Testing and review of the Farlight 9W E27 LED lamp

Today we will talk about the Farlight lamp. An interesting situation has developed with it. As part of my project, I am testing LED lamps and can advise something. I liked this lamp, but my colleagues did not agree with this assessment. The result is a negative assessment for the Farlight lamp in our rating. This makes this study, which I am eager to share with you, even more interesting.

The lamp was bought for 84 rubles. Farlight states that the power of its LED lamp is 9W. Let's start with this. There are 220 volts at the input: I turn on the lamp when I first turn it on 8.6 watts. The power factor is 0.6.

Expenses for the year: 131 rubles with the lamp working 8 hours a day and at a rate of 5.38 rubles per kilowatt. The lamp does not change its power when the voltage changes to 230 volts.

I return to the usual 220 Volts. I warm up the lamp for 15 minutes – the lamp power is 8.1 Watts, the power factor remains 0.6. Not such a bad result.

Color temperature 3814 K, color rendering index Ra 81.4.

The color shift from the lamp is downwards, into the violet-purple region, but with such a small shift the light from this lamp can be considered absolutely white.

Let's move on to light pulsations – there is no risk for the Farlight lamp under study. Pulsation is 2.76% at a very high frequency of 12.7 kHz. The light is risk-free.

The lamp a meter above the table is turned on and warmed up. 220 volts in the network.

I remove external lighting – 215 Lux;

250 Volts – 217 Lux;

170 Volts – 211 Lux;

50 Volts – complete darkness.

What can be said, the driver of this lamp has a very large range. Such a lamp can be used where the voltage in the network is unstable, somewhere outside the city, for example.

The lamp, which showed itself so well, glows unpleasantly in complete darkness when working with a backlit switch. When turned off, the lamp does not go out. Unfortunately, the farlight does not work with a backlit switch.

It is very important to know about the heating of the lamp. After all, temperature is the main enemy of the LED. The body heats up to 81 degrees Celsius. The bulbs are colder – about 47 degrees Celsius.

The luminous flux that I calculated is 694 Lumens, and the manufacturer indicates 750 Lumens.

In the ranking of LED bulbs with E27 base this lamp received a negative rating. Despite my advice to buy this lamp, colleagues had a different opinion, arguing quite a high temperature for such a low-power lamp and flaws in the test results.