XPost: uk.d-i-y, alt.home.repair, alt.sci.physics   
   From: CFKinsey@military.org.jp   
      
   On Thu, 03 Oct 2019 19:29:42 +0100, Robert  wrote:   
      
   > On 03/10/2019 14:29, Commander Kinsey wrote:   
   >> Why do LEDs generate heat? I want a technical answer not "because   
   >> they're inefficient". And will we ever make them more efficient?   
   > Besides the inefficiencies in the LED itself which other posters have   
   > covered, LED lamps have some current regulation or power supply built-in   
   > which will not be 100% efficient and thus generates heat.   
      
   True, but it's the LEDs themselves that are the warmest, and also the most   
   susceptible to heat.   
      
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