Testing the Generica 12W E27 lamp
It seems that Generica is a brand that has filled store shelves to capacity and has gained a strong foothold there.
The popularity of this brand is understandable; it is due to its low price. Everyone already knows that Generica is a sub-brand of the iek manufacturer, it will be quite interesting to compare the price distributions for LED lamps from these brands.
As you can see, IEK is significantly more expensive, almost twice as expensive. If you want to spin the interactive diagrams yourself, then iek hereA generica here (price index is updated every few days and is dynamic).
It would seem, why not do everything under one name? Yes, my intuition immediately tells me that cheap is not good. Let's check it out.
The generic promises 12 watts of power. Let's check. The usual 220 volts in the network. I turn on the lamp. When first turned on, 7.7 watts. Power factor 0.56.
Perhaps it will help the lamp to maintain the power in accordance with the declared one if the input voltage increases to 230 Volts.
The result was 8.2 watts, which is in no way similar to the 12 watts that Generic promised on the packaging.
After warming up for 15 minutes, we observe that the power of this lamp differs from that indicated on the packaging by as much as 33% and is 8W.
Color temperature 3834 Kelvin. The X and Y coordinates are determined and for them ΔUV is equal to 0.0008 (the light from the lamp can be considered without any admixtures of any colors). Color rendering index 83.
The color rendering index that came out to be 83 was calculated for 8 pastel colors and there is no certainty that the color rendering index for intense colors will be the same. You can look at the table, where there are not only 8 pastel colors, but also 6 more intense colors.
For example, for the intense red color R9, the color rendering index is only 6.8.
Not at all similar to the 100 that are in the top eight for the corresponding R3 index.
So, jumping out due to the high color rendering coefficient on the R3 shade, the Generic lamp received an RA of 83.
At the same time, on other shades, and especially on intense colors, color rendering coefficients are much worse.
Ripple is slightly above 4% at 102 Hz. The norm is according to GOST, but in my opinion it’s too big.
The lamp is a meter above the table, turned on and warmed up. The network is 220 volts. There is no external lighting.
220 Volt – 263 Lux.
250 Volt – 264 Lux;
170 Volt – 13 Lux;
160 Volts – complete darkness.
The driver of this lamp is not sufficiently resistant to voltage changes in household outlets.
The lamp works normally with the backlit switch.
The body heats up to about 85 degrees, and the bulb about 47 degrees Celsius – very hot for 8 watts.
The luminous flux came out to be 839 Lumens. And the manufacturer indicates as much as 1200 Lumens for its lamp.
Diode board: 8 LED housings, each housing measuring 2.8×3.5mm, all housings are connected in series, one fails and the entire lamp goes out.
Under the phosphor of each case, two small crystals can be discerned.
Here on the diode board there are two connectors, one of which is supplied with a voltage of 220 Volts, and we will find out what is in the second when we remove the diode board.
We don’t see a diode bridge on the diode board, which means it is integrated inside the current stabilization chip in the LED power supply circuit.
Using a thermal imager, the point of maximum heating of the diode board was found and the temperature of the diode board without a diffuser was measured, thanks to the installation of a thermocouple at this point.
The thermocouple is installed at the point of maximum heating of the diode board, next to the microcircuit. Diode temperature 87 degrees Celsius. This is a lot for an eight-watt lamp.
Inside each case I see two bright spots. Direct voltage drop across the case is 35.6 Volts.
This means that inside one case, where we saw two bright spots, there are as many as 12 small LED crystals. An assembly of six crystals in each bright spot.
The driver output voltage is 274 volts. The current in the LED power circuit is 26.4 milliamps.
Generica has the usual cooling, composite body, aluminum radiator, plastic inside.
And you know, although I cannot recommend this lamp for purchase, everything has its price. Generica is a very budget-friendly brand. And for such lamps we get something with distinct pulsations and more or less working. Well done IEK, they have occupied the niche of cheap lamps with dignity.
I often come across lamps at a price of 200-300 rubles with characteristics no better than those of this specimen. We usually hide such lamps, but if you wish, you can reveal their list, for example, in the rating of those tested by Domorost e27 lamps.
Take care of your eyes!
