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   rec.audio.tubes      Tube-based amplifiers... that go to 11      52,877 messages   

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   Message 51,368 of 52,877   
   Phil Allison to All   
   Re: Choosing a fuse   
   04 Jun 11 10:04:18   
   
   From: phil_a@tpg.com.au   
      
   "Big Bad Bob"   
   >   
   > OK I ran the experiment myself.  Test circuit used 120VAC to 24VCT   
   > transformer (rated at 2A) with 10 ohm resistor in series with the primary.   
      
   ** Change that resistor to 1 ohm and try again.   
      
   Cos you went and put a resistor in series with the primary of similar value   
   to the primary's own resistance - which has the effect of dramatically   
   reducing the peak current of a worst case surge.   
      
   Folk regularly use NTC thermistors for that exact purpose  !!!!!   
      
   Then try more transformers - particularly those of a few hundred VA and   
   toroidal types.   
      
   You will need a resistor about 0.1 to 0.5 ohms with plenty of power rating.   
      
   Fuckhead.   
      
      
   ....  Phil   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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