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).
Graph plotting three performance curves (A, B, C) for a U.I. Valve, with associated circuit diagrams for testing at 189 Volts AC.
| Identifier | ExFiles\Box 41\2\ Scan052 | |
| Date | 14th January 1927 | |
| U.I. VALVE WITH 189 VOLTS A.C. Circuit I Labels: 189V, 50~ Circuit II Labels: 189V, 50~ Left Text Block: Curve A taken Curve B taken Value of C Curve C received Right Text Block: Circuit I Circuit II Current about 30 mA New results Rattle Rises Graph Labels: A, B, C X-Axis Labels: 150, V.D-75 Edge Print: Drawing Office Supplies Ltd. | ||