home bbs files messages ]

Forums before death by AOL, social media and spammers... "We can't have nice things"

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

[   << oldest   |   < older   |   list   |   newer >   |   newest >>   ]

   Message 51,548 of 52,877   
   Trailboss to All   
   Isolating bench test equipment   
   20 Sep 11 13:50:05   
   
   From: sfjssa@nospam.com   
      
   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.   
      
   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?   
      
   Should the device under test chassis ground bypass the variac and go   
   directly to the mains outlet?   
      
   All this equipment will be connected to the same ckt on the service panel   
   providing a single point of ground.   
      
   The service panel has been overhauled, neutral/ground bus renewed and a new   
   earth rod installed down into the water table, (I live on a barrier beach   
   and hit water at about six feet).   
      
   any help appreciated,   
      
   JVC   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

[   << oldest   |   < older   |   list   |   newer >   |   newest >>   ]


(c) 1994,  bbs@darkrealms.ca