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   rec.arts.sf.written      Discussion of written science fiction an      448,027 messages   

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   Message 447,142 of 448,027   
   Scott Dorsey to petertrei@gmail.com   
   Re: xkcd: Truly Universal Outlet   
   03 Jan 26 15:55:04   
   
   XPost: rec.arts.comics.strips   
   From: kludge@panix.com   
      
   Cryptoengineer   wrote:   
   >But that was not all - the turntable used AC cycles for timing,   
   >and had to be modified with a replacement pulley for the drive   
   >belt, to account for the difference in frequency.   
   >   
   >Electric clocks had similar problems.   
      
   There is less of this today because the Japanese have both 50 and 60 Hz   
   mains for historical reasons, so they designed equipment for both   
   frequencies.  So when the Japanese took over the world electronics market   
   in the seventies, universal frequency equipment became very common.   
   Sometimes it was a matter of having to move a belt from one groove to   
   another in a dual-diameter pulley, and sometimes it was a matter of   
   servo-controlled motors so the line frequency wasn't going directly   
   to the motor anyway.   
   --scott   
   --   
   "C'est un Nagra. C'est suisse, et tres, tres precis."   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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