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Theoretical considerations for the design of self-diagnostic circuit for LED based street lightings

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4 Author(s)
Glisics, S. ; Dept. of Electron Devices, Budapest Univ. of Technol. & Econ., Budapest, Hungary ; Kovacs, Z. ; Marosy, G. ; Poppe, A.

Nowadays street lights employing Solid State Lightning devices are increasingly gaining ground. This paper deals with measurement methods of self-diagnostic electronic circuits for street lamps. Diagnostics is based on thermal transient measurement of LEDs. The measurement is achieved via the change in the forward voltage of the p-n junction. This paper shows and compares three different measurement schemes. One of the schemes is demonstrated with a concrete circuit realization. Shunted LED method was selected for demonstration.

Published in:

Electronics Conference (BEC), 2012 13th Biennial Baltic

Date of Conference:

3-5 Oct. 2012