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???
11/26/04 00:53
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#81967 - Mains detector
Responding to: ???'s previous message
And maybe something like this as mains detector, which can be connected to Andy's circuit:
(DO NOT CONNECT TO MAINS VOLTAGE !!!!!!)





1W rating of 1k resistor is only needed if voltage behind bridge rectifier (see Andy's picture) is rather high.

Kai

List of 22 messages in thread
TopicAuthorDate
230V AC Monitoring            01/01/70 00:00      
   Re: 230V AC monitoring.            01/01/70 00:00      
      More questions            01/01/70 00:00      
         reply            01/01/70 00:00      
            Use an optocoupler            01/01/70 00:00      
               Why opto?            01/01/70 00:00      
                  picture            01/01/70 00:00      
                     Mains detector            01/01/70 00:00      
                     "Mains"detector            01/01/70 00:00      
                        Earlier detect            01/01/70 00:00      
                           Re: Earlier detect            01/01/70 00:00      
                     Why opto?            01/01/70 00:00      
                        Opto            01/01/70 00:00      
   Capacitive Divider            01/01/70 00:00      
      A word of warning            01/01/70 00:00      
      Reply            01/01/70 00:00      
         Voltage sensing            01/01/70 00:00      
            Step down transformer            01/01/70 00:00      
   Danger!            01/01/70 00:00      
      Peak and RMS: Andy            01/01/70 00:00      
         What?            01/01/70 00:00      
         230 Vrms            01/01/70 00:00      

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