Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!uwvax!umn-d-ub!nic.MR.NET!ns!logajan
From: logajan@ns.network.com (John Logajan)
Newsgroups: sci.electronics
Subject: Re: Transformer Troubles
Message-ID: <1496@ns.network.com>
Date: 19 Jul 89 19:33:17 GMT
References: <536@winnie.fit.edu>
Sender: logajan@ns.network.com (John Logajan)
Distribution: sci.electronics
Organization: Network Systems Corp. Mpls MN
Lines: 22

In article <536@winnie.fit.edu>, acs60222@zach.fit.edu ( ENRIQUEZ) writes:
> I began to think about putting another, smaller
> transformer is parallel with the other to increse the driving current.

Multiple parallel transformers do work (as long as you get all the
polarities correct!)  In fact, internal to many transformers are parallel
windings tied together to get just that effect.  They thus gain the 
advantage of using smaller guage wire, but end up with higher current
carrying capability.

There are two sources of "resistance" to high current capability of
transformers -- the winding wire guage and the core cross-sectional
area.  Usually xformers optimize both, so that you can't increase one
without needing to increase the other.

In any event, multiple xformers in parallel do both jobs, increase
the wire guage (by parallelism) and increase the core cross-sectional
area (also by parallelism.)

-- 
- John M. Logajan @ Network Systems; 7600 Boone Ave; Brooklyn Park, MN 55428  -
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