| Year | 1995 |
| Date | 20-Jan |
| Volume | 174 |
| Issue | 3,985 |
| Page | 98 |
| Category | Electrical |
| Part | 4 |
| Title | Understanding Electric Generators |
| Author | Dave Lammas (The late) |
| Notes | Explains armature turns, discusses various ferro-magnetic materials. Commutator, magnetic materials |