What is the voltage for LED bulb?
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14 Apr 2013 | For the high-voltage LED system, this relationship is a required condition for the accurate system reliability prediction. |
61 Citations | Due to careful parameters selection, the system bus voltage can be kept low as needed in high-power LED drive designs. |
11 Citations | The results suggest that the inherent forward voltage/ junction temperature dependency of LEDs can be used to measure and monitor LED junction temperature in a luminaire under operational conditions. |
45 Citations | Moreover the results show a large variety in light intensity variations when different LED lamps are subjected to the same voltage fluctuations. |
07 May 2007 116 Citations | LED string voltages are detected online and used in a feedforward path for dynamic bus voltage scaling, resulting in improved system efficiency at low dimming levels. |
11 Oct 2014 7 Citations | Results of operating junction temperature measurements of a LED street light indicate that inherent forward voltage dependency on junction temperature of LEDs can be applied to measure junction temperature of LEDs in a LED based luminaire. |
Meanwhile, measurements performed in different ambient temperatures indicated that for only 4 from among the 13 LED sources studied the given value of the power of an equivalent light bulb may be recognized as in accordance with the actual state of affairs and still with a reservation that specified ambient temperature shall be required. | |
Calculations assessing conformity with the declared power showed that an important disadvantage for most of the LED sources results from the method of marking them with the power of an equivalent light bulb from the point of view of the luminous flux emitted. | |
01 Jun 2010 21 Citations | The total heat dissipation rates in those two thermal calculations are close to each other, which demonstrate that the thermal calculation is feasible for thermal analysis of LED bulb. |