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).
Technical note on ensuring operating voltage remains higher than the E.M.F. of a battery.
| Identifier | WestWitteringFiles\F\May1921\ Scan51 | |
| Date | 18th May 1921 | |
| Contd. -2- EFC4/T18.5.21. to ensure that such operating voltage shall always be higher than the E.M.F. of the battery, and that even with this adjustment, the reverse series current to cause deoperation will not be unduly large. EFC, | ||