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Superbright LED dimmable "fingers" X-Flash TC

The maximum power of incandescent lamps with a minion base E14 is 60 W (a luminous flux of about 600 Lm).

Until recently, the brightest LED lamps with this base (candles and 45 mm balls) also gave about 600 lm. Recently, an unusually shaped lamp with an E14 base appeared in the assortment of the Russian X-Flash brand, having a luminous flux of 800 Lm and replacing a 75 W incandescent lamp.


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There are both conventional lamps of this type, and lamps with adjustable brightness (dimmable).

I write about X-Flash lamps more often than others, since this brand has new items before anyone else. They are the first and only sell lamps made according to the Crystal Ceramic MCOB technology , the first began to sell "smart" light bulbs that can change the color temperature and adjust the brightness without a dimmer. The lamps, which will be discussed further as long as there is only the X-Flash. I note that I do all these reviews completely disinterestedly, for which some have already begun to scold me.

The TC series includes four lamps:

47314 XF-E14-TC-P-10W-3000K-220V - 800 Lm, 10 W, warm light 3000K - 349 rubles.
47321 XF-E14-TC-P-10W-4000K-220V - 820 Lm, 10 W, white light 4000K - 349 rubles.
47291 XF-E14-TCD-P-10W-3000K-220V - 800 Lm, 10 W, warm light 3000K, dimmable - 499 rubles.
47307 XF-E14-TCD-P-10W-4000K-220V - 820 Lm, 10 W, white light 4000K, dimmable - 499 rubles.



The lamps have a diameter of 38 mm, a height of 110.3 mm and replace the usual "candles".

To my great surprise, under the frosted cap was a regular board with fourteen LEDs.


Photo: led-obzor.ru

The manufacturer could easily make the cap of this lamp in the form of an ordinary candle, but preferred an unusual cylindrical design.

Lamp device.


Photo: led-obzor.ru

I measured the parameters of the first three lamps using Viso LightSpion , Lupine , UPRtek MK350N , Robiton PM2, and Rainbow ECOdim digital dimmer.



All lamps work correctly with switches that have an indicator.

Dimmable lamps allow you to change the brightness over a wide range - from 5 to 100% (I note that the minimum adjustment depends strongly on the dimmer model and with most dimmers the minimum will be around 20% of the total brightness). Lamps are absolutely silent, including when dimming. The ripple level for all lamps does not exceed 1%, including dimmable ones at any brightness level.

The luminous flux of ordinary lamps is even a little more than what was claimed, for dimmable ones it is 6% less than that claimed, but in terms of power equivalent, all the lamps correspond to what the manufacturer promises. They really shine like 75-watt incandescent bulbs. At the same time, the real power consumption turned out to be lower than the stated (8.7-9 W) and the lamps are even more economical than one could imagine. The effectiveness of conventional lamps is very high - 93-96 Lm / W. In dimmable, it is slightly lower.

All lamps have a high level of CRI 82.9-84.4, which allows us to recommend them for use in living rooms.

Table of dimmable lamps with warm light:



4000K white light color transfer table:



Lamps have a wide angle of illumination, more than 220 degrees.



I checked at what minimum voltage the lamps are working on. Conventional lamps operate steadily at voltages above 155 volts (at lower voltages they begin to flash), dimmable at 138 volts (at lower voltages, they reduce brightness by more than 5%).

For comparison, I took photos of a room lit with six 40-watt incandescent lamps and X-Flash 47314 XF-E14-TC-P-10W-3000K lamps. Photos were taken in manual exposure mode with the same settings.

Three X-Flash 800 Lm lamps on the left, six 40W incandescent lamps on the right.



Six X-Flash 800 Lm lamps on the left, six 40W incandescent lamps on the right.



Chandelier with six X-Flash lamps 800 Lm, with three such lamps and with six 40 W incandescent lamps.



I measured the average illumination of the room by five points:

Six incandescent bulbs 40 W: 79 Lx.
Three lamps X-Flash 800 Lm: 91 Lx.
Six lamps X-Flash 800 Lm: 185 Lx.

Even three X-Flash 800 Lm bulbs give more light than six 40-watt incandescent bulbs. The light of warm LED lamps is whiter than that of incandescent bulbs, but it is quite comfortable for those who prefer warm light.

As with all its other bulbs, X-Flash claims a very long lifespan - 50,000 hours and gives a warranty of 5 years. Lamps are sold in the manufacturer’s own online store, so there should be no problems with the exchange in case of lamps failure.

All the parameters of the tested lamps, as well as all the other results of my tests of LED lamps, look at lamptest.ru .

2016, Alexey Nadyozhin

Source: https://habr.com/ru/post/397807/


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