A Robot for Testing Magnetos
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rIE old method of testing. electrical equipment by the use of separate instruments, and
temporary " hook-ups," is steadily giving place to machines specifically designed for the purpose. One such outfit, the work of the City. Electrical Co., Ltd., Emerald Street, London, W.C.1, is shown in the accompanying illustration. The instrument :lovers magnetos and is obviously intended for installation in premises where the number of pieces of equipment likely to need testing is sufficient to justify the outlay. , The unit provides a driving motor suitable for direct coupliag to any type of instrument, the • motor and control gear being designed to provide a stable and infinitely variable speed range of from 5& r.p.m. to* 11,000 r.p.m. It can be built for three-phase, single-phase or d.c. supply.
Adjustable ball-type spark gaps are mounted above bench level, the high-tension leads being below and enclosed.
This concern is also responsible for equipment by which engine starters can be tested. Although designed essentially for handling area-engine starter motors, a suitably revised piece of equipment would, no doubt, prove of great value in the shops of road transport operators. Like the magneto testing. unit itis transportable and self-contained.