A Compensated-control Lighting Outfit.
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IN our issue dated July 5th we dealt at some length with the C.A.V. compensated-voltage control system perfected by C. A. Vanderveil and Co., Ltd., Acton, London, W.3, and installed by a great many of the important omnibus groups throughout the country. This system having proved so successful, the company has just placed upon the market a further outfit suitable for a lamp load not exceeding eight amps.
The dynamo employed is very compact and the regulator is embodied with it. It can be supplied with a switchboard suitable for three or five-lamp equipments and fulfils the W.D. specification No. 23A for electric-lighting equipment on mechanical vehicles. Consequently, it has been accepted for those vehicles joining under the subsidy scheme.
The system is of great value as it provides a means whereby the battery receives a charge corresponding to its condition. Thus when the battery is fully charged the current diminishes to one or two amps., so that the battery cannot be overcharged, which results in gassing and rapid deterioration—a fault particularly general in summer-time, when there is not such a large call upon the battery. By means of this system the entire lamp load is automatically and immediately supplied by the dynamo and this can be run with perfect safety, even if the battery becomes disconnected. In fact, were it not that the battery is essential to supply the lights when the vehicle is standing with the engine not running, the dynamo could very well supply the current direct. It does not matter how much or how often the lamp load is varied within the maximum