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Subject: Re: Transformers

Date: 09/28/00 at 9:25 PM
Posted by: John Dunn - Consultant
E-mail: ambertec@ieee.org
Message Posted:

In Reply to: Re: Transformers posted by JOE on 09/28/00 at 9:07 AM:

Hi, Joe.

I think I have not gotten across, the idea I had in mind.

I wasn't referring to a measurement of any load current, I was referring to that current which will be drawn by the energized winding when a test voltage is applied to it. That current is called the "magnetization current". The magnetization current will start to climb very rapidly when the applied excitation voltage gets large enough. That climb will be the result of core saturation. The winding's voltage rating will be some percentage lower than the voltage which induced the core saturation.

As to using a size comparison to catalog items, my guess is that most manufacturers will be constrained by the same laws of physics and magnetics. Whatever power level one manufacturer was able to get from two pounds worth of transformer, the other manufacturers will too.

Good luck.

John Dunn - President
Ambertec, Inc.
ambertec@ieee.org


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