LED voltage varies depending on current, heat, etc. Some datasheets show how this varies. However, you don't need to worry much when using a driver. What happens really is that the LED sort of "decides" how much current to use depending on the voltage, however that doesn't mean...
  9. B

    simple question with 3w leds

    That driver you posted should be good for what you described and much better than using resistors. connect your LEDs in parallel and give them supply through the red and black wires that come out of the driver, and also solder 2 other wires to the "blank" side of the driver - one at the centre...
  10. B

    Round DRL LED lights

    Yes I've seen the Hella round DRL's and I really like what they have to offer.. but they're a bit too expensive... I'll think about it
  11. B

    Round DRL LED lights

    found more pictures here: http://www.banggood.com/Wholesale-2-X-Car-4-Led-Round-Drl-Daytime-Running-Day-Driving-Bulb-Kit-Fog-Light-Lamps-12v-p-48841.html
  12. B

    Round DRL LED lights

    I've been looking for round DRL lights that fit instead of fog lights. My plan is to install these in the currently empty fog lamp holes and add a control box to have them switch on automatically as stated by EU law. Anyway.. I've been looking around and found these on eBay...
  13. B

    Cree announces 276 lumens per watt!!! (okay just in a lab setting)

    I wouldn't hold my breath in expecting this within 18 months. As far as I can remember, production was always around 4 years behind R&D, and it will probably continue to be so. That's still good news however. With the current trend, we should be expecting to have LED's that exceed 200 lumens per...
  14. B

    Cree announces 276 lumens per watt!!! (okay just in a lab setting)

    Well I agree with you but I don't have that information at hand, although I'll try to collect it one day.. btw judging by the trends, production is around 3-4 years behind R&D, and R&D efficacy has doubled in the last ~5 years. For how long this can go on is anyone's guess. I believe the...
  15. B

    Cree announces 276 lumens per watt!!! (okay just in a lab setting)

    .. time for the usual R&D efficacy achievement chart
  16. B

    Source for reflow soldering

    you can try some places which have them ready such as led-tech.de and cutter.com.au
  17. B

    New LED technology being developed at Texas A&M directly produces white light

    maybe it just dies after 10 hours?
  18. B

    the future of extreme throw?

    Interesting development here: http://ledsmagazine.com/news/10/1/22 .. and they forgot to mention flashlights!
  19. B

    Layman's Terms: Efficacy vs. Efficiency...?

    I'm no expert (so correct me if I'm wrong), but I would summarise the difference as: Efficacy is the rating given in lumens per watt Efficiency is stated in percentage - based on the ratio of total energy in vs useful energy out - so if an LED is 30% efficient and it's consuming 30W, it's...
  20. B

    Easy way to change Cree 1w Led brightness?

    Hi Rimbaldo, welcome to CPF! Normally, you woudln't want to add a potentiometer to after a driver. Instead, I recommend buying a driver which has ha number of modes with varying brightness levels as used in most flashlights these days. I don't know of any multi-mode driver that is meant to be...

Latest posts

Back
Top