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 94
Fig. Sectional View of ModernTransmitter. … Fig. 81 Essential Elements of Subscribers Telephone Connections. condenser and out again, first charging the condenser plates in onedirection, then in the other. By making the capacity of this con-denser sufficiently large, this alternating current is made strong enoughto pull the armature a first…
Electrical engineering
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