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).
Electrical specifications and test results for a Liberty Regulator.
| Identifier | ExFiles\Box 31\1\ Scan057 | |
| Date | 9th June 1920 | |
| X 1402 EFC3/T9.6.20. X.3795 - LIBERTY REGULATOR. X.1402. A current of .2 amperes at 8 volts will cause the contacts to be held apart. The application of 9 volts will draw the armature right down. The coil resistance is 40 ohms. The regulating resistance takes .25 amp. at 8 volts and is therefore 32 ohms. | ||