Air core transformers

Introduction Another kind of special transformer, seen often in radio-frequency circuits, is the air core transformer.True to its name, an air core transformer has its windings wrapped around a nonmagnetic form, usually a hollow tube of some material. The degree of coupling (mutual inductance) between windings in such a transformer is many times less than …

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8 Transformer parameters

Introduction Transformers can vary, from a miniature high-frequency audio transformer to a large power transformer, the operating parameters are still the same. These can be divided into eight groups and are posted on the nameplate of any transformer of significant size: VA rating, cooling, transformer rating, frequency, voltage, phase, connections, and taps. 1.VA Rating Every …

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Introduction to Electrical Power Transformer

Definition of Transformer A transformer is a static machine used for transforming power from one circuit to another without changing frequency. This is a very basic definition of Power Transformer. Since there is no rotating or moving part so transformer is a static device. Transformer operates on ac supply. Transformer works on the principle of mutual induction. History …

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