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).
Letter from The Zenith Electric Company Limited regarding the supply and design of resistances.
| Identifier | ExFiles\Box 163\6\ img300 | |
| Date | 15th January 1936 guessed | |
| Continuation - cause not coming to an expression below 12,000 to 14,000 cycles per second. We can supply these units at 10/6d. each nett. Should, in your opinion, these resistances be unsuitable for your purpose, we will be pleased to consider a special design if you will be good enough to advise us of the maximum inductance which you can tolerate, and also, the longest duration of the full-load current and the frequency with which it is repeated. We regret that the type "Y.10" resistance which we supplied cannot be converted to your present requirements which need an entirely different construction. Yours faithfully, THE ZENITH ELECTRIC COMPANY LIMITED. | ||