Principles and practice of electrical engineering (1914)
Gray, Alexander, 1882-1921 · New York [etc.] McGraw-Hill Book Company, inc. · leaf 231
iMGr (!) … End view. Section through cylinder. Fig. 229.—Make and break method of gas ignition. When the contact at x is closed, current flows in the directionof the arrow. When the cam c has reached a predeterminedposition, the spring s opens the contact x and the current is main-tained across the gap by the…
Electrical engineering
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