Review on Russian led bulb Onlite. 3

Today I will disassemble an Onlite LED lamp of the budget segment for 99 rubles.

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https://preview.redd.it/l9y13aa3vkza1.png?width=1920&format=png&auto=webp&v=enabled&s=0ec8aed5333288edbd841ad12c0ffb00c5b48c2e

The manufacturer claims 12 watts of power, let’s check! At the input of 220 Volts and the first time I turn on, I see that the real power is 8.9 watts.

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https://preview.redd.it/twnowvy3vkza1.png?width=1920&format=png&auto=webp&v=enabled&s=b5b60703575f6da0de93ffe01245f71a894e2c00

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Yeah, it’s not very similar to 12 watts, but anyway, I’ll try at 230 Volts. It got even worse — 8.7 watts.

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https://preview.redd.it/9ok9yol4vkza1.png?width=1920&format=png&auto=webp&v=enabled&s=d43f18ff50e03285e7e46b563012854325ab6dbe

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I leave the lamp to work for 15 minutes and measure the power again — 8.3 W. Yes, although I did not expect the power to match for a budget lamp, but it’s a shame every time.

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https://preview.redd.it/m6v05bc9vkza1.png?width=1920&format=png&auto=webp&v=enabled&s=67c3a6b62b2a03be0df68adde1a856b2f82176ab

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Now it’s time to measure the real characteristics of the light quality of this lamp. Let’s start with the color temperature — I got it equal to 3880 K, and the color rendering index turned out to be 79.3.

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https://preview.redd.it/614s4xx9vkza1.png?width=1920&format=png&auto=webp&v=enabled&s=e4067bca642f4d82185698e2055bdd764578ee9f

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Using the data on the deviation of radiation from this lamp from the arc of a completely black body, I find the color offset for this lamp.

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https://preview.redd.it/s9nj6shavkza1.png?width=1920&format=png&auto=webp&v=enabled&s=147334fa883ca335fd9a5cfffb3db9bfa73e07e4

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It turns out that the lamp has a green-yellow tint, but it is negligible, not to be noticed by the eye.

Now the lamp pulsates. Everything is fine! There are no pulsations that could harm health.

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https://preview.redd.it/iqfnuenbvkza1.png?width=1920&format=png&auto=webp&v=enabled&s=7a6cac8e7a10717f12636bf2a1c087dc31042873

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I measure the amount of light from a light bulb. The lamp is located 1 meter above the plane of the table, I turn off the external backlight.

At 220 Volts, I observe 235 Lux.

250 Volts — 235 Lux,

170 Volts — 235 Lux.

And only at 45 Volts the lamp stops shining! A very curious result. This lamp can be quite recommended to those who are looking for stable light.

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https://preview.redd.it/xfu9dnecvkza1.png?width=1920&format=png&auto=webp&v=enabled&s=477e5e1234b23eddf94ad31e09cdf6fcd93fe27a

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The operation of the illuminated switch is normal, there are no problems.

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https://preview.redd.it/n0dospqdvkza1.png?width=1920&format=png&auto=webp&v=enabled&s=20f33e98b40ac3af032a205de98ebe5fad0032af

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The dimensions of the lamp correspond to those indicated by the manufacturer 108 x 60mm.

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https://preview.redd.it/0fscnbdevkza1.png?width=1920&format=png&auto=webp&v=enabled&s=311ff1d04f7813919781304ccfcbe29d260f7614

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The heating of the lamp bulb is 77 degrees Celsius, and the housing is 38.2.

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https://preview.redd.it/1odi3qtevkza1.png?width=1920&format=png&auto=webp&v=enabled&s=50b441886f4ab90ed1b52a91aeb5bc5c7b1e782d

Let’s remove the illumination diagram from the light bulb Online. My luminous flux came out equal to 703 Lumens, while the manufacturer indicated 1000.

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https://preview.redd.it/8j21g1dfvkza1.png?width=1920&format=png&auto=webp&v=enabled&s=75260ff053e25658ba104a4dea3de8bc4bdcf7cf

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There are 8 LEDs connected in series under the bulb. The entire element base of the driver is heated on the same board as the LED housings.

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https://preview.redd.it/brkzqc0gvkza1.png?width=1920&format=png&auto=webp&v=enabled&s=e0c7e2b434dc5445b5151e61fab99d8e04350f54

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Let’s measure the temperature of the hottest point of the board using a thermocouple. After 30 minutes of warming up, it turns out that the temperature of the diode board is 82 degrees Celsius.

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https://preview.redd.it/n1lrdahhvkza1.png?width=1920&format=png&auto=webp&v=enabled&s=bf8163018c4463c4534c6109f4d022dc4cff26da

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Under the phosphors, three crystals of LEDs are guessed.

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https://preview.redd.it/74yy241ivkza1.png?width=1920&format=png&auto=webp&v=enabled&s=fe13d94aa0cd660de8d09288962de3d1b475f05f

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The direct voltage drop on the normally glowing LED housing is 9 Volts.

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https://preview.redd.it/j41t2k4kvkza1.png?width=1920&format=png&auto=webp&v=enabled&s=a29d3cc63c902c2b46c64745825b9ec21bc837a6

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The current in the LED power supply circuit is 107 mA.

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https://preview.redd.it/6vm56bnkvkza1.png?width=1920&format=png&auto=webp&v=enabled&s=8f4a28b5c0f16675042014625f810ee475f5a9dd

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Cooling is pretty standard — the case is composite and careless coating with sealant.

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https://preview.redd.it/7dxbg3alvkza1.png?width=1920&format=png&auto=webp&v=enabled&s=dcdbff6ff54be63c0244497f55799537e05f39a0

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That’s it. And as much as I would not like to advise this lamp due to its resistance to voltage changes and pretty good light characteristics, but the deception in power does not allow me to do this, so there is no need to buy an online lamp for 12 watts.

More info on Russian is here [https://domorost.ru/post/obzor-lampi-onlait-15-vt-s-tsokolem-ye27_645c883aa8d3e1bd4febd35a](https://domorost.ru/post/obzor-lampi-onlait-15-vt-s-tsokolem-ye27_645c883aa8d3e1bd4febd35a) (hope u have got translation addon on ur brouser)

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