be thrown out of step at a critical moment, and stop. Thestarting difficulty is not insuperable; it may be overcome eitherby a hand-wheel, or by running the machine up to speed as adirect current motor with current supplied to the commutator fromaccumulators, which are cut off again when the motor… … Fig. 38.—Wrights Rectifying Interrupter (Newton and Co.) to be rectified may be adjusted to suit the particular case. Thus,for charging a few accumulator cells a current of 1 ampere at100 volts could be changed to one of 5 amperes at 20 volts beforerectification, with advantages from the point of…
X-rays · Radiography
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