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).
Description of the construction of a coil with an inside secondary and outside primary winding.
| Identifier | ExFiles\Box 54\4\ Scan069 | |
| Date | 1st January 1931 guessed | |
| -2- Contd. current. The construction of the coil with the inside secondary and outside primary is such that the circuit is largely closed by the magnetic casing into which the coil is finally sealed; this being at low potential it appears that the two gaps between the core and this magnetic casing are sufficient only for due insulation against the H.T. of the core. EFC. {E. Fowler Clarke - Electrical Engineer} | ||