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Thread: Beginner's Guide to explain simple LED flashlight.

  1. #91

    Default Re: Beginner's Guide to explain simple LED flashlight.

    Excellent explanation-THANK YOU VERY MUCH for taking the time to put this together mate.

  2. #92

    Default Re: Beginner's Guide to explain simple LED flashlight

    What is the best way to tell what the quality is when it comes to the Lumins/ lens and inside components?

  3. #93
    Flashaholic* download's Avatar
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    Default Re: Beginner's Guide to explain simple LED flashlight.

    Good questions, 1tac

    The best way maybe test it by your hand, like
    1. run it at open field at night, you would see the actual output beam pattern,
    2. check the tail cap current of battery, you will know how much it draw from battery
    3. check the led current, to know exactly led current, so you can calculate the efficiency of the circuit.
    4. check the temperature around led and the flashlight body, is it good for heat management.

    Or read other member posts about the reviews.


  4. #94
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    Default Re: Beginner's Guide to explain simple LED flashlight.

    which type of material should be use in heat sink ?
    you have mention the material but not mention the grade of the material . like aluminium , extruded or die casting , material composition , some material has high heat tolerance power , some has less , so which grade would be better ?

    please suggest .

  5. #95
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    Default Re: Beginner's Guide to explain simple LED flashlight.

    cjs072, We will love to see if you could share you expertise here. After all this post is for general concept only.
    If you search inside cpf, you would find a lot of good post talking about it.

    Last edited by download; 01-03-2016 at 09:25 AM.

  6. #96

    Default Re: Beginner's Guide to explain simple LED flashlight.

    Wanted to thank you for putting this together, lots of great info.

  7. #97

    Question Re: Beginner's Guide to explain simple LED flashlight.

    Hi I am New and Have a Question about LEDs.
    I am sorry if this may have been answered before.

    I see a number of lights on the Market that are Tri LED or more. I know that in some applications such as needing Color Mixing this is a cool idea, much like The LEDS used in Custom Star Wars Sabers. How is it applied here and is it just preference?

  8. #98
    Flashaholic* download's Avatar
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    Default Re: Beginner's Guide to explain simple LED flashlight.

    I guess we just want to push it to the limit, try to make it as bright as possible in hand.
    Before, high power/low voltage small die led is not available yet, put a few more together is a alternative solution.

  9. #99

    Default Re: Beginner's Guide to explain simple LED flashlight.

    Thanks OP. This thread has helped me understand the basics. I thought I had a general idea prior to reading this, and boy was I wrong.

  10. #100
    Enlightened Slayer1's Avatar
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    Default Re: Beginner's Guide to explain simple LED flashlight.

    Good thread. Very informative.

    S1

  11. #101

    Red face Re: Beginner's Guide to explain simple LED flashlight.

    feel silly asking BUT I'm stumped! Was gifted a lux pro lp600 and I can NOT get the battery compartment open...have put pliers to it,but will not unscrew..............I have feeling that I am trying to unscrew it at the wrong place.., I can not tell where to unscrew.. holding the light base down where IS the division between the base and the bottom cap? There is a raised band with LP600 on it, counting from the very bottom, I count 4 "divisions' to that band and 1 directly above. All I have succeeded in doing is scratch the case with my vise grips...

    Please help and old geezer out
    thank you in advance
    brian

  12. #102
    Flashaholic* download's Avatar
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    Default Re: Beginner's Guide to explain simple LED flashlight.

    Brain,

    Take a look this link
    https://www.youtube.com/watch?v=dGhBm_DijU0

  13. #103

    Default Re: Beginner's Guide to explain simple LED flashlight.

    very useful!

  14. #104

    Default Re: Beginner's Guide to explain simple LED flashlight.

    Thank you so very much for the link..It wqs exactly what i needed. was able to get the light apart. There was heavy white build up on the end cap threads and on the wall of the case... but no corrosion on the internal components. did need to tap a socket thru the tube to take out the dents from the pliers.

    again thank you so much of the link.

    best regards
    brin

  15. #105
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    Default Re: Beginner's Guide to explain simple LED flashlight.

