[AMPS] Question About Correct Phase for 240V Transformer Primary Windings ???

[Hank Phillips]

You might also consider adding some series resistance to the AC source, 
since low voltage output transformers could supply a bit too much current 
in the some configurations.

73,

Hank
AA4HP

At 02:51 PM 8/18/00 -0400, you wrote:

> > Hi Fellas, A question for you High Voltage Transformer Guru's. I have an
> > unlabeled transformer. I have found the primary windings. This transformer
> > can be powered by 120 or 240 volts. Heres the question. How can you tell
> > the phase of the windings in order to properly set up for 240 operation.
> > I'm not sure if this will help determine it but the pig tails of the
> > windings are Brown/Black and the other is Blue/Yellow. As always any help
> > would be greatly appreciated...  Thanks, Kurt, K3KL...
>
>Run it at real low voltage (like 5 volts or less), and measure the
>voltage on the secondary(s). You can be sure the phase is right,
>and check the turns ratio that way.
>
>
>73, Tom W8JI
>w8ji@contesting.com
>
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