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Dead Compact Fluorescent Examination

Discussion in 'Electronic Design' started by D from BC, Apr 16, 2007.

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  1. I had only one screwbase CFL in the kitchen..

    What?? I can't trash my CFL!
    Where's that Philips 1-800 number...They can come over and pick up
    their toxic waste. :p
    What am I going to do? Drive my car and pollute the air so I can
    deliver my single CFL to a disposal plant.[/QUOTE]

    If you want to give them apoplexy, just run it down the garbage
    disposal. ;-)

    Cheers!
    Rich
     
  2. D from BC

    D from BC Guest

    Thats what I was thinking..
    Every little "psst" noise means a little bit of contact metal is
    vaporized and oxidized.
    If I had the time...I'd take apart the wall switch and check out how
    the contacts mate and see how much contact damage exists.
    But, I'm not too concerned.. Wall switches are cheap.
    Plus...
    Phil says the switch will be ok.
    Also...I'm sure the CFL designers have thought about this.
    D from BC
     
  3. Eeyore

    Eeyore Guest

    No such thing.

    Get your facts right first please.

    Graham
     
  4. Eeyore

    Eeyore Guest

    I've had *ZERO* problems with quality name branded CFLs. I can currently buy
    them (Philips) in 11W and 18W for the equivalent of $0.99 !

    There are none, at least at prices you could afford.

    Graham
     
  5. Eeyore

    Eeyore Guest

    Well..... if you insist on buying CRAP !

    Have you considered buying a Philips or Osram CFL ?

    Graham
     
  6. Eeyore

    Eeyore Guest

    They have better pulse handling capability.

    Graham
     
  7. I know Color Kinetics is making them, but they're not exactly at the
    hardware store level. Not really economical for home use yet.
     
  8. Robert Baer

    Robert Baer Guest

    Of course the CFL makers thought of that...they make the light
    swithces also...
     
  9. Robert Baer

    Robert Baer Guest

    Look it up..cadmium, mercury, lead are some of the banned items.
     
  10. Eeyore

    Eeyore Guest

    They are not *banned*. What do you think car batteries use for example ? They
    are allowed where no adequate replacement exists.

    There is absolutely no ban here on incandescent light bulbs either. Where on
    earth do you get your ideas from ? Marvel Comic ?

    Graham
     
  11. Rich Grise

    Rich Grise Guest

    Almost! ;-) California, in fact:
    This link will probably wrap, so you'll have to reconstitute it in your
    browser's address window:
    http://today.reuters.com/news/artic...ERGY-CALIFORNIA-LIGHTBULBS.xml&src=rss&rpc=22

    Cheers!
    Rich
     
  12. Eeyore

    Eeyore Guest

    It's daft. Incandescent bulbs have entirely valid uses. The best way to encourage use of CFLs would be to tax incandescents @ 400% or so, not drive them underground.

    Graham
     
  13. Guest

    I have a collection of burnt out CFLs waiting for suitable e-waste
    collection. The ones in the master bath made it about 18 months. I've
    gone back to light bulbs again.

    It is well known that the lifetime of fluorescent lights is related to
    how often they are turned on and off. I worked in a old office
    building where there were no light switches for the fluorescent lights
    in order to maximize the life of the bulbs.

    I have one FL that lasted for years. It was a very low wattage one I
    left on over the sink. After Kenny Boy Lay screwed California, I
    started to switch it on and off and yeah, it croaked.

    Somewhat on subject, my halogen torchieres are now object d'art at
    300W a pop in the post Enron era.
     
  14. Eeyore

    Eeyore Guest

    With old-fashioned electro-mechanical 'starters' no doubt.

    Electronic CFLs simply don't have such a problem.

    Mine survive just fine being switched on and off. They may *exceed* their stated
    life when rarely cycled perhaps.

    Have you used any good quality CFLs like Philips or Osram ?

    Graham
     
  15. D from BC

    D from BC Guest

    IIRC incandescents are also "tortured" by (on/off)ing. Filament
    thermal differential stress?
    Anyways..
    Long ago ..maybe in a magazine..I saw a zero crossing switching
    project for incandescents.. The idea is that the beginning the power
    sine wave was a soft enough start to prevent thermal shock to the
    filament.. So no "pop" if someone flicks the switch right on the
    voltage peak.
    I've noticed many times that incandescents blow upon turn on..

    Could such a circuit help extend the life of a CFL too?
    If so..why isn't this cct built into the CFL...
    D from BC
     
  16. Eeyore

    Eeyore Guest

    The simplest answer is to use an NTC thermistor in series.

    Cost of course.

    Graham
     
  17. Phil Allison

    Phil Allison Guest

    "Eeysore ASD fucked criminal IDIOT "

    ** Nonsense.

    Makers specify the max number of on/off cycles to achieve rated life.

    Gets included in the various quality standards too.



    ........ Phil
     
  18. D from BC

    D from BC Guest

    Interesting...
    Perhaps the NTC could go in the wall switch electrical box or the
    ceiling electrical box..
    If it was put in the CFL base..it might just be another heat source
    shortening the electrolytic lifetimes..
    (IIRC NTC's applied like this stabilize at around 100C.)
    D from BC
     
  19. Robert Baer

    Robert Baer Guest

    I understand that Australia is doing that insanity..
    Lead in car batteries is one of the few exceptions.
     
  20. Robert Baer

    Robert Baer Guest

    The problem is, that CFLs take *more* total energy (a pixie does not
    magik them up) !plus! they use (shhh... do not tell anyone) mercury, a
    known and deadly poison.
    Some people have theeir backside and head interchanged.
     
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