Re: Homebrew variac paralleling choke

• To: tesla-at-pupman-dot-com
• Subject: Re: Homebrew variac paralleling choke
• From: "Bunnykiller" <bigfoo39-at-telocity-dot-com> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Sat, 25 Mar 2000 13:16:43 -0700
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

SNIPPERZZZ...

> 
> I need to parallel two variacs (two 10A are available, and I need 20A).  I
> was planning on winding my own paralleling choke with some 14-AWG wire, but
> I don't have a EI core "laying" around.  How many problems would I create
> for myself if I just used a solid bar of steel of suitable size (say a 1.5"
> diameter solid bar)?  I realize this is less than ideal, but it's my only
> real option at this point (unless I can run a 15/120 system on a single 10A
> variac...).
> 
> Mark B



Hi Mark ...


 a word of warning   DO NOT  run 15KV/120mA on a 10 A variac   you will
fry the windings on the variac in a new york second...  

as far as the solid bar...  it may work but i believe it would more
likely to be a problem maker than a problem solver. some good
applications that use healthy sized EI cores are big battery chargers (
car batteries ), Computer back up systems, or low volt high amp power
supplies...  

call a few scrap yards or better yet go visit them and look around if
thier policy permits it...


Scot D

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