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).
The testing and return of three out of four Dubilier condensers, one of which failed during a high-voltage resonance test.
| Identifier | ExFiles\Box 34\1\ Scan257 | |
| Date | 14th July 1921 | |
| X. 2512 To Wd{Mr Wood/Mr Whitehead}/GHB. from EFC. EFC4/T4.7.21. ________________________________________________________ X. 2512 - DUBILIER CONDENSERS OF EXCESS 6 CAPACITY. We are now returning 3 of the 4 Dubilier condensers handed to us under cover of your Wd{Mr Wood/Mr Whitehead}/GHB1/W25621. The capacities of these condensers are not so much above the figure suggested for the top limit as to render these unsatisfactory. Therefore, we agree that the condensers may be used on production. Owing, however, to these condensers of high capacity affording us an opportunity of making a certain test in connection with resonance, we have, in carrying out this test satisfactorily, broken down one of the condensers and are therefore only returning three. It is not to be thought from this that this particular condenser is [handwritten 'was' inserted above] unsatisfactory, as the voltage put upon it during our resonance test was relatively very high. EFC. | ||