ETERNALEDS 10W LED LIGHT BULB

Eternaleds 10W LED Light Bulb, retail $59.99 (www.eternaleds.com...)
Manufactured by Eternaleds (www.eternaleds.com)
Last updated 09-17-08




This is an LED spotlight bulb that uses ten 1-watt Semileds warm white LEDs, and is designed to be screwed into any E26/E27 medium screw base female light bulb receptacle. It is labelled to operate at voltages ranging from 85 volts to 260 volts AC (as indicated in the instructional materials furnished with the lamp).

It has a generous metal heatsink for the high-powered LEDs, so overheating of the LEDs should not be an issue here.


SIZE



To use this bulb, just find a place with an incandescent bulb in it that you'd like to replace. Unscrew the old bulb, and throw it onto a hard floor - love to hear those things pop!!! Or gently place it in a dresser drawer full of washrags, underwear, or other soft fuzzy things if you're averse to breaking light blubs.

Screw this bulb in the receptacle in its place...there, done with that, fun ya!!!
That was rediculously easy, wasn't it?



This is an LED light bulb, not a flashlight. So I won't throw it against the wall, stomp on it, try to drown it in the toylet bowl or the cistern, run over it, swing it against the concrete floor of an outdoor patio, use a medium claw hammer in order to bash it open to check it for candiosity, fire it from the cannoñata, drop it down the top of Mt. Erupto (I guess I've been watching the TV program "Viva Piñata" too much again - candiosity is usually checked with a laser-type device on a platform with a large readout (located at Piñata Central), with a handheld wand that Langston Lickatoad uses, or with a pack-of-cards-sized device that Fergy Fudgehog uses; the cannoñata (also located at Piñata Central) is only used to shoot piñatas to piñata parties away from picturesque Piñata Island, and Mt. Erupto is an active volcano on Piñata Island {In the episode "Les Saves the Day...Again", Paulie Preztail says "Hey, ever wonder why this park's called 'Mount Erupto' anyway?", then Franklin Fizzlybear says "I think its an old native term. Means 'very safe.'"}), send it to the Daystrom Institute for additional analysis, or inflict upon it punishments that flashlights may have inflicted upon them.

This is a loaner, so I would not have performed damaging or possibly even destructive tests on it anyway, regardless of what kind of product it was.

Handle it as you would an ordinary household light bulb, and it shouldn't give you any guff.

Since this is a light bulb with a set purpose, I don't have a whole lot more to say about it.

The base of this bulb is E26/E27 (26-27mm), which is the standard medium screw base that is used by household light blubs in the United States.

***VERY IMPORTANT!!!***
DO NOT under any circumstances use this bulb in a fixture equipped with a dimmer switch, whether the dimmer is in the fixture itself or on the wall controlling that fixture (usually a knob but sometimes lever-style like an ordinary switch). The bulb will overheat and fail if this is done. You don't want cockroach egg cases or mosquito wrigglers (larvae)...I mean...you don't want an unwanted fire.

The caution regarding using a dimmer is pretty much generic for any LED product powered by 110-130 volts AC; not just this bulb. Using this or any other 110-130 volts (or for that matter, 85-260 volts for viewers outside North America) AC LED product can result in overheating, failure, and possible fire because the AC waveform is altered by the circuitry in the dimmer, and AC line-powered LED products not using a step-down transformer tend to not do well with the altered AC waveform.

This bulb has a dedicated power supply in it, not just some resistors, capacitors (or "capacitators" as some people call them, or "condensers" that was the old fashioned term), and diodes; as I detect no flickering as the lamp is rapidly waved about while turned on. I tested it with an oscilloscope, and *DID* see only some very tiny amplitude pulses, but they were much too low in amplitude to be detectable to the eye. So, flicker-free? Yes, to the eye anyway.

This bulb is rated to output 500 lumens, though I am not equipped to measure light in "lumens" because you need a special (and expen$ive) instrument called an integrating sphere to do that, and I neither own nor have access to one.

After approximately 40 minutes of operation (operating base-down) at 119.4 volts, temperature of the metal heatsink ring around the outside of the bulb was measured at 137°F (58.3°C). So it's warm, but it is ***NOT*** hot. It's cooler than most CFLs and all incandescent household bulbs would be at 40 minutes. I used a noncontact infrared thermometer to measure this.

(Update 09-12-08): After taping a section of heatsink with Scotch® brand Magic™ tape (a matte finish tape) and operating the lamp base-down for *EXACTLY* 60 minutes (well, not *EXACTLY* down to the attosecond, but you get the idea - I started this at 9:02am PDT), the temperature was remeasured (on the taped area) at 150°F (65.6°C).

This bulb has a transparent, prismatic plastic diffuser over the LEDs; this diffuser not only widens & softens the beam, it protects the LEDs against things like prying fingers, screwdrivers, and very minor water splashes.



Beam photograph on the test target at 12".
Photograph intentionlly left uncropped so you can get at least a vague idea of the viewing angle.
The viewing angle is listed as 120°.
Measures 117,400mcd on a Meterman LM631 light meter.

This is a wide viewing angle source, and if I've told you once, I've told you 2,458,770 times:
Wider viewing angles always, always, ALWAYS equal lower mcd values.



Beam photograph on a wall at ~10 feet.

Those rectangular graphic things in the upper left quadrant of this photograph are marquees from:

Sega ''Star Trek''
Atari ''Tempest''
Venture Line ''Looping''
Jaleco ''Exerion''

upright coin-op arcade video games from the 1980s.


Spectrographic plot
Spectrographic analysis of the LEDs in this light bulb.


ProMetric analysis
Beam cross-sectional analysis.
Image made using the ProMetric System by Radiant Imaging.








TEST NOTES:
Test unit was sent to me by J.C. of Eternaleds on 09-05-08, and was received as a loaner on the morning of 09-09-08. Since the unit is a loaner that I'll have for no more than one or two days (as of 09-08-08), I'll soon be adding the dreadful "" icon next to its listings on this website, indicating that I no longer have the product available for additional testing & analyses.

Product was made in China.
A product's country of origin really does matter to some people, which is why I published it on this web page.

According to the packaging material, this lamp is RoHS compliant, which simply means that there is no mercury, lead, cadmium, or other heavy metals in it that could pollute the environment when this light bulb is eventually disposed of. Product is also CE listed; "CE" is the overseas equivalent of the UL (Underwriters Laboratories) in the United States.


UPDATE: 09-17-08
I have sent this product back to J.C. who was kind enough to loan it to me in the first place. Therefore, the dreadful "" icon has been added next to its listings on this website, indicating that I no longer have the product available for additional testing & analyses.


PROS:



CONS:



    MANUFACTURER: Eternaleds
    PRODUCT TYPE: LED spotlight bulb
    LAMP TYPE: 1-watt Semileds warm white LED
    No. OF LAMPS: 10
    BEAM TYPE: Wide flood w/very soft fall-off to perimeter
    SWITCH TYPE: N/A
    CASE MATERIAL: Plastic & metal
    BEZEL: Metal; LEDs protected by prismatic plastic diffuser
    BATTERY: N/A
    CURRENT CONSUMPTION: Unknown/unable to measure
    WATER RESISTANT: Very light splatter-resistance at maximum
    SUBMERSIBLE: No
    ACCESSORIES: None
    SIZE: 6.3" long, 3.1" diameter
    WARRANTY: 3 years

    PRODUCT RATING:

    Star Rating





Eternaleds 10W LED Light Bulb * www.eternaleds.com...






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