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???
07/15/10 17:29
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 		 #177308 - Or this might be the problem...
Responding to: ???'s previous message
Hi Avni,
You are taking just one signal for Zero-crossing. i.e. the output of the Second transistor only.

I have not gone into the source code you have attached, but think about it; Do you need rising AND falling edges of the zero-crossing signal, or just one edge is OK for your source code?



List of 50 messages in thread
TopicAuthorDate
triac firing angle            01/01/70 00:00      
   is the output loaded?            01/01/70 00:00      
      o/p side            01/01/70 00:00      
         at output side we have connected fan            01/01/70 00:00      
            230v ac fan            01/01/70 00:00      
               it would not            01/01/70 00:00      
                  230v ac blub            01/01/70 00:00      
                     Suppose?            01/01/70 00:00      
   so it's down to your scribbles            01/01/70 00:00      
   So many questions            01/01/70 00:00      
      discription            01/01/70 00:00      
         why bother            01/01/70 00:00      
         Try this            01/01/70 00:00      
         Another potential problem            01/01/70 00:00      
            e-mail address            01/01/70 00:00      
               no need for a circuit diagrem, but ..            01/01/70 00:00      
               RE: I'm not able to attach my circuit diagram            01/01/70 00:00      
                  Not Me...........            01/01/70 00:00      
                     Oops            01/01/70 00:00      
   My Method to post circuit diagram            01/01/70 00:00      
      website address            01/01/70 00:00      
         orcad            01/01/70 00:00      
         Read the instructions!            01/01/70 00:00      
            schematic            01/01/70 00:00      
               Link            01/01/70 00:00      
               Follow the instructions!            01/01/70 00:00      
                  schematic            01/01/70 00:00      
                     Two LEDs ?!            01/01/70 00:00      
                     This might be the problem            01/01/70 00:00      
                     Or this might be the problem...            01/01/70 00:00      
                     Don't understand            01/01/70 00:00      
                        Re zero-crossing, still has no been answered            01/01/70 00:00      
                     There are none so blind as those that will not see...            01/01/70 00:00      
                        working but not getting satisfication            01/01/70 00:00      
                        working but not getting satisfication            01/01/70 00:00      
                           What did you expect?            01/01/70 00:00      
                              which will ...            01/01/70 00:00      
                                 RE: "indentions"            01/01/70 00:00      
                     Redesign needed            01/01/70 00:00      
                        Problematic...            01/01/70 00:00      
                           The Triac firing angle can be set using the Analog Comp.            01/01/70 00:00      
                              Danger!            01/01/70 00:00      
                              Caution to hobbiest            01/01/70 00:00      
                                 Some hints to start the circuit working            01/01/70 00:00      
                                    The OP's schematic *is* isolated            01/01/70 00:00      
                                       People tend to consider processors "safe"            01/01/70 00:00      
                                    Isolation            01/01/70 00:00      
                                       many different opinions/views for the same issue            01/01/70 00:00      
                                          RE: The schematic as posted has major flaws            01/01/70 00:00      
      Thanks            01/01/70 00:00      

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