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???
02/23/10 14:33
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 		 #173468 - RE: I never read anything about this
Responding to: ???'s previous message
Actually, thermistors have been used to limit inrush currents for a very, very long time!

Back in the days of thermionic valves ("tubes"), it was quite common to use a thermistor to limit the surge of current into the cold filaments ("heaters") - which was a common cause of failures at switch-on...

List of 26 messages in thread
TopicAuthorDate
Current Rating of Thermistor/Inductor            01/01/70 00:00      
   NTC or PTC ?            01/01/70 00:00      
      Thanks Andy            01/01/70 00:00      
         PTC.            01/01/70 00:00      
            How will a thermistor LIMIT inrush current ?            01/01/70 00:00      
         SCR dI/dt limiting            01/01/70 00:00      
            Magic bit            01/01/70 00:00      
            Rule 8 comes from here...            01/01/70 00:00      
         RE: I never read anything about this            01/01/70 00:00      
         There are many types of "thermistor"            01/01/70 00:00      
   Thanks Steve and Andy            01/01/70 00:00      
      That's probably the safest route            01/01/70 00:00      
   SCK NTC series...            01/01/70 00:00      
      That's probably not a good idea, unless...            01/01/70 00:00      
      Thanks Kai...            01/01/70 00:00      
         No, you have it exactly the wrong way around!            01/01/70 00:00      
            Would any other NTC do the job..?            01/01/70 00:00      
            Hint: cause of "inrush"            01/01/70 00:00      
               The great White light NOW struck me !!!            01/01/70 00:00      
         NTC versus PTC...            01/01/70 00:00      
            NTC or PTC?            01/01/70 00:00      
               Or by other words...            01/01/70 00:00      
                  Is that really true?            01/01/70 00:00      
                     What I meant...            01/01/70 00:00      
                        It's all about conserving energy            01/01/70 00:00      
   An informative link for In-rush current            01/01/70 00:00      

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