| Year | 1949 |
| Date | 23-Jun |
| Volume | 100 |
| Issue | 2,509 |
| Page | 776 |
| Category | Electrical |
| Part | |
| Title | The Design and Construction of Small Power Transformers |
| Author | A.R.Turpin |
| Notes | Showing the dimensions required for calculating a design, how dimensions of bobbin are fixed, construction, method of winding a bobbin in the lathe |