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).
Continued discussion on the operation and advantages of an automatic switch in the vehicle's electrical system.
| Identifier | ExFiles\Box 31\1\ Scan196 | |
| Date | 12th June 1926 | |
| EFCL/T12.6.26. -12- Contd. charging rate is reduced by the automatic switch, and if the load switched on is of sufficient magnitude, e.g. the head lamp load, the effect this will have on the electro-magnetic switch is such that the system properly connected to the battery can never have its voltage raised sufficiently to open the switch, so that the full rate is continuously provided so long as the head lamps are on circuit. On switching off the head lamps the voltage would proceed to rise and shortly afterwards the electro-magnetic switch would be opened and the charge reduced. But a further point is that should the battery by any chance become disconnected, the automatic switch immediately operates and prevents the voltage of the system from rising so unduly high as otherwise it would do, though of course it does not have the complete effect of preventing the voltage rising at all unduly, as is the case with a properly completely regulated system, such as previously described. It will be agreed that such a system, although not perfect, would, through this automatic action, present considerable advantages over the simple completely inherently controlled system, and it has the advantage over the completely externally regulated system of avoiding the possible inconsistent action. EFC. | ||