| Year | 1917 |
| Date | 29-Nov |
| Volume | 37 |
| Issue | 866 |
| Page | 334 |
| Category | Electrical |
| Part | |
| Title | A Working Rectifier for Alternating Currents |
| Author | E.Fowler Clark |
| Notes | Plan, the insulating plate, the starting-up gear, the rectifier connected up for working, oscillograms of the rectified current |