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???
09/21/09 17:17
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#169025 - Don't use a relay
Responding to: ???'s previous message
I think a relay is not good idea because it is a slow device.
I used triacs for AC switching and it is very usual to loose a half and then is driving only half wave, with a relay you can't see it, but with an optocoupler yo can do it.

List of 14 messages in thread
TopicAuthorDate
Detecting AC voltage.....            01/01/70 00:00      
   Thoughts...            01/01/70 00:00      
   ring-detector?            01/01/70 00:00      
      The voltage range appears to be in the same ball-park            01/01/70 00:00      
         In old systems ... some of which are still in use ...            01/01/70 00:00      
            Don't use a relay            01/01/70 00:00      
               I was thinking optocoupled triac driver ...            01/01/70 00:00      
   Capacitor or Relay            01/01/70 00:00      
   Capacitive dropper            01/01/70 00:00      
      I used it for a long time in traffic lights controllers            01/01/70 00:00      
   Capacitive Dropper            01/01/70 00:00      
   Ideas Appreciated            01/01/70 00:00      
      Strobed measurement to minimize heat dissipation            01/01/70 00:00      
         Clever Concept            01/01/70 00:00      

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