XPost: sci.electronics.basics, sci.electronics.design, sci.electronics.misc   
   From: andrew@cucumber.demon.co.uk   
      
   In article <540B561B.1090100@electrooptical.net>,   
   	Phil Hobbs  writes:   
   > Do you know any actual arc lamps that are symmetrical?  The heat load is   
   > heavily concentrated on the anode.   
      
   I don't have any headlamp arc lamps. I did a google search for images,   
   and they all looked symmetrical, but I don't know how representitive   
   those images were, or if they were intended for AC or DC operation, so   
   it didn't tell me anything useful.   
      
   I have several other symmetrical arc lamps, but those are intended for   
   AC operation, so that's not a surprise.   
      
   --   
   Andrew Gabriel   
   [email address is not usable -- followup in the newsgroup]   
      
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