| Year | 1939 |
| Date | 08-Jun |
| Volume | 80 |
| Issue | 1,987 |
| Page | 681 |
| Category | Electrical |
| Part | |
| Title | Alternators |
| Author | H.Chapman-Pincher |
| Notes | Generation of alternating current. Diagrammatic representation of an alternating current generator, rotation of a single coil, graph of single-coil two-pole and four-pole alternators, two-phase alternator, graph of two- and three-phase systems |