Core Gaps (fwd)

• To: tesla-at-pupman-dot-com
• Subject: Core Gaps (fwd)
• From: Tesla List <mod1-at-pupman-dot-com>
• Date: Tue, 31 Mar 1998 22:51:15 -0700 (MST)
• Approved: mod1-at-pupman-dot-com

---------- Forwarded message ----------
Date: Tue, 31 Mar 1998 20:04:48 +0000
From: "Gregory R. Hunter" <ghunter-at-mail.enterprise-dot-net>
To: Tesla List <tesla-at-pupman-dot-com>
Subject: Core Gaps

Coiler Types,

I've noticed that transformer cores with an air gap tend to have 
current limiting properties, whereas transformers with continuous, 
gapless cores have no ability to limit current.  (For example, cutting 
a gap in a variac core to make a current limiter of it)  How does that 
work?  Just curious.

Also, I've gotten ahold of a 120V/12 amp variac.  I took it out of its 
enclosure and studied it.  It's so simple, even a novice like me can grasp 
how it works.  Seems like it would be real easy to build a big, 
homebrew variac for 30-40 amp service.

Greg

UK

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