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).
Requesting to see new vacuum valve specimens from the US for potential use in car lighting dynamo systems.
| Identifier | ExFiles\Box 41\2\ Scan003 | |
| Date | 18th September 1919 | |
| H H 235 B 1200 T? (S F.{Mr Friese} 673. 22-5-19) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2576 X. 3646 To E.P. from E.F.C. EFC3/T18.9.19. X.3646 X3374 RE VACUUM VALVES We understand that you brought back with you from the States, some specimens of the new vacuum valves (rectifiers, oscillators, or amplifiers). As we are very interested in these, we should like to have an opportunity of seeing these, if suitable to you. It may be that some day we shall use these in connection with car lighting sets to limit the out-put of the dynamo running at an over-speed. E.F.C EFC | ||