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).
Circuit diagram for a high-voltage testing apparatus using a valve rectifier.
| Identifier | ExFiles\Box 39\3\ Scan263 | |
| Date | 16th September 1926 guessed | |
| ~, SUPPLY, 200 VOLTS, or, 100 VOLTS, Primary, H.T. Secondary, ± 10000, ± 5000, ± 2500, 0, ±2400, alt. volts, max. 3400., Valve Rectifier., Milliammeter., Plate under test. | ||