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Title: Pretty Cool Score... Post by: N8ETQ on November 14, 2015, 10:45:49 AM A friend of mine procured a few of these via an auction. More consistent test results for both the unit under test and my stable of antique test gear! /Dan Title: Re: Pretty Cool Score... Post by: Opcom on November 14, 2015, 10:04:38 PM Those are perfect. The only thing better is possibly a GE Inductrol (no power-carrying moving contacts), if you can find one.
Title: Re: Pretty Cool Score... Post by: N8ETQ on November 15, 2015, 06:54:10 AM Thanks Patrick, This thing seems to do the same. The Variac is unique in that he has a "Center Tap" and just controls buck/boost to one side of the XFMR. All the load "I" is going through the other side. Here is a functional schematic. The Manual is here: http://www.ietlabs.com/pdf/Manuals/GR/1571A-%201582A%20Automatic%20Voltage%20Regulator%20Instruction%20Manual%20Complete.pdf I just have to find a place under my bench for him and get it all plumbed in. 73 /Dan |