The above Ad will no longer appear after you Sign Up for Free!

FEL and FLK

Discussion in 'Lighting and Electrics' started by propmonkey, Dec 24, 2004.

  1. JD

    JD Well-Known Member

    Messages:
    3,968
    Likes Received:
    1,159
    Location:
    North Wales PA
    Shelf life... Interesting. I have a number of lamps left over from my days in the 1980s so they are over 35 years old. Mainly PARS, NSP, VNSP. They all seem to work fine. Even have an old box of FEL lamps. They work too.
     
  2. ship

    ship Senior Team Emeritus Premium Member

    Messages:
    6,126
    Likes Received:
    411
    Location:
    Illinois
    19.5+ years where I work and many lamps long pre-dating me. Have to inventory every year lamps. But more, I have heard or toyed with this filament sag idea or problem. One would think it possible or feasible a shelf life for filament lamps.
     
    RonHebbard likes this.
  3. DELO72

    DELO72 Well-Known Member

    Messages:
    399
    Likes Received:
    268
    Location:
    New Hampshire
    Shelf life of a lamp is typically based around the condition of the potting cement. Once the potting cement crumbles and dries out (8-15 years depending on humidity, environment of the storage area?), then the lamp capsule isn't supported well in the base and shouldn't be used. But the inside burner/capsule components typically don't go bad over time from lack of use, so really it's just the potting cement that "goes bad" in my experience.
     
    RonHebbard likes this.
  4. DELO72

    DELO72 Well-Known Member

    Messages:
    399
    Likes Received:
    268
    Location:
    New Hampshire
    I disagree on the GLA > GLC. If you buy a GLA you get a long life, dim lamp. If you buy a GLC you get a High Output, normal life lamp. AND-- if you run that GLC at ~90% intensity, you get a GLA. I'd rather have TWO options out of one lamp than only one option. :)
     
    FMEng and RonHebbard like this.

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice