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).
Specification for resistance wire for a half charge scheme.
| Identifier | ExFiles\Box 163\6\ img044 | |
| Date | 22th May 1930 | |
| Ry. from EFC. c. By/RD. X6016. EFC6/AD22.5.30. X.6016. RESISTANCE FOR HALF CHARGE SCHEME. In reply to your query, the specification of the resistance wire for the half charge scheme which should be adopted is 2'1" i.e. 25" of 26 SWG. Eureka wire. This does not allow for any connections and has a resistance of about 1.8 ohms. The reduction in output is about one third the peak value on the reduced curve, being about two thirds of the full output peak value. EFC. | ||