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).
Instructions on the operation and testing of a Westinghouse 'Spark-C' Tester.
| Identifier | WestWitteringFiles\I\October1922\ Scan74 | |
| Date | 20th October 1922 | |
| RR 238 (300 Bks.) (SF 152. 6-11-18.) MP 197880 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: EFC Order No: AB.58. Customer's No.: 1 20 Oct. 1922 X4548. Westinghouse "Spark-C" Tester. This instrument has been tested on bench spark-gaps, using an R Bosch magneto, and its operation appears to be as follows. As the brilliancy of the glow in the tube depends on the current passing, & as the latter is merely a capacity displacement, the brilliancy will depend on the voltage applied and the frequency with which it oscillates. These displacements occur in the space surrounding any apparatus generating spark discharges, so that the tube glows when brought any-where near to it. Working on a spark-gap, by direct connection with the H.T. Electrode (Cont'd) Signed This Sheet must be filed on completion of the work. | ||