| Year | 1921 |
| Date | 15-Dec |
| Volume | 45 |
| Issue | 1,077 |
| Page | 527 |
| Category | Electrical |
| Part | 5 |
| Title | Rectifying Devices |
| Author | E.T.Painton |
| Notes | A Practical Article describing the Construction and Operation of Devices for Transforming Alternating Currents into Direct Currents. The Mercury Arc Rectifier. Single-phase rectifier bulb by Westinghouse Cooper Hewitt Co., general arrangement, adjustable leak transformer, automatic starting, portable mercury arc rectifier by General Electric Co. |