XPost: sci.electronics.design   
   From: none@nospam.org   
      
   "Bitrex"  wrote in message   
   news:v-KdncsXROY4U_TQnZ2dnUVZ_s0AAAAA@earthlink.com...   
   > http://cgi.ebay.com/MATCHED-PAIR-NOS-NIB-SYLVANIA-1D21-SN4-TUB   
   S-USA-/190503003630?pt=Vintage_Electronics_R2&hash=item2c5add25ee#ht_900wt_905   
   >   
   > What would one use a "matched pair" of neon discharge tubes for,   
   > exactly? And how would one match them?   
   >   
      
   Those tubes were used as the flash lamps in early General Radio   
   Strobotacs.  Matching them means different things depending on the   
   application - equal light output, equal breakover voltage, equal   
   discharge voltage, etc.   
      
       73, Dr. Barry L. Ornitz     WA4VZQ   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)