LED strip COXO FCOB RA90 480 LED, 10 W
I managed to find an inexpensive LED strip on AliExpress with a really high color rendering index and parameters that corresponded to the declared ones.
Ordered, studied, tested.
Unlike the untitled tape with fictitious characteristics, which I'm talking about I recently told you that this tape shows the manufacturer Shenzhen Coxo Technology, its address and contacts. On AliExpress they themselves sell their tapes (COXO Official Store).
The tape comes in a branded package; the reel and the package have the same stickers indicating the tape model “A5000-480-30K-V24-R90-NWP-P8”.
There are no markings on the tape itself, only the voltage is 24V. 3M brand double-sided adhesive tape is used.
The seller provides the following parameters:
Number of LEDs: 480 LED/m.
Voltage: DC24V
Power: 10 W/m
FPCB width: 8mm
Cutting length: 50mm
Color temperature: warm white (3000K), natural white (4000K), cool white (6500K).
Color rendering index: Ra>90
Viewing Angle: 180°
The seller has a 320 LED/m tape in the same lot, but in the description there is a sign that says that such a tape only has a color rendering index of Ra80, and only the 480 LED/m tape has a high color rendering index of Ra90, so I ordered strip with a large number of LEDs.
Once the tape arrived, the first thing I did was measure its light parameters. Color rendering index Ra (CRI) 92. The R9 index, which shows the quality of pink color rendering and affects the natural color of human skin, is quite high – 49 (for LED light sources with Ra80 it is usually about 0). Color temperature is about 3050K.
Five meters of tape consumes a current of 1.56 A (37.4 W, 7.5 W/m) from a 24 V voltage source, the voltage at the end of the tape drops to 22.9 V. When power is connected on both sides, the current consumption increases to 1.86 A (44.6 W, 8.93 W/m m). A ten-centimeter piece of tape consumes 47 mA (11.3 W/m)
The measured luminous flux of a meter of tape connected on one side was 790 lm/m, while a ten-centimeter segment gives 930 lm/m. The differences are related to the voltage drop across the tape, so it makes sense to focus on a lower value.
I bought five meters of this tape for 675 rubles and, of course, less than 150 rubles per meter of tape with Ra92 is very good (in Russia, tapes with such characteristics are sold many times more expensive).
Now the seller has raised the price, but surely when the sale starts, the price will be low again.
PS I have already tested the Ra>90 tape from the most popular manufacturer on AliExpress, BTF Lighting. I'll tell you about it soon.
© 2024, Alexey Nadezhin
