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

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   Message 51,551 of 52,877   
   Phil Allison to All   
   Re: Isolating bench test equipment   
   21 Sep 11 17:25:41   
   
   1df27ab9   
   From: phil_a@tpg.com.au   
      
   "Nutcase Turd."   
   , "Phil Allison" :   
   > "Trailboss"   
      
   > >I am setting up my test bench.   
   >   
   > > I have a variac with an iron vane ammeter and volt meter to serve the   
   > > DUT.   
   > > (usually tube amp). some older live chassis stuff too.   
   >   
   > ** Live chassis tube amps or something else like TV sets ?   
   >   
   > > My question is how to deal with my other mains powered test equipment,   
   > > these include:   
   >   
   > > HP sine generator   
   > > Distortion analyzer   
   > > VTVM   
   > > Old tube Tek scopes   
   > > Newer Philips scope   
   >   
   > > If these units are all converted to three wire polarized plugs should   
   > > just   
   > > the scope sit on an Isolation transformer?   
   >   
   > ** Never earth isolate ( ie float) your scope, that is very dangerous.   
      
   Hardly.   
      
   ** It is -  you fucking nut case.   
      
      
   > No need exists for an isolation tranny, with the exception of servicing   
   > modern SMPSs and a few TV sets.   
      
   Servicing live chassis radios   
      
      
   ** Same risks as live chassis TV sets.   
      
       Piss off you retarded jerk.   
      
      
      
   ...  Phil   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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