    Hi all,

    new to this forum and this is a great place to start. thanks for the info!

  16. #106

    Default Re: Beginner's Guide to explain simple LED flashlight.

    Good information here.
    Was just wondering if there are any websites / info or news on upcoming new Cree LED models and expected outputs that are coming to market etc ??

  17. #107
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    Default Re: Beginner's Guide to explain simple LED flashlight.

    Download, THANK YOU for this post and the drawings!
    I like many just got into LED lights by accident or curiosity in wanting something better than a Maglite.
    I thought I understood it all but I never really knew the "Basics". I teach at times and always push the basics in what ever field, so students can build there knowledge. I missed the basics with LED lights, until now!
    Thank you and the few who helped in the beginning of the thread (and throughout).

    Lateck,

  18. #108

    Default Re: Beginner's Guide to explain simple LED flashlight.

    Thank you for this. I have had a few Coast lights in the past and am looking into getting a Fenix. This post explains a few things I was curious about.

  19. #109

    Thumbs up Re: Beginner's Guide to explain simple LED flashlight.

    Thank you.
    I learn something from your post

  20. #110
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    Default Re: Beginner's Guide to explain simple LED flashlight.

    This is the thread and why I register here. I was searching a powerful led flashlight and this thread has all information that i wanted to know.

  21. #111

    Default Re: Beginner's Guide to explain simple LED flashlight.

    It is very good for beginners like me. Thank you!

  22. #112
    *Flashaholic* Offgridled's Avatar
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    Default Re: Beginner's Guide to explain simple LED flashlight.

    Quote Originally Posted by elidaesilva View Post
    This is the thread and why I register here. I was searching a powerful led flashlight and this thread has all information that i wanted to know.
    You've come to the right place . Welcome and enjoy CPF!!

  23. #113

    Default Re: Beginner's Guide to explain simple LED flashlight.

    Great information, very useful.
    What is the max lumen for handheld flashlights (if there exist a max)?

  24. #114

    Default Re: Beginner's Guide to explain simple LED flashlight.

    Thank you for the info, good information.

  25. #115

    Default Re: Beginner's Guide to explain simple LED flashlight.

    I realize that the Chip on Board (COB) leds are very similar in function to the "bulbs" but my problem has been with finding a way to use heat sinks on that long board.

    I wanted to bump up a COB light from 3watts to 5 watts but am worried about overheating and damaging the leds on board.

    Any suggestions are welcomb.

  26. #116

    Default Re: Beginner's Guide to explain simple LED flashlight.

    Great guide! Mind if I share it online?
    If you're looking for light First Lighting will make your life bright!

  27. #117
    Flashaholic* download's Avatar
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    Default Re: Beginner's Guide to explain simple LED flashlight.

    ceramicknife, should be better if install the bigger heat sinks at the back of the Chip on Board.

    firstlighting, no problem.


  28. #118
    Unenlightened ixix's Avatar
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    Default Re: Beginner's Guide to explain simple LED flashlight.

    Always easy to appreciate a simple diagram and clear explanation. Many thanks! Any chance you happen to have a diagram for LED driver design basics as well?

  29. #119
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    Default Re: Beginner's Guide to explain simple LED flashlight.

    Very good thread, did not knew this.
    Bought a flashlight last week, will help me when it brakes down.

  30. #120

    Default Re: Beginner's Guide to explain simple LED flashlight.

    Hello everyone,

    i am also a new user here and i have been wondering one thing. I dont know, is this the right place to ask, but i'll give it a shot! So i have couple of Olight flashlights and they have this turbo mode, which produces very high output and can be used for a few minutes, until it steps down because of heat. Does the turbo modes affect to the leds lifetime, or is it safe to use them? I can manage to come along with the regular low-med-high modes, if the turbo modes are not good for the led. Thank you for all the replies!

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