Unless you have a 3-way LED bulb (and a fast search indicates that lock don"t exist yet), it will light, yet at the brightest light level.

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A three-way glow light has actually two filaments: dim and medium. Every filament has actually a separate contact on the bulb"s base. The brightest irradiate level is provided by energizing both simultaneously. Once energized, every filament is pushed at the mains voltage, so using that voltage come a standard LED bulb will cause it to produce its rated irradiate output.

You"ll probably uncover that (because the bulb"s base is missing a contact), you"ll have an "on, off, on, off" pattern as you rotate the switch, instead of "dim, medium, bright, off" favor with a 3-way bulb.


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edited may 16 "11 at 19:46
answered might 16 "11 at 19:39
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Niall C.♦Niall C.
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3 method LED bulbs ultimately do exist now: http://store.earthled.com/products/switch-switch3-way-led-light-bulb


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reply Mar 20 "13 in ~ 15:56
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JamesJames
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I to be terribly i m really sorry to contradict 2 others replying come this question, but I great to set the document straight ~ above what may be a misunderstanding that the original question.

The inquiry is not around a 3-contact socket which need a 3-contact bulb (with two separate filaments).

The manufacturer"s statement: "For glow bulbs only" or "Not because that compact florescent bulbs" walk not median that you should avoid LED bulbs. That statement might simply median that the manufacturer failed to account more recent LED bulbs...

A 3 means touch switch works by supplying a diminished brightness level, yet it supplies a typical 1-brightness bulb. It achieves the cut-back in illumination by either reducing the voltage or "chopping" the wave form (this is much more typical). One an extremely cheap an approach of dimming a single brightness bulb is to just skip every various other 1/2 wave, together if a diode were put in series. But this can produce noticeable flicker and also can likewise cause compact florescent bulbs come overheat.

But come the point: The initial writer asks if one deserve to place an LED bulb right into a desk lamp that has a 3-way touch control. The answer is: "It depends!...You should test it!" here is the reason...

First, LED lamps are typically significant dimmable or not dimmable. Together of 2014, most screw in replacements native the major brands (CREE, GE, Philips) are dimmable, if they room "equivalent 100 watts" or less. However, they call for a dimmer 보다 chops the leading or rolling edge that the waveform. Together an example, they call for a much more expensive wall switch dimmer 보다 the traditional incandescent dimmer ($20 as opposed come $10 for a similar model). So component 1 of my answer is come use just an LED bulb the is marked "dimmable".

But part 2 is trickier...

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If friend purchased a lamp that claims to usage incandescent only, you must test it through your LED lamp. In mine Hampton Bay design 494 595 upright accent lamp, one brand of LED bulb shines only at full brightness, yet produces an stroked nerves hum at the dim step. But another LED bulb works simply right, at half and complete brightness. Ns would point out the bulb model, however they room store brands, and also Home Depot is well-known for switching companies or MFG series without transforming the SKU or model number. Therefore, this details would certainly be short-lived.

The bottom line, is the (a) the is likely that the touch-dimming circuit is compatible with countless LED bulbs, and also (b) You should still test the bulb to check out if the dims. If it does (and if the does no make noise), that is an extremely likely the the electronic devices in the pear "realize" the a dimming circuit is gift used, and so the bulb is cooperating by doing the dimming in ~ its own circuitry. Therefore, you must be fine!