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).
From The Telegraph Condenser Co. Ltd. detailing variations and sizes for Paper Dielectric Condensers.
| Identifier | ExFiles\Box 63\3\ scan0334 | |
| Date | 16th April 1935 | |
| 43 THE TELEGRAPH CONDENSER Co., LTD. SHEET No. 1 DATE 16th April 1935 Messrs. Rolls-Royce Ltd. Paper Dielectric Condensers. To your drawing E.L.123 the following variations are possible:- 0.25 mfd 250 volt peak working, 0.15 " 500. " " 0.09 " 1000 " " For 1000 volt Peak working Capacity Size required 0.5 mfd 4 3/4" long x 1" diameter 2.0 mfd 4 3/4" " x 2 1/8" " [Signature] | ||