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).
Report discussing optimum electrical resistance and its effect on sparking and voltage in a non-inductive circuit.
| Identifier | ExFiles\Box 149\3\ scan0028 | |
| Date | 21th February 1939 guessed | |
| - 2 - the optimum value for this resistance, which seems rather low, though there was no sparking at the points and in practice there is no burning, probably because the current in this circuit in non-inductive and the voltage does not rise. The small voltage rise at the point of make shewn in voltage curve without the resistance is due to the single contact which must overrun and this is not evident when two contacts are used. We hope it will be possible to do further investigation in the near future. Yours faithfully, for ROLLS-ROYCE LIMITED. | ||