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???
11/17/13 10:37
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#190144 - Specs that are not normally told..
Responding to: ???'s previous message
Jan Waclawek said:
And, of course, I doubt any manufacturer would say anything beyond this unless you buy his potentiometers by trucks.


I would tend to agree here - for any product there are some specs that are never divulged in the normal course. This whole requirement arose beacuse I was trying to verify a data acquistion channel meant for a 2 wire loop powered transmitter. In the absence of a calibrator I replaced the transmittter with a combination of 5k/1.5W potentiometer + 1kOhm series resistor. It did the job - quick and dirty - but I was not at ease about the potentiometer when near the 20mA setting. [ loop was powered by a 24V dc source ]

Raghu

List of 15 messages in thread
TopicAuthorDate
Power rating of potentiometers            01/01/70 00:00      
   Not the point            01/01/70 00:00      
      show me such            01/01/70 00:00      
         (was) incorrect            01/01/70 00:00      
            not your average "pot"            01/01/70 00:00      
         Specs that are not normally told..            01/01/70 00:00      
            power            01/01/70 00:00      
            test bench vs field design             01/01/70 00:00      
         That was kind of my point            01/01/70 00:00      
   pot limits            01/01/70 00:00      
      While I don't disagree ... there are different failure modes            01/01/70 00:00      
   Bourns says: "yes."            01/01/70 00:00      
      Tesla says: no            01/01/70 00:00      
      cermet or wirewound            01/01/70 00:00      
         No big difference, if it all            01/01/70 00:00      

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