Hawkins electrical guide. Questions, answers & illustrations; a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833- · New York, T. Audel · leaf 58
on; 3. Fall of potential method; 4. Differential galvanometer method; TESTING AND TESTING APPARATUS 477 5. Drop method; 6. Voltmeter method; 7. Wheatstone bridge method. Direct Deflection Method.—This method is based on thefact that the greater the current through a galvanometer thegreater the… … Fig. 551.—Charge and discharge key, adaptedto condenser testing where the condenser isto be alternately charged and discharged.The insulated handle enables the key to beused without insulating the body.
Electrical engineering
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