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).
Data table listing conditions, position of tappings, total number of turns, and equivalent nominal voltage.
Identifier | ExFiles\Box 32\4\ Scan053 | |
Date | 27th September 1924 guessed | |
-2- Condition. | Position of tappings (Expressed in No. of turns). | Total No. of turns. | Equivalent nominal voltage 33. | 40,5,10,80. | 135 | 108 34. | 20,40,5,10,80. | 135 | 124 35. | 10,20,40,5,10,80. | 165 | 132 36. | 5,10,20,40,5,10,80. | 170 | 136 37. | 2,5,10,20,40,5,10,80. | 172 | 137.6 38. | 1,2,5,10,20,40,5,10,80. | 173 | 138.4 39. | 2,1,2,5,10,20,40,5,10,80. | 175 | 140 40. | 80,160. | 240 | 192 41. | 10,80,160. | 250 | 200 42. | 5,10,80,160. | 255 | 204 43. | 40,5,10,80,160. | 295 | 236 44. | 20,40,5,10,80,160. | 315 | 252 45. | 10,20,40,5,10,80,160. | 325 | 260 46. | 5,10,20,40,5,10,80,160. | 330 | 264 47. | 2,5,10,20,40,5,10,80,160. | 332 | 265.6 48. | 1,2,5,10,20,40,5,10,80,160. | 333 | 266.4 49. | 2,1,2,5,10,20,40,5,10,80,160. | 335 | 268. EFC/HEW. | ||