File:SpectrumLED.JPG
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Size of this preview: 800 × 599 pixels. Other resolutions: 320 × 240 pixels | 640 × 480 pixels | 1,024 × 767 pixels | 1,280 × 959 pixels | 2,560 × 1,918 pixels | 7,300 × 5,470 pixels.
Original file (7,300 × 5,470 pixels, file size: 10.67 MB, MIME type: image/jpeg)
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DescriptionSpectrumLED.JPG |
English: Disassembled 7-watt LED light bulb (500lm) manufactured by Wojnarowscy. Perfect product for it's small price only 5€. There were found out next properties during examination:
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Date | |||
Source | Own work | ||
Author | Dmitry G | ||
Permission (Reusing this file) |
I, the copyright holder of this work, hereby publish it under the following licenses: ![]() ![]() ![]() This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
You may select the license of your choice. |
Annotations InfoField | This image is annotated: View the annotations at Commons |
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English: cosφ is 0.6, but energy class is confered to A+
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English: flickering is missing - this lamp is not harmful for eyes
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English: construction of heat sink is not successful
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English: very good construction of power supply
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 16:37, 16 August 2014 | 7,300 × 5,470 (10.67 MB) | Dmitry G (talk | contribs) | {{Information |Description={{en|1=Disassembled 7-watt LED light bulb (500lm) manufactured by Wojnarowscy. Perfect product for it's small price only 5€. There were found out next properties during examination: *Advantages: ** high cosφ (0.6) ** fli... |
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Author | Dmitry G |
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Copyright holder |
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Light source | Daylight |
Rating (out of 5) | 5 |