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???
06/27/03 09:08
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#49496 - RE: detector of 220volt
Responding to: ???'s previous message
I agree,,,,,an opto coupler with a big honking power resistor to detect off a mains power line is not the best of design technique. Look down futher and see the approach showing from Kai Klaas with a small transformer. His idea is far superior becasue the transformer does a far far better job of providing an efficient energy conversion from the line side to the isolated load side. (Plus the additonal benefits that Kai cites.)

Michael Karas


List of 18 messages in thread
TopicAuthorDate
detector of 220volt            01/01/70 00:00      
   Draw a schematic!            01/01/70 00:00      
   RE: detector of 220volt            01/01/70 00:00      
   ASCII Art            01/01/70 00:00      
   RE: detector of 220volt            01/01/70 00:00      
      RE: detector of 220volt            01/01/70 00:00      
      RE: detector of 220volt            01/01/70 00:00      
         RE: detector of 220volt            01/01/70 00:00      
   Transformer isolation            01/01/70 00:00      
      RE: Transformer isolation            01/01/70 00:00      
         RE: Transformer isolation            01/01/70 00:00      
         Circuit works!            01/01/70 00:00      
            RE: Circuit works!            01/01/70 00:00      
               RE: Circuit works!            01/01/70 00:00      
      RE: Transformer isolation            01/01/70 00:00      
         RE: Transformer isolation            01/01/70 00:00      
            RE: Transformer isolation            01/01/70 00:00      
   RE: detector of 220volt            01/01/70 00:00      

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