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Subject: Re: Transformers

Date: 04/12/01 at 7:32 AM
Posted by: M.ChandraSekaran
E-mail: jayseeyes@hotmail.com
Message Posted:

In Reply to: Transformers posted by JOE KEOGH on 09/26/00 at 9:28 AM:


I am a Toroidal transformer design engineer and a freelance consultant (in India). I happened to see your questions while browsing.

I will suggest you first find the 'continuty' of the windings. I mean to say that you find the ends of the coils using a ohm meter/multimeter. Write down the resistances for each windings. This will give you an Idea of the primary and secondary windings. Higher resistance means that winding is on the higher voltage side.
Apply a small voltage to this coil(using a frequency/waveform) generator and find the other coil voltages. If possible try to measure volt/turn. This will give you idea of the turns ratios.
If you can e-mail me the sizes(OD and HT) I can give you and Idea of their VAs.

Better Luck!

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