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 279
Fig. 18. Gould Portable Storage Battery. 247 40 blXJKA(jll. KATIEKIKS Portable batteries, for example, … sauadmj^ are used for feeding small motors,lamps, etc., for medical or dentalpurposes, in which cases theirweight is not a serious difficulty,in view of the importance of thework and the small amount ofenergy required. Another specialfield for very small batteries isthe theatrical application,…
Electrical engineering
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