be one-half of 1 drives a commutator and the power for operating per cent low. It is easily possible for carbon brushes with the indicator is furnished by a battery. In the de- low-contact pressure on a silver commutator to develop sign due to Lavet-Berly and Favre-Bulle (reference 3) a resistance… … Figure 42.—Commutator-condenser type air-speed meter. The reel is shown in the upper left, the indicator at the upper right, and the suspended head in the lower part of the figure phase. This current drives a synchronous motor in deposit across the insulation short-circuiting the com- the indicator…
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