File:Transformer min stray field geometry.svg
Summary
Cut view through transformer windings. White: insulator. Green spiral: <a href="https://en.wikipedia.org/wiki/electrical_steel" class="extiw" title="en:electrical steel">Grain oriented silicon steel</a>. Black: Primary winding made of <a href="https://en.wikipedia.org/wiki/oxygen-free_copper" class="extiw" title="en:oxygen-free copper">oxygen-free copper</a>. Red: Secondary winding. Top left: Toroidal transformer. Right: C-core, but E-core would be similar. The black windings are made of film. Top: Equally low capacity between all ends of both windings. Since most cores are (bad) conductors they also need insulation. Bottom: Lowest capacity for one end of the secondary winding needed for low power high voltage transformers. Bottom left: Reduction of <a href="https://en.wikipedia.org/wiki/leakage_inductance" class="extiw" title="en:leakage inductance">leakage inductance</a> would lead to increase of capacity.
Licensing
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 14:32, 8 January 2017 | | 1,949 × 1,772 (282 KB) | 127.0.0.1 (talk) | <p>Cut view through transformer windings. White: insulator. Green spiral: <a href="https://en.wikipedia.org/wiki/electrical_steel" class="extiw" title="en:electrical steel">Grain oriented silicon steel</a>. Black: Primary winding made of <a href="https://en.wikipedia.org/wiki/oxygen-free_copper" class="extiw" title="en:oxygen-free copper">oxygen-free copper</a>. Red: Secondary winding. Top left: Toroidal transformer. Right: C-core, but E-core would be similar. The black windings are made of film. Top: Equally low capacity between all ends of both windings. Since most cores are (bad) conductors they also need insulation. Bottom: Lowest capacity for one end of the secondary winding needed for low power high voltage transformers. Bottom left: Reduction of <a href="https://en.wikipedia.org/wiki/leakage_inductance" class="extiw" title="en:leakage inductance">leakage inductance</a> would lead to increase of capacity. </p> |
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