XPost: sci.electronics.design   
   From: burrynulnulfour@ppllaanneett.nnll   
      
   Bitrex wrote:   
   > 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?   
      
      
   Around 1960 I used neon tubes as "zenerdiodes" for 60-80 volt.   
   Matching them on voltage for example, at the same series resistor.   
      
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