Transformer question (only slightly OT)

[9000 VAX]

Obviously paralleling gives you lower primary winding resistance thus
lower lose/heating.

vax, 9000

On 9/1/06, Chuck Guzis <cclist at sydex.com> wrote:
> I have a power transformer that I scavenged out of a 15-year old UPS, so
> it's probably pretty close to being on-topic.
>
> At any rate, I want to use this transformer in a DC power supply.  I have
> three sets of windings:  two sets are 120/240v "universal" series/parallel
> type and the third is 24-0-24v center-tapped.
>
> I want to run this from 120vac.
>
> Is there any benefit to paralleling the two sets of 120/240v main windings
> (i.e. 4 120v windings in parallel)?  Will it increase the power rating of
> the unit or is that mostly a function of the secondary winding?
>
> Suppose instead of 24-0-24 on the secondary, I'd like 12-0-12.  Obviously,
> one way to get this is to hook the primary (-ies) up as 240v.  Is there any
> benefit to be gained in parallelling the two 240v primaries?
>
> Thanks,
> Chuck
>
>
>
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