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).
List of approximate alternating voltages from a transformer and their applications in various testing procedures.
| Identifier | ExFiles\Box 32\4\ Scan050 | |
| Date | 12th September 1924 | |
| X1581 12.9.24. X.1531 - TRANSFORMER. APPROX. ALTERNATING VOLTAGES ACTUALLY USED ON VARIOUS OCCASIONS. Voltages. Circumstances 2 } 4 } Used for obtaining the impedance of the 6 } primary windings of ignition coils. 30 } 50 } 80 } Used on condenser temperature tests for 100 } capacities ranging from below standard 200 } to about 2.5 amps. 200 For insulation testing, ignition coils, etc. 400 For breakdown tests of condensers. (At present carried out in Mr. Brock's Dept.) 1,000 For ignition coil primary winding testing. CAP. | ||