Hoffman Amplifiers Tube Amplifier Forum
Amp Stuff => AmpTools/Tech Tips => Topic started by: dpm309 on January 14, 2014, 10:44:50 am
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I just realized that I am down to my last 2 incandescent light bulbs (60W and 100W) and due to the new Gov't. rules, you can't buy them anymore. Has anyone tried a CFL in a light limiter? Was just curious if they work or is there some other kind of bulb that will work. I believe that they still allow 3-way incandescent bulb sales, at least for now.
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IIRC, PRR has said you need a steel/tungsten filament.
I think you can use a halogen bulb?
Where are you at? I'm outside of Chgo. Il. and the big box stores are still full of 60 and 100w regular light bulbs. I was worried and bought a good couple dozen of each a couple years ago but their still on the shelves.
Brad :icon_biggrin:
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CFLs won't work right. There's a switching power supply in the base, you don't want that.
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I am in the Phoenix area and the last time I visited Home Depot, I could not find any but will keep looking. I might try a Halogen bulb side by side with an incandescent (I have 2 bulb limiters) to see if they do work.
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Hey, what do ya know, McMaster Carr sells light bulbs. Go to their on line catalogue and do a search for light bulbs, comes right up and style/shape you need.
Unless they aren't allowed to ship them to your state?
Brad :icon_biggrin:
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Do you have a Wall Mart?
I thought the law said a store could sell any stock that was bought before the law took effect?
Brad :icon_biggrin:
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There are some incandescent bulbs that meet the Big Brother standards:
http://www.newcandescent.com/ (http://www.newcandescent.com/)
I bought mine from here:
http://emory510.com/ (http://emory510.com/)
However, I have no idea if they are suitable for a lamp limiter. I bought mine to replace my LED bulbs, when they die. So far, they haven't lasted 7 years, as advertised. The Newcandescent bulbs claim to last this amount of time, but I'll have to prove that for myself.
Jack
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Halogen bulbs are OK - see the Weber Kit on this page: http://taweber.powweb.com/store/kits_weber.htm (http://taweber.powweb.com/store/kits_weber.htm)
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Halogens are fine.
150W bad-old incandescent is still available at home-supply places (too big for the house, good for garage, where the short runtime makes waste unimportant).
R- and PAR lamps are still available in simple incandescent and in halogen. These are handy because when your amp dead-shorts, they shine on the ceiling instead of in your eye.
Also: "specialty" bulbs are exempt. This includes the big "globe" bulbs 4" (25-40W) and 6" (60W)diameter. So far I have only seen this size in plain incandescent. (There is a 3" size of enclosed CFL, you don't want this for a limiter.)
The ultra-small tube halogens will work. These are often found in contractor work-lights. The default 500W size is far too big to protect an amp, but 150W replacement lamps are very cheap.
If worst comes to worst: a toaster or waffle-iron won't really slow the smoke out of the amplifier but will at least avoid starting a fire inside your walls.