Lessons in practical electricity; principles, experiments, and arithmetical problems; over four hundred illustrations; an elementary text book (1909)
Swoope, C. Walton (Coates Walton), d. 1901 · New York, D. Van Nostrand company · leaf 338
resistance only the formercurrent is able to pass, and the secondary discharge becomespractically an intermittent currentof high voltage in one directiononly. In medical induction coils where no condenser is usedthe secondary charges are practically equal. The voltage generally applied to the… … 320 PRACTIi AL lSLEt TRft IT): pendent vibrators are used with modern high class coils whichcan be connected directly to an electric light circuit of 110volts or more. The vibrator is practically a relay, ■ 313,which makes and breaks the current in the independent pri-mary circuit by means of…
Electricity · Magnetism
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