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???
07/29/06 08:49
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#121303 - What sort of motor are we talking about?
Responding to: ???'s previous message

R1 and C1 should connect across the triac. Without seeing the rest of the circuit, I can only guess how it is connected up.

As for the opto blowing its top - for some reason the triac didn't turn on therefore the current would flow though R5 & R6 and though the opto. POP! is the result.

My expectation of the circuit is that the active should run though the emerg stop switch then to the triac at pin1. Pin2 of the triac is connected to the load. The other side of the load is connected to neutral. Also, there should be a fuse in the circuit somewhere! Most fuses have no hope of protecting the triac so expect the triac to fail. A fuse that can protect the triac is most likely much more expensive than the triac!

What sort of motor is it controlling? A brush type like a power drill or a synchronous type?

List of 15 messages in thread
TopicAuthorDate
What happens if this resistor blows?            01/01/70 00:00      
   I think........            01/01/70 00:00      
      yes I am sure            01/01/70 00:00      
         Its wrong            01/01/70 00:00      
            Great link!            01/01/70 00:00      
   Wrong driver!            01/01/70 00:00      
   What sort of motor are we talking about?            01/01/70 00:00      
      motor type and more info            01/01/70 00:00      
         More background            01/01/70 00:00      
            re: more background            01/01/70 00:00      
               App notes.            01/01/70 00:00      
   More!            01/01/70 00:00      
      back to back.            01/01/70 00:00      
      Thanks Guys            01/01/70 00:00      
         Luck            01/01/70 00:00      

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