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1156 bulb versus CF bulb

Discussion in 'Home Power and Microgeneration' started by Tim Thomson, Jan 15, 2006.

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  1. Tim Thomson

    Tim Thomson Guest

    Does anyone know how much a 1156 12 volt auto buld draws?
    What would a 120 volt CF bulb draw on the 12 volt dc side of one of
    those cheap crappy tire inverters 75 watt and 400 watt. (rated at 9
    watts 120 vac)
    This is an RV project..........
     
  2. Steve Spence

    Steve Spence Guest

    Why not just pick up a 12vdc fluorescent from home depot for $11. 6
    Watts and a lot of light.
     
  3. Steve Spence

    Steve Spence Guest

    not true. I use these lights daily. The only one I lost was the one
    dropped on the floor when it was being used as a flashlight.
    look at the lumens per watt. They are 4x as efficient as incandescents.
     
  4. JoeSP

    JoeSP Guest

    The 1156 incandescent draws about 2.1 amps at 12.8V =27W, and provides about
    400 lumens for an efficiency of 15 lumens per watt.

    An F8T5/CW Fluorescent draws about 0.8 amps at 12.8V =10.2W, and provides
    about 400 lumens for an efficiency of 39 lumens per watt. That's over twice
    the efficiency of incandescents.

    Those inverters generally claim an efficiency of about 75-90%. Check to see
    if the inverter draws current when it's not under load. That should still
    save you a good deal of power in the long-run over an 1156 bulb.

    I have installed some 15W 110V fluorescent strip lights on the ceiling and
    walls of my RV, plugging them into small 75W inverters, and they seem to
    work quite well, but they don't start as easily, and buzz more loudly than
    when running on regular AC.

    I'm still waiting for good and affordable white LEDs. At present, they are
    very expensive, not much more efficient than incandescents, and the harsh
    violet-white light isn't particularly easy on the eyes.
     
  5. wmbjk

    wmbjk Guest

    (regarding solar fla_i_re)
    Same old pattern. Once each name gets in enough kill filters he
    changes it. In the energy groups alone he's already gone through
    several variations of both Gymmy Bob and John P Bengi. He uses so many
    names that he's frequently confused, and sometimes you'll see him
    using two different names in the same thread. Even when he changes
    names completely though he's pretty easy to spot. He can't go more
    than a week or so without using profanity, accusing someone of being a
    troll, rambling incoherently, or complaining about bottom posters.
    Naw, more like Ernest P. Worrel.

    Wayne
     
  6. Mr Wizzard

    Mr Wizzard Guest


    Dude! where have you been? - they have 12-volt CF's now.
    (and they rock!) They draw about an Amp on 12 volts, and
    can light a whole room damn near. If you want/need info on
    then, let me know. I got them on line. Also made a slew of
    of camp lights out of come dowel rod, regular lamp sockets,
    and 12-volt 7.2 Amp hour batterys on their side (and hot glue)
     
  7. Tim Thomson

    Tim Thomson Guest

    Why would I when for 2.50 cad I can buy a 120 volt CF? Besides I allready
    have a couple of the el cheapo inverters and besdides my Home Depot
    doesnt stock the 12 volt ones.
     
  8. Tim Thomson

    Tim Thomson Guest

    Are you talking to me????? I am the same guy as my name!
     
  9. Tim Thomson

    Tim Thomson Guest

    I do not need more light than what my four 12 volt 1156 bulbs are giving
    me......I did install one of those double mini tube flouresent......(good
    quality unit).............but I was not to happy to find out that it draws
    allmost the same as one 12 volt 1156 bulb. I want the same amount of light with
    less draw I will go 12 volt Cf if I have too.
    I would check the draw with my clamp myself with the inverter and the CF but I
    am a thousand kms from home stuck in a hotel right now. Where I live I have to
    travel 400 kms to get a deal on a CF bulb. I have access to buy the ultra mina
    right now at a good price. These ultra minis by Noma claim 120 9w = 40w 500
    lumens 6000 hr's at 3.50 cdn. BTW I picked up 6 of the CF Black lights for 6.00
    cdn a piece. They put out pretty good as far as black light goes. They get a
    little hotter than the white ones but not near as hot as the incadescent black
    light used to..........I banned my kids from using those ones.....dam fire
    hazard they were. They also have a CF bug light lol.
     
  10. Tim Thomson

    Tim Thomson Guest

    What is a "ccfl" ?
     
  11. Tim Thomson

    Tim Thomson Guest

    WHAT EVER............There still ten times the price HA HA HA and did you
    see how much they want for one of those lanterns with a CF and lol the
    batts they take cost more than the lamp.
     
  12. wmbjk

    wmbjk Guest

    No, I was referring to Solar Flaire. AKA Solar Flare, John P Bengi,
    Gymmy Bob, etc. etc. Although IIRC Gymmy has used a Shaw address
    sometimes.... OK, I got my eye on you now. :)

    Wayne
     
  13. Steve Spence

    Steve Spence Guest

    No, he wasn't talking about you.
     
  14. Steve Spence

    Steve Spence Guest

    Cold Cathode Fluorescent Light, commonly found in lcd backlights.
     
  15. Steve Spence

    Steve Spence Guest

    $11 bucks at Home Depot, they take 8 AA's or a 12vdc plugin.
     
  16. Steve Spence

    Steve Spence Guest

    6 watts according to my KAW .....
     
  17. Steve Spence

    Steve Spence Guest

  18. JoeSP

    JoeSP Guest

    It's not 400 lumens per watt. Both produce 400 Lumens (brightness)
    Incandescent = 15 Lumens per watt. (less efficient)
    Fluorescent = 39 lumens per watt. (more efficient)
     
  19. Mr Wizzard

    Mr Wizzard Guest

    $12 for a 13W 12-volt CF that draws .86 Amps @12v is bad ?
    hummm. Better go back and rethink this I guess.
    No idea what this is. I'm a DIY guy, hot glue gun, hobby battery's,
    12-v CF's, old lamp sockets, miniture decoverative lamp shade...
     
  20. Mr Wizzard

    Mr Wizzard Guest

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