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).
Graph of open circuit volt curves for a Smith (T&M) Type A Dynamo.
| Identifier | WestWitteringFiles\C\August1919\ Scan49 | |
| Date | 6th June 1919 | |
| SMITH (T&M) TYPE A DYNAMO Open circuit volt curves Self Excitation (a) As plain shunt machine (c) Controlled VOLTAGE (CURVES A) VOLTAGE (CURVES B) DYNAMO SPEED (R.P.M.) A B (a) (c) 13.5 volts 520 RPM 570 R.P.M. E7.C 6/6/19 | ||