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Text File  |  1992-12-27  |  1.1 KB  |  29 lines
  1. Newsgroups: sci.electronics
  2. Path: sparky!uunet!think.com!rpi!batcomputer!alchemy.tn.cornell.edu!matthew
  3. From: matthew@alchemy.tn.cornell.edu (Matthew Kleinmann)
  4. Subject: Re: RFI free dimmer switches...
  5. Message-ID: <1992Dec27.063325.10494@tc.cornell.edu>
  6. Sender: news@tc.cornell.edu
  7. Nntp-Posting-Host: alchemy.tn.cornell.edu
  8. Organization: Alchemy International
  9. References: <72415@cup.portal.com> <1992Dec26.063254.23524@murdoch.acc.Virginia.EDU> <1992Dec27.051620.22808@ee.ubc.ca>
  10. Distribution: na
  11. Date: Sun, 27 Dec 1992 06:33:25 GMT
  12. Lines: 15
  13.  
  14. A rheostat will get mighty warm dimming a light.  Not a smart way to go.
  15. If you want to follow that sort of a path, I would try a varyable voltage
  16. transformer.  At least that will be a bit efficent.  You may also want to 
  17. try converting the output of your lamp dimmer to DC (with 4 diodes) and
  18. adding a filter so the higher frequency noise going to the lamp is smootheed
  19. out.
  20.  
  21. --Matthew
  22.  
  23.  
  24. -- 
  25.                        Alchemy International, Ithaca NY
  26.                         matthew@alchemy.tn.cornell.edu
  27.                          matthew@alchemy.ithaca.ny.us
  28.                               Public Access Unix
  29.