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???
02/07/06 15:15
Modified:
  02/07/06 15:18
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 		 #109414 - No varying load at additional winding!
Responding to: ???'s previous message
Saif said:
though the same scheme works well when the output is sampled directly from the output winding taps where load is actually connected,but dont know why its not working when sensed from a additional winding of o/p transformer.

The reason why it does not work with being connected to additional winding is, that voltage drop at main output winding due to increased load cannot be detected by the additional winding!! Because the load at additional winding is always constant!

You have a varying load at main output winding but a constant load at additional winding. So, you cannot keep output voltage constant with this scheme. Take the main output winding for the feedback.

Kai

List of 40 messages in thread
TopicAuthorDate
dc/ac square wave inverter            01/01/70 00:00      
   what do you drive with these square wave            01/01/70 00:00      
      i m driving ....            01/01/70 00:00      
         that will not do it            01/01/70 00:00      
   How?            01/01/70 00:00      
   Sujjestions            01/01/70 00:00      
      for eric & gowrish            01/01/70 00:00      
         whatever micro said, I said            01/01/70 00:00      
         And me?            01/01/70 00:00      
            just pure square wave            01/01/70 00:00      
   any replies?            01/01/70 00:00      
      what about this:            01/01/70 00:00      
         Ringing...            01/01/70 00:00      
            very likely            01/01/70 00:00      
               Quick glance at scope            01/01/70 00:00      
      Thoughts...            01/01/70 00:00      
         very true kai            01/01/70 00:00      
            that is scary!            01/01/70 00:00      
               i dont understand mr eric            01/01/70 00:00      
                  what else is 'ur' ? It is not in my engl            01/01/70 00:00      
                     sorry for that            01/01/70 00:00      
            No varying load at additional winding!            01/01/70 00:00      
   so            01/01/70 00:00      
      again            01/01/70 00:00      
         so whom shall i follow now            01/01/70 00:00      
            not a "contradiction" just 2 possibiliti            01/01/70 00:00      
               one more thing            01/01/70 00:00      
                  Again            01/01/70 00:00      
                     but there is some thing....            01/01/70 00:00      
                        I am absolutely sure            01/01/70 00:00      
                           TO MR ERIC            01/01/70 00:00      
                              re TO MR ERIC and about know-how            01/01/70 00:00      
                              What??            01/01/70 00:00      
                                 Kai, you missed [b] and [/b]            01/01/70 00:00      
                           More to know-how            01/01/70 00:00      
                        Are you sure?            01/01/70 00:00      
                           I am sorry for my behaviour            01/01/70 00:00      
                              You are welcome            01/01/70 00:00      
   You NEED a scope!!            01/01/70 00:00      
      the blind leading the deaf            01/01/70 00:00      

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