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).
List of effects to be considered for battery ignition systems.
| Identifier | ExFiles\Box 37\1\ scan 131 | |
| Date | 17th January 1922 | |
| X. 3199 17.1.22 BATTERY IGNITION SYSTEMS. EFFECTS TO BE CONSIDERED. (1) Eddy current loss in primary circuit. (2) Capacity in secondary circuit. (3) Leak across secondary circuit. | ||