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Frequently Asked Questions

This section is for informational purposes only and should not be used as a design tool or to generate technical specifications. For further details, please contact CTI and discuss with a representative for clarification. Search for terms or questions by entering words or phrases in the text box and clicking Search, by selecting a category from the drop-down list and clicking Show. Then simply click on the linked term or question below.

Question: Transformer with 2 windings

Answer: A 2-winding transformer has the primary winding and secondary winding electrically insulated from each other. Therefore, all of the power flowing through the transformer is done by transformer action and not by partial conduction as explained under the auto transformer section. A brief description of how a 2-winding transformer operates is as follows: The electrical energy flows in through the primary windings and is converted to magnetic energy which is conducted by the lamination or iron in the center of the coil This magnetic energy is referred to as lines of force or flux, and varies according to the frequency of the supply. When these lines of force vary or move, they affect the winding of the secondary and, therefore, a voltage is generated in the secondary. This voltage may be larger or smaller or equal to the input of primary voltage, and is determined by the ratio of turns between primary and secondary. For example, the primary of a transformer has 100 turns and is connected to 100-volt supply, the secondary has 50 turns, therefore, the secondary voltage will be 50 volts.

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