| Year | 1915 |
| Date | 09-Sep |
| Volume | 33 |
| Issue | 750 |
| Page | 224 |
| Category | Electrical |
| Part | |
| Title | The Design and Construction of Small Transformers |
| Author | A.E.Brewerton |
| Notes | Diagram of simple transformer, different types, general arrangement of 500-watt transformer, single coil transformer with cover |