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Re: [TCML] VTTC MOT question

> On March 18, 2018 at 12:20 PM Steve White <steve.white1@xxxxxxxxx> wrote:

> I wonder if the problem with my VTTC is the variac? My variac is the Superior Electric model 116C. >This variac is rated at 10 amps but can be overloaded if the duty cycle is sufficient to allow >cooling. Currently I am seeing maximum current pulses of about 15 amps at 140 volts at an i>nterrupter period where I get my longest sparks. I am using this variac because it is small enough >to fit into the chassis of my VTTC to make a portable unit. I have bigger variacs but one of those >ould have to located outside of the main chassis thus decreasing portability. From the information >that I see in the Powerstat data sheets, this variac should be able to supply several times its >rated current if the duty cycle is sufficiently low so I don't think that this is the problem.

  I leave to others more knowledgeable to comment on the symptom match. choosing
  a component for mechanical fit, rather than ratigs can be iffy.  jf done, one
  might be sure of cooling holes, a fan, room permitting/

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