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Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)

American Technical Society · Chicago : American Technical Society · leaf 413

An illustration from Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc., 1916, leaf 413
The wiresand number of turns in the two sets of coils are so proportionedtliat the secondary coils produce a high current at low voltage, whenthe primary coils are energized by a low current at high voltage. Formost welding operations the voltage is from 3 to 5 volts, and thepower required will… … Fig. 99. Details of Spot WelderCourtesy of Toledo Electric Welder Comprnuj 370 WELDING 77

Electrical engineering

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