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Question DetailsAsked on 4/27/2015

What is a non-dimming light bulb used for?

I have a lamp with a 3-way 'switch', also, I have a Touch lamp with '3-levels'. I prefer the Soft White energy-saving light bulbs, but I don't care for the 'new' "Daylight" bulbs. I'm having a hard time finding the right bulb. I'd like help in narrowing down my choices, however, I don't know what 'non-dimming' light bulbs mean. Thank you for your help.

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1 Answer


Non-dimming simply means they cannot be used with a dimmer (or certain types of automatic turn-on photocells like on porch/flood lights) - you are probably talking a CFL or LED bulb. Control elecronics inside the base of the bulb has to be different to work with dimmers - very few LED or CFL or flourescent bulbs come that way.

For a 3-way lamp (like table or floor lamp) with a regular 3-way switch - which turns or clicks through 3 or 4 (with off) different brightness settings or levels but does not have continuously variable output with a dial or slide setting on the switch, you just need a bulb rated as a 3-way bulb, in the wattage you want and with the top (brightest) wattage not exceeding the wattage rating of the lamp (usually on a sticker on the bottom of the lamp). And of course the "color" or "temperature" you like - Daylight, Bright White, Soft White, etc. Bulb will have wattage info on the package like maybe 40/75/150W on a regular incandescent bulb, or numbers maybe more like in the range of 13/20/25W for a CFL. CFL and LED bulbs should have, on the package/info, a rating of what equivalent incandescent bulb they replace - like a 13/20/25W CFL might say it replaces or gives equivalent amount of light as something like a 60/75/100W incandescent bulb. LED bulbs will be even lower wattage for equivalent light, but come in fewer "temperature" ranges and many brands are having trouble with quite short life compared to their ads - only brand I have found that appears to have a decent life (so far) is made by G7 Power out of Nevada - available from company and Amazon and other places.

Answered 5 years ago by LCD

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