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An LED converts current into light. Reverse biasing it causes it to convert light into electricity (i.e it acts as a photodetector).
by pmiller2 8y ago
An LED converts current into light. Reverse biasing it causes it to convert light into electricity (i.e it acts as a photodetector).
- sebazzz 8y agoSo how does it work with the law of conservation of energy? [1] [1]: https://en.wikipedia.org/wiki/Conservation_of_energy https://en.wikipedia.org/wiki/Conservation_of_energy
- saagarjha 8y agoIt's just converting between two forms of energy: total energy is still conserved. You might be thinking about the second law of thermodynamics, which limits how much can be converted.
- jfoutz 8y agoLike you'd expect? No one is making claims of free energy. It's like putting a stirling engine on the side of an internal combustion engine. You have a chance to grab some of the waste heat, why not use it? Specifically, capturing that waste heat will boost efficiency by some small %, if the additional systems total construction cost is less than the efficiency given over the lifetime of the system, why not?