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Post by principled on Jun 21, 2012 20:14:22 GMT 1
Just in case posters missed it, I thought this might be of interest. Although of no practical use currently, it may open a few doors in the future. phys.org/news/2012-03-efficiency.htmlP |
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Post by Progenitor A on Jul 6, 2012 9:07:36 GMT 1
Just in case posters missed it, I thought this might be of interest. Although of no practical use currently, it may open a few doors in the future. phys.org/news/2012-03-efficiency.htmlP Surprising. However as the article states, when the input voltage is halved, the input power is reduced by a factor of 4 - this would only be true if the resistance slope of an LED were linear - in fact is not quite true as an LED resistance curve is not linear (although it approximates to linear over small increments of current) Neverthless an extremely interesting phenomenon - if the emitted light could be captured by a photo-detector then we would get current amplification for free! I wonder what is happening? |
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Post by striker16 on Sept 17, 2012 9:36:45 GMT 1
Heat is always a problem in such devices because heat causes atoms to become excited, leading to more obstruction to current flow due to particle collisions. This is why super-conductors are so efficient - they allow more of the current carriers to get through.
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