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).
Wiring diagram for the connections of an Auto-Charge Control Switch for units A & B.
| Identifier | ExFiles\Box 59\1\ Scan267 | |
| Date | 9th February 1928 | |
| To EARTH RESISTANCE SHUNT FROM DIS: BOX TERMINAL C To DYNAMO TERMINAL C CONNECTIONS OF AUTO-CHARGE CONTROL SWITCH UNITS A & B NOTE. WINDING DIRECTIONS SHOWN ARE THOSE OF A & THOSE APPROVED FOR STANDARD. B IS OF OPPOSITE WINDING DIRECTION. [Handwritten]: X4575 [Stamp]: ROLLS-ROYCE, LIMITED... 9 FEB 1928 DERBY | ||