The use of rectifier valves for wireless apparatus on trans-Atlantic flight machines and for battery charging.
| Identifier | ExFiles\Box 41\2\ Scan004 | |
| Date | 20th September 1919 | |
| E.F.C. EP {G. Eric Platford - Chief Quality Engineer} 9/F20.9.19. X.3646 with reference to your EFC {E. Fowler Clarke - Electrical Engineer} 3/T18.9.19, I have not any rectifier valves, but I know that these were used successfully by the wireless people who were dealing with the wireless apparatus on the trans-Atlantic flight machines. A rectifier was also used successfully for charging batteries off an A.C. current. EP. {G. Eric Platford - Chief Quality Engineer} | ||
From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).