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fluorescent lamps

Discussion in 'Electrical Engineering' started by Kilowatt, Jun 28, 2004.

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  1. Kilowatt

    Kilowatt Guest

    I know it is bad to put a fluorescent lamp in a dimmer socket.
    My question is will it shorten the life of a lamp to put a fluorescent bulb
    in a lamp with a 3 position switch?
    I suspect that it does because the one I have tried in a desk lamp's life
    seemed shorter.
    For the most part the lamp burned continually so I wasn't even using the
    switch.

    I know the lamps are designed to put 120 on one filament for part of the
    switch and 120 on both parts in the other position but I am not sure what
    is happening when you turn on a fluorescent lamp.
     
  2. SQLit

    SQLit Guest

    I would think when you lower the voltage to some point that the transformer
    in the CF will be stressed. As to how long this will take for a failure, I
    am unsure. Check the voltage requirements on the CF and see what they say.
    Some older CF's were 100% harmonic content. Probably means a switching power
    supply which might take a larger voltage spread.
     
  3. You can get retrofit compact fluorescents for the dimmer sockets
    (in the US -- I don't think these sockets exist anywhere else).
    These lamps are really two separate units.
     
  4. Paul

    Paul Guest

    Dimmable compact fluorescent replacements for A-lamps are also available and
    work quite well too
    http://www.buylighting.com/dimmable-compact-fluorescent-lightbulbs.htm
     
  5. Paul

    Paul Guest

    Sounds like he's referring to the type that uses an 1n1004 in series with
    the lamp in the "dim" position. The diode is inside the socket.
     
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