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).
Request to obtain a non-inductive resistance unit for aero ignition coil shunt resistance tests.
| Identifier | ExFiles\Box 163\6\ img297 | |
| Date | 22th November 1935 | |
| 86016 EJJ. From Hs{Lord Ernest Hives - Chair}/Wst. Hs{Lord Ernest Hives - Chair}/Wst.10/MA.22.11.35. AERO IGNITION COIL SHUNT RESISTANCE TESTS. Will you please obtain for us from Messrs. Standard Telephones & Cables Ltd., one non-inductive resistance unit 200,000 ohms (plus 50 ohms permissible tolerance) capable of carrying for short periods 25 milliamperes. Hs{Lord Ernest Hives - Chair}/Wst. | ||