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???
03/26/07 22:16
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#135943 - Not "over" just proper
Responding to: ???'s previous message
The thing is, a solenoid looks like close to a dead short for the fraction of a second it takes before the iron core completes the magnetic circuit properly - and since its a mechanical movement that causes the impedance change, it takes longer than you expect. Look VERY carefully at Ipk non-repetitive rating of the devices you choose.

Steve

List of 16 messages in thread
TopicAuthorDate
Protecting a Triac            01/01/70 00:00      
   Bigger triac            01/01/70 00:00      
   Snubber, mains filter, varistor?            01/01/70 00:00      
      Assymetry            01/01/70 00:00      
         Snubber ?            01/01/70 00:00      
      RE: Snubber            01/01/70 00:00      
         Protecting a triac            01/01/70 00:00      
   switch at zero crossing?            01/01/70 00:00      
      Zero crossing            01/01/70 00:00      
   Is it back EMF or short circuit            01/01/70 00:00      
      Polyswitches            01/01/70 00:00      
         Thermal properties aside            01/01/70 00:00      
            Why bother ?            01/01/70 00:00      
               I vote for overrating too            01/01/70 00:00      
   Thanks            01/01/70 00:00      
      Not "over" just proper            01/01/70 00:00      

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