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).
Specification sheet detailing the electrical characteristics of a condenser and transformer/coil system.
| Identifier | ExFiles\Box 69\1\ scan0004 | |
| Date | 14th February 1924 guessed | |
| -4- CONDENSER. Capacity (microfarads) K .30 PRIMARY & CONDENSER. Period of oscillatory current (secs) T = 2π√(LK{L. King}) .00162 Radio wave length (metres) vT 486000. PRIMARY, CONDENSER & BALLAST Decrement of oscillatory current πR√(K/L) 5.79 Damping factor. Ratio working time constant / period t₁/T Maximum voltage c'√(L/K) SECONDARY. Number of turns. n' 18,000 Dia. of wire (inches) .004" Approx. resistance (ohms) R' 4470 " inductance (henries) L' 35.0 " time constant (sec) L'/R' .00784 Maximum voltage MC'√(LK{L. King}) PRIMARY & SECONDARY. Step up ratio n'/n 60.0 Coefficient of coupling assumed η' (η = η'² .) Mutual inductance. M = η'√(LL') LL' - M² Contd. | ||