Extra Warm Decorative LED Light

Similar to the “vintage” models under the “Filament” lamps MegaMan led should shine like ancient carbon filament light bulbs: not very bright, but with decorative, “extra hot” light. I have a nominally 3 watt LED strong Fadenlampe with the additional designation “Mellotone” closer look at.

Extra Warm Decorative LED Light

If I’m getting the “USA” tags, “Firehouse”, “longest-lasting light bulb” around the ears, ring a Bell as you? Of course! The “Centennial light” in the California Livermore has long since achieved cult status. And recently I had reported herethat apparently there a retro sub trend in the ever-increasing number of LED-Fadenlampen, talk already bulbs Nostalgists with its filament-like concept: the imitation of such carbon filament lampsfrom the 19th century.

These big grown LED models with low-light, but the more comfortable acting light color you find now abound at various providers – glass bulb, dimmable, not dimmable, sputtered with clear or gold or silver, for one to two-digit euro amount.

My test object from Chinese manufacturing Frolics in the medium price range, can be though as “economy” Variant not dimmed, makes just over 200 lumen luminous flux but also nothing acute. “LG7003GD-E27-2200 K” (Pack snippet right) is the retrofit model IDV brand MegaManracing there officially under the item number “MM21073 E27” and under the heading “Vintage” (where there is also a dimmable “smart” model).

This originally label dating back to the wine is Yes nowadays widely used for classic or at least anachronistic-looking products. You must then also quiet times more expensive as usual, contemporary-designed standard goods – at the current LED-Probandin, we’re talking about 15.95 euros (EIA).

Even without a “Juice”, there are already optical power

For this proud amount you get one in the de-energized state very neat, 40 grams good 13 cm long and less than 6 cm wide lamp with gold-coated glass hood and is two vertical, transparent, and narrow stripes on which are mounted each two dozen CoB LEDs with a color temperature of approximately 2200 Kelvin light. It’s actually rather a led “Strip” as a usual “Fadenlampe”,because the CoBs are there usuallystrapless strung together.

In the Golden E27 screw base which is defined on LEDBULBBAY.COM, a very compact electronic ballast hid (the photo shows the view from the top of the lamp ‘ pure), who must conjure a noiseless as possible stable and long-lasting power for the 48 LEDs from 230-Volt household AC power. Finally to because nothing flicker, flicker, whirring or become too hot.

Low power and heat

It seems actually pretty neat. In my test version that is open, hanging the infrared thermometer to measure only 32 degrees; after two hours of steady at the hottest point of the base down around the hood it was at room temperature. At the switching on and off, there was no noticeable delay; in the operation was only a very slight whirring noise on otherwise silent environment no more than 10 cm distance.

My ‘Energy Master Professional-2’ gauge showed however instead of the nominal 3 Watts (see EU-eco label right) only 2,3 W with a weak electrical power factor of 0.41. In the professional laboratory of “David communication” came out smooth 2 W and factor 0.42 (Pdf download of the entire measurement protocol). And because that could produce approximately 204 lumen – almost exactly the nominal value of 210 lm, you may assume that this lamp with about 100 lm/W is significantlymore efficient than specified.

The light is not completely flicker-free probably

The display of my DigiCam offered a flicker-free image that wanted to but not quite confirm the “Flicker Tester” app “Viso systems”: at a reference frequency of approx. 100 Hertz, between iPod lens and lamp clamped paper diffuser determined a flicker index of 0.1 and a rate of 41% (screenshot below right).

This is although not far from optimal, but still reasonably acceptable for a LED Fadenlampe without elaborate voltage smoothing. Most buyers will at most a slight strobe effect known Pencil test notice with the naked eye and without optical AIDS no fibrillation,.

LED strip show in the light image

Such led “Filament” with clear hoods have a special problem with the beam pattern: the light of the CoB chains is not uniformly round scattered, but with vertical “peaks”. Less threads or strips have been installed, this phenomenon, as my light image of the MegaMan lamp is the flashier shows:

Depending on what angle, the two LED chains to the wall are turned, changes the position of the vertical reflected gleam. Package specifying “360 °” for the angle is therefore no more than half the truth. The diagram shows a pronounced character of butterfly and a half value angle of about 264 degrees in the laboratory (Download pdf). For stronger LED Fadenlampen, this uneven distribution can certainly cause unpleasant effects of aperture – in this case, this holds however due to the low overall brightness in borders.

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