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 with annotations and explanatory text regarding the circuit's fuse functionality.
| Identifier | WestWitteringFiles\D\February1920\ Scan8 | |
| Date | 3rd February 1920 guessed | |
| Contd. -7- Ck{Mr Clark}1/T3.2.20. as indicated in diagram - [Handwritten note next to component H]: cut out [Diagram annotations]: A, Fuse, H, C, c, +, -, 7 [Handwritten note pointing to a switch]: positive This switch must be considered omitted to correspond with the Lucas car system under present consideration. The combined short circuit current of the main negative and control circuits will be available to blow this fuse if the cutout sticks on, and in normal running, this fuse has considerably less current, viz. that of the main positive brush (see table), to carry, than has the control circuit. Contd. | ||