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LED's not flashing bright enough

Discussion in 'General Electronics Chat' started by Nabil7, Sep 6, 2017.

  1. Nabil7

    Nabil7 New Member

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    Hi Im new here.

    I just installed some LED indicator lights on my VW golf and they are nothing as bright the traditional filament bulbs that it had.

    The reason why i bought LED's is that they come on straight away and turn off straight away rather than a fading effect.

    Could someone tell me why this is, the it works but isnt bright at all. Im a newbie at electronics and no nothing, any advice would help.

    Thanks
     
  2. alec_t

    alec_t Well-Known Member Most Helpful Member

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    Welcome to ETO!
    A number of factors determine the apparent brightness of LEDs, including semiconductor die size, packaging colour/translucency, current, ambient lighting and emission directionality (beam angle).
     
  3. ci139

    ci139 Active Member

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  4. dave

    Dave New Member

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  5. Reloadron

    Reloadron Well-Known Member Most Helpful Member

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    This can actually come down the brand name. I am seeing LED lamps to replace a wide range of automotive lamps including for use on motorcycles. I recently replaced my brake and tail light, replacing a common 1157 lamp and the LED replacements I used were much brighter. Trips to the automotive store have revealed a wide range of lamps all using the same base connection as those they are designed to replace. My guess is much of how bright a replacement LED lamp is can depend on the brand name. The LEDs I have used on my bike are all Cree manufacture.

    Ron
     
  6. Nabil7

    Nabil7 New Member

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    Its the osram py21w led amber. Im guessing theyre a good brand because of the reviews and the price. Was about to go for the phillips but too expensive.
     
  7. Nabil7

    Nabil7 New Member

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  8. audioguru

    audioguru Well-Known Member Most Helpful Member

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    That is why it is illegal to tamper with lighting on vehicles in Canada. I have seen some too dim and too bright lights on cars before the cops caught them.

    Didn't you read the datasheet for the very expensive Osram py21w led amber bulb? It says they are designed for interior lighting and are not road legal for exterior lighting.
    It says that they use only 2W and says, "Only for off-road use. Not approved for use on public roads when used in an exterior application. Illegal use leads to cancellation of vehicle operating licence and loss of insurance cover".
     
  9. ci139

    ci139 Active Member

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    is your product backward trackable to it's original manufacturer
    did it came with any declaration of conformity
    did it came with any tech. spec manual provided by manufacturer
    does it have a warranty
    is the warranty activated/valid

    we can assume things here - or you can show us what you exactly have in hand / rise a law suit if it comes to such
     
  10. audioguru

    audioguru Well-Known Member Most Helpful Member

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    My son bought some cheap Chinese LED light bulbs for home use. They claim to be as bright as a 60W incandescent light bulb but they are obviously much dimmer.
    I am happy with the compact fluorescent light bulbs I bought about 15 years ago and have not tried LED bulbs for my home. But I have very many (too many) LED blinking and colors-changing things all over my home and yard, many are solar-powered.
     
  11. Nigel Goodwin

    Nigel Goodwin Super Moderator Most Helpful Member

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    The CCFL ones are absolutely crap - slow to come on, and really poor colouring.

    LED ones are massively better - I've replaced all my lighting with LED ones, using 10W LED to replace what used to be 60W incandescent originally, and were later 22W CCFL. The 10W LED bulbs are considerably brighter than either of the previous ones, and come on instantly at full brightness, plus give a much cleaner white light.
     
  12. ci139

    ci139 Active Member

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    it's not about LED-s being too dim
    it's also them being "too bright"
    i have bought [​IMG] 5pcs. 6pcs. of household flashlights as:
    1. was not working from the beginning
    2. are still operational
    3. -1 deceased soon after purchase (couple of months)
    so the 60% is junk by https://suite.endole.co.uk/insight/company/OC337288-komanda-technics-europe-llp
    the ones operational are good only they come with "hidden markup" of 1/.4 ≈ 250%(same as ®+150%) . . .
    _______________
    update
    1. was not working from the beginning
    2. deceased soon after purchase (couple of months)
    3. are still operational
    so it's 50%/50% = 200%(/$®+100%) "markup"

    . . . the PWM part works good only the LED´s (i assume!) internal wiring fails tested with spare LED so the case and the PCB remain GOOD! -- yet to figure out the use for
    ______________

    - which is no surprise coz we sold the dyto´s [​IMG] by carpoint and over 50% of these were returned to our wholesale store !!!
    =================
    ? don't by anything LED PWM ?
     
    Last edited: Sep 11, 2017

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