| Year | 1921 |
| Date | 24-Nov |
| Volume | 45 |
| Issue | 1,074 |
| Page | 440 |
| Category | Electrical |
| Part | 2 |
| 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 Aluminium Electrolytic Rectifier. Four-cell connections for full wave aluminium rectifier, full wave rectifier |