Re: Variac setting (Was Rd: Rotaty popping)

• To: tesla-at-pupman-dot-com
• Subject: Re: Variac setting (Was Rd: Rotaty popping)
• From: Esondrmn-at-aol-dot-com (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Wed, 03 May 2000 12:32:55 -0600
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

In a message dated 5/1/00 8:11:27 AM Pacific Daylight Time, tesla-at-pupman-dot-com 
writes:

<<  I measured my ballast variac last night.  It is made by Luxtrol, says 
 > Light 
 > >  Control on it, max 41.6 amps (says to fuse it at 50 amps).  It also
 says 
 > >  taper wound - which is odd, I don't see any taper to the core or the 
 > >  windings.  It is however very non-linear.  The maximum inductance is
 54 
 > mh.  
 
 Are you sure that isn't "tape wound"?  Referring to how the core is made,
 from a long strip wound into a toroid.
 
  >>
Well, I checked my ballast variac again last night.  It clearly says "Taper 
Wound", which must refer to the non-linear inductance of the variac.  Must be 
because of it's designed use as a light control.

Ed Sonderman

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