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   alt.electronics      Electronics design, repair, worship, etc      7,706 messages   

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   Message 6,052 of 7,706   
   ArameFarpado to All   
   Re: about hFE multimeter test...   
   19 Apr 08 20:34:03   
   
   From: a-farpado.spam@netcabo.pt   
      
   Em Sábado, 19 de Abril de 2008 20:18, Brian Gregory [UK] escreveu:   
      
   > "ArameFarpado"  wrote in message   
   > news:fubam8$caq$1@news.datemas.de...   
   >> Hi all...   
   >>   
   >> a transistor "BD435" is giving me 440 in hFE test on the multimeter, when   
   >> the tecnical data i've found tell me min=40 max=475...   
   >>   
   >> does this mean the transistor is really in good shape?   
   >   
   > Probably.   
   >   
   >> can it be busted and still give a good hFE test result on the multimeter?   
   >   
   > It depends how good the multimeter's Hfe function is.   
   Agreed   
      
   > Check that if you disconnect B and connect only C and E the meter shows   
   > either a low number (ideally 0 or no more than 1 or 2) or an error of some   
   > kind.   
   >   
   connecting just E and C in the socket, it reads the same value for hFE.   
   so, it got me thinking that hFE measure is not a transistor test for   
   working/burned transistor...   
      
   do you use hFE measure to see if a transistor is busted?   
      
   thanks   
   ArameFarpado   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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